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25C - AGMT - OCWD CENTENNIAL PARK
0111 IT LOTL 041 M1 0 CITY COUNCIL MEETING DATEd JUNE 21, 2016 TITLE: CLERK OF COUNCIL USE ONLY: FTIW4 ;e71cp LICENSE AGREEMENT WITH ORANGE ❑ As Recommended COUNTY WATER DISTRICT FOR ❑ Or Amended ❑ Ordinance on 1 ®t Reading INSTALLATION OF WATER INJECTION ❑ Ordinance on 2 "a Reading WELLS AT CENTENNIAL PARK ❑ Implementing Resolution {STRATEGIC PLAN NO. 5, 1A} ❑ set Public Hearing For CONTINUED TO FILE NUMBER RECOMMENDED ACTION 1) Approve the certified final Environmental Assessment and Environmental Impact Report for the Mid Basin Centennial Park Injection Well project proposed by the Orange County Water District and approve the Findings of Fact and Mitigation Monitoring and Reporting Program. 2) Authorize the City Manager and Clerk of the Council to execute a License Agreement with Orange County Water District for the construction and operation of the Mid Basin Centennial Park Injection Wells that will begin on January 1, 2019 and end on December 31, 2049, subject to non - substantive changes approved by the City Manager and City Attorney. DISCUSSION The purpose of the Mid Basin Centennial Park Injection Well Project is to replenish the Orange County Groundwater Basin with advanced treatment recycled water from the Orange County Water District Groundwater Replenishment System (GWR System). On September 2, 2014, the City of Santa Ana and the Orange County Water District (OCWD) entered into a Memorandum of Understanding for the purpose of establishing an easement for installation and operation of four water injection wells and supply lines at Centennial Park. Subsequently after discussion with the National Park Services (NIPS) it was agreed that a license agreement was the correct instrument for such purposes. License agreement will be in effect for 30 years and will begin after completion of work January 1, 2019 and expire on December 31, 2049 (Exhibit A). On May 12, 2015 OCWD staff presented their study to install water injection wells in Centennial Park to Windsor Village Neighborhood Association. On June 11, 2015 the same study was presented to the Valley Adams, Centennial Park, Laurelhurst and Shadow Run Neighborhood Association. On February 10 and 11, 2016 the Environmental Impact Report (EIR) was 25C -1 License Agreement with OCWD for Water Injection Wells at Centennial Park June 21, 2016 Page 2 circulated and presented to the same neighborhood associations. Comments from these meetings were addressed and answered. Similar presentations were made to the staff of the Santa Ana College and the Santa Ana Unified School District Unified School District. On April 20, 2016, the OCWD Board certified the EIR to install four water injection wells at Centennial Park. The Injection Wells will be constructed in four parking lots in the park (1) N/W Parking Lot, (2) N/E Parking Lot, (3) S/W Parking Lot, and (4) East Parking Lot (Exhibit B). A single monitoring well will be constructed at the Heritage Museum site. Injection wells would operate 24 hours a day injecting water into the groundwater basin at a depth of approx. 1200 feet. To minimize impact on park activity and SA College /SAUSD Godinez High School traffic, majority of the work will be done at night. Noise levels will also be monitored during the drilling phase of the work. As part of this agreement, OCWD will resurface Centennial parking lots and roadway, construct two shared recreational /communication structures in the park (restroom /locker room at soccer complex field No. 4 and restroom /recreation office at the skate park), extend skate park fencing to six foot height and install on -site security camera system overlooking the skate park. Water to periodically backflush the well will be discharged into Centennial Lake to replenish water losses as a water conservation measure. A secondary discharge option will be into the Greenville Banning Flood Control Channel east side of Centennial Park. OCWD shall be responsible for cost of utility service, permits and area restoration. OCWD estimates the project cost to be approximately $33 million. Funding will be available through grants and other OCWD sources. Centennial Park was obtained from the Federal Government under the condition that the property be used for parks and recreational purposes only. Any other uses require the approval of the Department of Interior National Park Services. Since the improvements will be underground and will not impact the recreational uses of the site, NIPS has approved the execution of such license agreement. To minimize impact to the park during construction, the injection well installation will be done in phases and at night. The area will be open for use before construction of the next injection well. Also, a portion of Centennial Park was developed with Land and Water Conservation Grant Funding (LWCF), which requires that the recreational abilities of the park be preserved at all times and requires State of California review. The State reviewed the proposed project and indicated if any single location is not impacted beyond 6 months it will not require a property conversion. OCWD is aware of this condition and is required to construct and minimize impact at each well site to less than 6 months. Per letter dated May 6, 2016 from the State Department of Parks and Recreation, the Department has determined that this request qualifies as an Underground Utility Easement as stated in Chapter 8 -12 (F) of the LWCF State Assistance Program and has approved the installation of the OCWD Injection Wells. 25C -2 License Agreement with OCWD for Water Injection Wells at Centennial Park June 21, 2016 Page 3 CEQA ANALYSIS The proposed project is required to undergo an environmental review in accordance with the National Environmental Policy Act (NEPA) and the California Environmental Quality Act (CEQA). In accordance with NEPA and CEQA, the Orange County Water District (OCWD) is the lead agency for the project, with the City of Santa Ana identified as a responsible agency. As the lead agency, the OCWD was responsible for the preparation of an Environmental Assessment (EA)/ Environmental Impact Report (EIR). Section 15096 of the State CEQA Guidelines (Article 7) identifies the process for a responsible agency. As a responsible agency, the City is required to consider the EIR that is prepared by the lead agency and reach its own conclusions on the project (Exhibit C). Prior to the preparation of the EA/EIR, staff met with OCWD staff on several occasions to discuss the scope and contents of the document. Staff has reviewed the document and provided comments to the OCWD during the EA/EIR public review period. A review of the document has found that no significant short -term construction or long -term operational impacts were identified from the construction of the proposed project. Impacts that were identified were able to be mitigated to a less than significant level. Mitigation measures have been included in the project to address environmental impacts associated with aesthetics, biological resources, cultural resources, geology /soils, hydrology /water quality, noise, and transportation and traffic (Exhibit D). Pursuant to Section 15096 (h) of the CEQA Guidelines, the City of Santa Ana is required to make findings as identified in Section 15091 of the CEQA Guidelines for each significant impact of the Project. Staff has considered the action of the OCWD's Board of Directors, the description of the Project's environmental impacts, the findings of fact (Exhibit D) and conclusions of law, and the conditions of certification, and, exercising its independent judgment, the City of Santa Ana finds that for all environmental impacts of the Project, changes or alterations have been required in, or incorporated into the Project which will avoid or substantially lessen the significant environmental effects as identified in the decision by the Board of Directors for the OCWD. In addition, the City is required to file a notice of determination for the project. This will be completed by staff upon a final determination of the project by the Council. STRATEGIC PLAN ALIGNMENT Approval of this item allows the City to meet Goal #5 - Community Health, Livability, Engagement & Sustainability, Objective #2 (Expand opportunities for conservation and environmental sustainability), Strategy A (Complete the City's Climate Action Plan with measures to address water conservation, energy efficient buildings (City and Community) and greenhouse gas emissions). 25C -3 License Agreement with OCWD for Water Injection Wells at Centennial Park June 21, 2016 Page 4 FISCAL IMPACT There is no fiscal impact with this action. Gerardo Mouet, Executive Director Parks, Recreation and Community Services Agency assan Haghgni Executive Director Planning and Building Agency EXHIBIT: A) License Agreement LVipiur Executive Director Public Works Agency B) Site Plan C) Final Environmental Impact Report D) Response to Comments /Mitigation Monitoring Program E) Finding of Facts 25C -4 LICENSE AGREEMENT This License Agreement ( "License ") is made and entered into this L) day of [month] 2016 by and between the CITY OF SANTA ANA , hereinafter referred to as the "City ", and ORANGE COUNTY WATER DISTRICT, a political subdivision of the State of California, the Licensee, hereinafter referred to as the "District" or "Licensee ", WHEREAS, the construction and operation of four injection wells, well vaults, water supply pipeline, backflush pipeline, two (2) Shared Recreation / Communication Structures, skate park fence and security camera, two (2) air -gap structures, all related appurtenances, and asphalt paving improvements for certain parking lots and roadways ( "Project ") at Centerxnial Park will serve the interests of both the City and District; and WHEREAS, the City owns the property where the Project would be constructed and operated subject to the terms and conditions specified in the public benefit conveyance deeds from the United States of America (attached as Exhibit 1); and WHEREAS, City and District entered into a Memorandum of Understanding on September 2, 2014 as a basis for establishing permanent and temporary casement on the property for the Project and subsequently agreed that a license was the appropriate instrument for such purposes. NOW, THEREFORE, the parties hereto establish the fallowing: PART ISSUANCE OT LICENSE 1.1 License. The City hereby issues to the District a License to enter upon the following real .property owned by the City for the purpose or activity specified in Section 1.1.2: 1.1.1 Licensed Proparty, Centennial Park, 3000 West Edinger Avenue Santa Ana California 92704 as shown in Exhibit 2, attached hereto and incorporated herein by this reference ( "Premises "). 1.1.2 Use of Premises, For and dining the term of this License, and any extension, or renewal thereof, the District shall use the Premises solely and exclusively for the following purpow(s) or activities: 112.1 Construction, Oueratian, and Maintenance of Proieot. Exhibit 2 depicts the approximate proposed location of the Project to be included in the Premises. The actual configuration and size of the area covered by the License will be based upon the actual location of the well sites and the alignments of the water supply and discharge pipelines. The pipeline license aligmnent shall be 10 feet wide and centered upon the respective constructed pipeline center. The well site shall include the area occupied by the constructed well facilities plus a 5 foot buffer around their perimeters, This License includes the right for the District to occupy the Premises and for access to and from the Premises for construction, Exhibit A i 3 iiozzs99 -ooi e 9316498.1 u04i26116 25C -5 131/022499 -0016 9316490.1 maintenance, and operation of the Project. City shall approve all construction plans prior to commencement of construction, which approval shall not be unreasonably withheld. Well maintenance may include reconstruction, redevelopment, reftnrbishing, removal and replacement, inspection, and. taking of water samples. It is anticipated that the well will require redeveloping or refurbishing once every five (5) years; however, due to the nature of water wells, District reserves the right to reasonably determine when the use of such maintenance activities is necessary which may be less than every five (5) years. District shall notify City at least 60 days in advance of maintenance activities that will utilize heavy equipment such as a well develop /pump rig. It is anticipated that 14 parking stalls will be taken out of service for 2 weeks during maintenance of each well. City reserves the right to inspect and require that the area impacted by the well maintenance and redevelopment work is restored to its original condition or better, to the satisfaction of the City, at the conclusion of the work, 1.1.2.2 Temroorary Construction Areas. Exhibit 3, attached hereto and incorporated herein by this reference, depicts the approximate locations of the Temporary Well Construction Areas, whieh permit District to occupy and use approximately 12,000- 15,000 square feet of temporary work area at each injection well for approximately 3 months during the construction period of the Project to accommodate drilling and well development, followed by Licensee's use of an approximate 3,000 square foot temporary work area at each injection well for 3 months to equip the well, During well drilling, development, and construction temporary sound mitigators shall be installed around the work areas to reduce noise generated by such activities. Portions of the well and pipeline construction will require active construction work over several 24 hour days. The District shall have the right to use temporary work areas along the alignments of Project shown in Exhibit 2. 1.1.13 Injection Well Locations. District shall construct each injection well below grade within vaults that have access hatches centered within existing parking stalls. An additional access hatch for personnel entry will be located nearby to allow emergency access into the well vault if a car is parked above the primary access hatch. City shall not authorize loads in excess of 16,000 lbs. to be placed on or over the well vault locations. 1.1.2,4 Backflus'h into Centennial Lake. When mutually feasible, City and District agreo to use well backflush water to replenish Centennial Lake water losses as a water conservation measure. District shall backflusb the injection wells into the existing Centennial Lake's wet well air -gap structure as a primary discharge outlet and to the Greenville Banning channel via City's existing storm drain system as a secondary discharge outlet. District shall coordinate with City at least 24 hours prior to any discharge to Centennial Lake by District. District's discharge of backflush water into the Centennial Lake shall not cause the Centennial Lake's water level to rise Co an elevation of over (ow into the existing spillway structure. District shall not be held responsible for events not directly related to District's discharge that may cause an overflow, such as City's -2- 25C -6 Centennial Lake filling systems, precipitation, or any other occurrence, If City or District determine a particular discharge event into the Centennial Lake is not feasible, District shall use the discharge outlet to the Greenville Banning channel and shall perform at its sole cost the necessary testing and permitting to comply with regulatory discharge requirements, District shall obtain all necessary permits for discharge to the channel. Discharge to the Greenville Banning channel will occur via a now air -gap structure located in the southwest portion of the park, One wall of the new air -gap structure will replace the current high school sign. The new air -gap will discharge to the existing City storm drain catch basin located on the north side of the Centennial Park access road as shown in Exhibit 2, The frequency, duration, and volume of District's discharge events will be determined by the individual performance of each injection well, It is anticipated, that during normal injeotion operations there will be two (2) discharge events per week totaling 140,000 gallons per week, 1,2 Coordination. 1.2.1 Design and Environmental Documentation. As stated in the MOU, on file with the City and District, District shall be responsible for the design and construction of the Project, preparation of all documents to comply with California Environmental Quality Act and National Environmental Policy Act, and shall provide staff assistance to the City of Santa Ana for coordination with the United States Department of the Interior. The District shall provide the City with an administrative draft version of any environmental documents prepared for the proposed. Project and respond to City comments on the draft documents prior to releasing the environmental documents for public review, The District shall not propose or agree to any mitigation measures that affect City lands without ,prior City approval, which may be withheld for any reason. The District shall include the City in the design comment and review processes. 1.2,2 State Grant, The parties acknowledge that the City was awarded a Land and Water Conservation Grant to build improvements on the park which requires that the recreational abilities of the park be preserved at all times, but in no event shall the recreational abilities of the park in any single location be impacted beyond six (6) months. Accordingly, to the extent that a well site is located in one of the Grant Improvement areas, the parties mutually agree that any binding commitment is expressly conditioned upon approval by the State of California (hereinafter, the "State"), The District shall assist the City in submitting required documentation to the State. The City understands that time is of the essence and will make a good faith effort to expedite this approval process. 1.13 Federal Govenmrent. The parties agree that a precondition to any binding commitment requires concurrence by the Federal Government inasmuch as the property in question was a Federal property transferred by the Department of Interior to the City as public benefit conveyance for development of a regional park and any licenses thereon require Federal concurrence, The District shall assist the City in submitting required documentation to the Federal Government, The City understands that time is of the essence and will make a good faith effort to expedite this approval process. Notwithstanding any provision of this Agreement, the parties mutually agree that any binding commitment is expressly conditioned upon concurrence by the Federal Government, In the event that this License is issued prior to concurrence of the M/02209 -0016 9316496.1 -3- 25C -7 Project by the Federal Government, then, notwithstanding any provision of this Agreement, the parties mutually agree that any binding commitment is expressly conditioned upon concurrence by the Federal Government. 1.2.3.1 No Disposal of Premises. The issuance of this License does not constitute a disposal of the Promises. Notwithstanding any provision of this Agreement, the City shall ensure that the Premises will continue to be used for public park and recreation purposes by the general public and be maintained in a safe and environmentally appropriate condition. 1,2.4 Coordination. District shall coordinate with the City during design, construction, and acceptance of construction in order to minimize disruptions at Centennial Park, The parties agree that they shall minimize any disruption to the operations of Godinez High School and the Centennial Career Education Center. District acknowledges that it shall be responsible for the replacement of all landscaping and park amenities that might be inadvertently damaged during construction as a result of the District's contractor negligence, District construction impact, District operational activities, or District maintenance. 1.3 Term. 13.1 Temnora_ ry Constriction Areas, The Temporary Construction Areas for the uses as stated in Section 1.1.2.2 shall comrnonce on the construction date approved by both City and District ( "Commencement Date ") and shall continue to and terminate upon the filing of the Notice of Completion for the Prolect construction ("Completion Date "), 1.3.2 Long -Term License. The long -term license for the uses stated in Section 1.12, shall commence on January 1, 2019 or the Completion Date, whichever one is earliest, (the "Commencement Date "), mid shall continue to and terminate at 11:59 p.m. local time on December 31, 2049 ( "Expiration Date "). This License and the District rights hereunder may not be extended beyond the Expiration Date unless such extension is set forth in writing and executed by both the District and the City. 1.3.3 Termination. The License shall terminate in the event that District materially violates any provision of this Agreement. 1.4 License Consideration. As consideration for the issuance of this License, and for District's use of the Premises for thirty (30) years, the District shall ,provide the following improvements to the Premises in accordance with the other relevant provisions of this License: 1.4.1 Paving. After the pipeline, well, said equipping construction is complete, the District shall improve all parking lots and roadways identified in Exhibit 2, Such paving improverents shall include the removal and overlay of the top two (2) inches of asphalt from the parking lots and roadways in accordance with City Standards, 1,42 Shared Recreation /Communication Structure 1. During the first phase of the Project construction, the District shall construct an approximate 1,550 square foot Shared Recreation / Communication Structure 1 as identified in Exhibit 2, for use as public restrooms and changing rooms for the City and a utility room for the District to house electrical and 1311022499.0016 9316498A -4- 25C -8 communication equipment. The final configuration and size of the Shared Recreation / Communication Structure I will be established by the District's final design, The structure shall be located in the northwest portion of the Park adjacent to the existing soccer field perimeter fence, A shared power service will be constructed below grade, to the extent possible, to the structure from the existing power distribution system owned by a third party, 1.4,3 Shared Reor ion /Communication Structure 2. During the first phase of the Project construction, the District shall construct an approximate 1,014 square foot Shared Recreation / Communication Structure 2 as identified in Exhibit 2, for use as a public restroom and office for the City and utility room for the District to house electrical and oommunication equipment. The final configuration and size of the Shared Recreation / Communication Structure 2 will be established by the District's final design, The structure shall be located in the northeast portion of the Park nearby the existing Skate Park, This structure shall replace the existing bathroom structure to be demolished by District. A shared power service will be constructed below grade, to the extent possible, to the structure from the existing power distribution system owned by a third party. 1.4.4 Skate Park Pence Iniyrovements, District shall remove and replace approximately 600 linear. feet of the fencing axound the Centennial Park Skate Park and replace it with six feet height fencing and shall construct an on -site security camera system connecting a camera overlooking the Skate Park to a digital video recording device within the proposed Shared Recreation / Communication Structure 2. The type of fencing and selection and location of the security camera shall be jointly determined by District and City during the Project design, 1.4.5 Guarantee. The District shall provide a five (5) year guarantee of workmanship and/or materials for the improvements and structures described in Section 1.4 and the final Project Construction Documents, excluding ordinary wear and tear and unusual abuse or neglect. Ordinary maintenance of the two (2) Shared Recreation / Communication Structures, contents, systems, and supplies shall be the sole responsibility of the City, excluding the two (2) District utility rooms. The District and City shall jointly share maintenance and repair responsibility for the portions of the structures that serve 'both as a District facility and a City facility. 1.5 Use of Premises 1.5.1 Conditions of Use. For and during the term of this License, and, any extension or renewal thereof, District's use of the Premises shall be subject to the following conditions, covenants and restrictions: 1.5.1.1 District shall use, occupy, and maintain the Ptemises in a business -like, careful, clean, and non- hazardous manner for the sole purposes specified in Section 1. 1.2 above in strict accordance with all terms and conditions imposed by the United States Department of the Interior as set forth in Exhibit 1. Written approval by the City of Santa Ana and written concurrence by the Secretary of the Interior or his/her delegated representative, NPS, shall be acquired for other proposed use in conjunction with or in, addition to those specified above. 1 31/0;47499-0016 9316499.1 -5- 25C -9 1.5.1.2 The District shall not maintain, commit or permit the maintenance or commission of any waste or any nuisance (as defined in California Civil Code section 3479 or the Santa Ana Municipal Code, as either play be amended from time to time) on the Premises, and the District shall not use or permit the use of the Premises for any unlawful purpose, 1.5.2 Utilities and Services. District shall be solely responsible for obtaining all utility service and for the payment of all utility design and installation charges, including but not limited to water and power, supplied to the Promises for those uses as defined in this License. Each party will be responsible for their respective monthly utility charges incurred after completion of construction of Project. 1.5.3 Permits and Approvals. District shall obtain any and all governrneutal permits, approvals, licenses and/or other authorizations which may be required in connection with the construction and use of the Premises as set forth in this License. 1.5,4 Area Restoration. District shall during the term of this License, restore any area disturbed during construction or maintenance of uses defined in this License to the general condition that existed prior to entry, at its sole cost and expense, reasonable wear and tear excepted. 1.6 Insurance. Without limiting District's indemnification obligations, the District shall maintain during the life of this License, Comprehensive General Liability insurance or commercial general liability insurance written on an occurrence basis providing for a combined single limit of at least $2,000,000.00 for bodily injury, death, and property damage or provide the City evidence that the District is self - insured. The District shall not enter or occupy the Promises until the District has obtained all of the insurance required herein from a company or companies licensed to do business in the State of California and the District shall maintain all such insurance in fill force and effect at all times during the term of this License and any extension or renewal thereof. Insurance shall be placed with insurers having a ctuxent A.M. Best rating of no less than A -:VII or equivalent. Alternatively, District may submit a Letter of Self- Insurance from its Joint Powers Insurance Authority ( "1PIA ") in lieu of a Certificate of Insurance in a form acceptable to the City. 1.7 Indemnification. Each Party shall indemnify, hold harmless and defend the other Party, and any of its officials, officers, employees or agents, from any and all claims, liabilities, obligations and causes of action, including reasonable attorney's fees and costs, resulting from any and all negligent actions or willful misconduct of the indemnifying Party or any of its officials, officers, employees, agents, consultants, and licensees in the performance of its duties or obligations under this License, PART 11 MISCELLANEOUS 2.1 Notices. Any notice, payment or instrument required or permitted to be given or delivered by this License may be given or delivered by personal delivery or by depositing the same in any United States mail depository, first class postage prepaid, and addressed as follows: If to District: 1711022499 -0016 9316498,1 -6^ 25C -10 If by mail: ORANGE COUNTY WATER DISTRICT P.O, Box 8300 Fountain Valley, CA 92728 -8300 Attn: Property Management If by personal delivery; ORANGE COUNTY WATER DISTRICT 18700 Ward Street Fountain Valley, CA 92708 Attn: Property Management If to City of Santa Ana If by mail: If by personal delivery, CITY OF SANTA ANA 20 Civic Center Plaza Santa Ana, CA 92701 Attn: City Cleric CITY OF SANTA ANA 20 Civic Center Plaza Santa Ana, CA 92701 Attn: City Clerk or such other person or address as either party may direct in writing to the other; provided, however, that such new or afferent person or address shall not become effective until acknowledged in writing by the party to whom directed, Except where service is by personal delivery or by registered or certified mail, return receipt requested, service of any instrument or writing shall be deemed completed forty -eight (48) hours after deposit in a United States mail depository. 2.2 Warranty of Authority, Each officer of the District and the City affixing his or her signature to this License warrants and represents by such signature that he or she has the full legal authority to bind his or her respective party to all of the terms, conditions and provisions of this License, that his or her respective party has the full legal right, power, capacity and authority to enter into this License and perform all of its provisions and obligations, and that no other approvals ar consents are necessary in connection therewith. 2,3 Headings, The titles and headings of Sections and Paragraphs of this License, as heroin set forth, have been inserted for the salve of convenience only, and are not to be taken, deemed or construed to be any part of the terms, covenants or conditions of this License, or to control, limit or modify any of the terms, covenants or conditions hereof. 2.4 Time of Essence. Time is of the essence of this License. Failure to comply with any requirement, including but not limited to any time requixenrent, of this License shall constitute a material breach of this License. 2,5 Tn, tegration, This License represents the entire understanding of the District and the City as to the License and all other matters contained herein. No prior oral or written understanding shall be of any force or effect with regard to those matters covered by this 130224994016 93161198,1 -7- 25C -11 License. This License supersedes and cancels any and all previous negotiations, arrangements, agreements or understandings, if any, between the parties, and none shall be used to interpret this License. 2.6 Construction and Amendment. This License shall be construed, interpreted, governed and enforced in all respects according to the laws of the State of California and as if drafted by both the District and the City. No amendment, change or modification of this document shall be valid unless in writing, stating that it amands, changes or modifies this License, and signed by all of the parties hereto. 2.7 Successors. The License, and all of the terms, conditions and provisions herein, shall inure to the benefit of, and be binding upon, District, City, and their respective successors and assigns. 2.8 Partial Invalidity. If any term, covenant, condition or provision of this License is held by a, court of competent jurisdiction to be invalid, void, illegal, or unenforceable, the remainder of the provisions hereof shall remain in full force and effect and shall in no way affect, impair, or invalidate any other to=, covenant, condition or provision contained in this License. 2.9 Further Assurances. Each of the parties hereto shall execute and deliver any and all additional papers, documents and other assurances and shall do any and all acts and things reasonably necessary in connection with the performance of their obligations hereunder and to carry out the intent of the parties hereto. 2.10 Attorney's Fees. Subject to any other provision stated herein, in any action or proceeding between the parties hereto seeking interpretation or enforcement of any of the terms and provisions of this License or in connection with the Premises, the prevailing party in such action or proceeding shall be entitled to have and, to recover from the other party its reasonable attorney's fees and other reasonable expenses in connection with such action or proceeding in addition to its recoverable court cost, Acl�nowled�emerit: This Agreement and the obligations of the parties hereto are subject to the terms and conditions set forth in the deeds from the United States of America to the City of Santa Ana, dated_ September 1, 1967, June t, 1969, and June 30, 1977, and recorded at County of Orange Office of the County Recorder as Dociunent Np 16894 at Book 8384, .Page 210, Document Ne 410 at Book 9037, Page 694, Document N212861 at Book 12326, Page 1194, and the current Program of Utilization which governs the use of the assigned property. Violations of the said terns and conditions may be grounds for reversion to the United States of America, at its discretion and termination of this Agreement. Licensee owned personal and real property improvements associated with the real property, may be subject to seizure, without compensation, by the USA. ISIGNATUM, ON NEXT PAGE] (31/022499 -0016 9316498.1 ' 8' 25C -12 IN WITNESS WHEREOF, the parties have executed and entered into this License as of the date first set forth above. "District" "City" ORANGE COUNTY WATER DISTRICT, CITY OF SANTA ANA, a municipal a political subdivision of the State of the corporation California organized under Chapter 924 of the Statutes of 1933, as amended Cathy Green, President Miguel Pulido, Mayor By: ATTEST: Michael Markus P.E., General Manager APPROVED AS TO FORM: RUTAN & TUCKER, LLP General Counsel, Orange County Water District RECOMMENDED FOR APAL: GERARDO MOUET Executive Director of Parks, Recreation, and Community Services Agency By: Maria D. Huizar, Clerk of the Council APPROVED AS TO FORM: Vow- iu-. -F�..,.� M. Funk, Assistant City Attorney, City of Santa Ana 13 0022499 -9DI6 9110498.1 -9- 25C -13 111/022499.00 t6 9916498.1 EXHIBIT 1 USA Qiiitclsim Deeds (3) 40- 25C -14 w..,R9(,'O.RDING REQUESTED BY- y"cb i ,..'fl;~'rkof the 'Council I �.M1�w�� w:crnY Dr+ SANTA ANA 4 Bb 12326?91 194 ' 20•, CL'vi.c center Plaza ,e,t Santa Ana,, CA 92701 �O EA pT IN OFFICIAL RMO RDS ANOa COUNTY, CALIFORNIA Portion, F.C,C. Monitoring v C5 FRSCOIROse) 12 FMAUG S 1977 Station, Santa Ana Z- Calif -598C UECARLPL Eoxn anoadar rY ' RETURN RECORDED DOCUMENT TO DOCUMENTARY TRANSFER TAX $EXEMPT CITY 08 BANTA ANA ODITOLAIM DEEP nk ' Deputy Ller o�t��a qunca THE UNITED STATES OF AMERICA, acting by and through the Secretary of the Interior, acting by and through the Director, Bureau of Outdoor Recreation, under and pursuant to the power and authority contained in the provisions of the Federal Property and Administrative Services Act of 1949 (63 Stat. 337), as amended; and particularly as amended by Public Law 485, 91st Congress, and regulations and y orders promulgated thereunder (hereinafter designated "Grantor "), for and in n consideration of the perpetual use of the hereinafter described premises as And for public park and public recreation area purposes, by the City of Santa Ana ( harelnafter designated "Grantee "), does hereby release and quitclaim to y M Grantee, and to its successors and assigns, all Grantor's right, title and Interest in and to the following described property located in Orange County, California and Consisting of approximately 21.65 scrasl p Begin at portion of Section 22, Township 6 South, Range 10 West, COWsahcing at a point in the Easterly Line of the Santa Ana River, as shown on Record of Survey Map No. $061, recorded at the Office ' of the Recorder, County of Orange on ,January 31, 1966, Record of Survey Map Book 65, Page 28; where the Center Line of Edinger Avenue intersects said Easterly Line; thence, easterly along said Center Line of Edinger Avenue N. 88° 50' 00" E., 1390..00 ft. to a point, thence S. V 10' 00" E. 62.00 ft., to a point in the Southerly Line of Edinger Ave.; said point also being the True Point of Beginning; thence easterly along said Southerly Line of Edinger Avenue N. 88° 50' 00" E., 869.11 ft. to the beginning of a tangent curve to the southeast with a radius of 948.00 ft.; thence easterly and southeasterly along said tangent curve through a central angle Of 120 14' 17" an arc length of 208.61 ft, to a paint in the Westerly Line of the Orange County Flood Control District Channel as shown on'aforemantioned Record of Survey Map; thence southwesterly along said Westarly Line of the O.C.F.C,D, Channel S. IV 521 12" IN, 1874.31 ft., to a point In said Westerly Line of O.C.F.C.D. Channel; thence westerly along a line S. 88° 50' 00" W„ 761,'19 ft, to a point; thence northerly along a line perpendicular to the last described line N. 1° 10' 00" W., 1080.00 ft. to the True Point of Beginning. To Have and to Hold the hereinbefore described property, subject to the reservations, exceptions, restrictions, conditions and covenants horain expressed and set forth unto the Grantee, its successors, and assigns, forever. The herainbefore described property is granted by the Grantor to the Grantee subject to any and all outstanding easements for streets, utility systems, rights -of -way, railroads, pipelines, and /or covenants, restrictions, reservations, auditions, and agrooments of record which now exist affecting the foregoing described premises. The Grantor expressly excepts and reserves all oil, gas, and mineral rights and deposits in said land to the Grantor or to such person(s) as may be authorized by the Grantor to prospect, mina, and remove such deposits from the hereinbefore described property under applicable laws. Pursuant to authority contained in the Federal Property and Administrative Services Act of 1949, as amended, and applicable rules, regulations and orders promulgated thereunder, the General Services Administration determined the property to be surplus to the needs of the United States of America and assigned the property to the Department of the Interior for conveyance to the Grantee, It is Agreed and Understood by and between the Grantor and Grantee, and the Grantee by its acceptance of this deed, does acknowledge its understanding of the agreement, and does covenant and agree for itself, and its successors and assigns, forever, as follows: 25C -15 BK 12326H 1195 1, This property shall be used and maintained for the public purposes for which It was conveyed lit perpetuity as set forth in the program of utilization and plan contained in the appli- cation, submitted by the Grantee on November 19, 1475 which program and plan may be amended from time to time at the request of either the Grantor or Grantee, with the written concurrence of the other party, and such amendments will be added to and become a part of the original application. 2, The Grantee shall, within 6 months of the date of the deed of conveyance, erect and maintain a permanent sign or marker near the point of principal access to the conveyed area Indicating that the property is a park or recreation area and has been acquired from 'the Federal Government for use by the general public, 3, The property shall not be sold, leased, assigned, or otherwise disposed of except to another eligible governmental agency that the Secretary of the Interior agrees in writing can assure the continued use and maintenance of the property for public park or public recreational purposes subject to the same terms and conditions 'in the original instrument of conveyance, However, nothing in this provision shall preclude the Grantee from providing related recreational facilities and services compatible with the approved application, through concession agreements entered into with third parties, provided prior concurrence to such agreements is obtained in writing from the Secretary of the Interior. 4. From the date of this conveyance, the Grantee, its successors and assigns, shall submit biennial reports to the Secretary of the Interior, setting forth the use made of the property during the preceding two -year period, and other pertinent data establishing its continuous use for the purposes set forth above, for 10 consecutive reports and as further determined by the secretary of the Interior. 5, if at any time the Grantor shall determine that the promises herein conveyed, or any part thereof, are needed for the national defense, all right, title and interest in and to said premises, or part thereof determined to be necessary to said national defense, shall revert to and become the property of the Grantor. 6, As part of the consideration for this Deed, the Grantee covenants and agrees for itself, its successors and assigns, that; (1) the program for or in connection with which this geed is made will be conducted in compliance with, and the Grantee, its successors and assigns, will comply with all requirements Imposed by or pursuant to the regulations of the Department of the Interior as In effect on the date of this Deed (43 C.F.R. Part 17) issued under the provisions of Title VI of the Civil (tights Act of 1964; (2) this covenant shall be subject 'In all respects to the provisions of safe regulations; 3) the Grantee, its successors and assigns, Will promptly take and continue to take such action as may be necessary to effectuate this covenant; (4) the United States shall have the right to seek judicial enforcement of this covenant; (5) 'the Grantee, its successors and assigns, will (a) obtain from each other person (any to at entity) who, through contractual or other arrangements with the Grantee, its successors or assigns, is authorized to provide services or benefits under said program, a written agreement pursuant to which such other person shall, with respect to the services or benefits which he is authorized to provide, undertake for himself the same obligations as tnose imposed upon the Grantee, its successors and assigns, by this covenant, and (b) furnish a copy of such agreement 25C -16 OK 12326P61 196 to the Secretary of the Interlar, or his successor; (B) this covenant shall run lriith the land hereby conveyed, and shall In any event, Without regard to technical classification or designation legal or otherwise, be binding to the fullest extent permitted by law and equity for the benefit of, and in flavor of the Grantor and enforceable by the Grantor against the Grantee, its successors and assigns; and (7) the Grantor expressly reserves a right of access to and entrance upon, the above described property in order to determine compliance with the terms of this conveyance. 7. In the event that there is a breach of any of the conditions and covenants herein contained b the Grantee, Its successors and assigns, whether caused by the legal or other inability of the Grantee, its successors and assigns, to perform said conditions and covenants, or otherwise, all right, title and interest in and to the said premises shall revert to and become the property of the Grantor at its option which in addition to all other remedies for such breach shall have the right of entry upon said premises, and the Grantee, its successors and assigns, shall forfeit all right, title and interest in said premises and in any and all of the tenements, hereditaments and appurtenances thereunto belonging; provided, however, that the failure of the Secretary of the Department of the Interior to require in any one or more instances complete performance of any of the conditions or covenants shall not be construad as a waiver or relinquishment of such future performance, but the obligation of the Grantee, its successors and assigns, with respect to such future performance shall continue in ,full force and effect; B. In the event of reversion of title, the Grantee shall be required to provide protection and maintenance for the property until such time as the title reverts to the Grantor, including the period of any notice of intent to revert, IN WITNESS WHEREOF, the Grantor has caused these presents to be executed in its name and on its behalf this the 30th day of dune, 1977, UNITED STATES OF AMERICA Acting by and through the Secretary of the Interior By 25C -17 • ft 6K 1232CF61 197 COUNTY OF SAN FRANCISCO STATE OF CALIFORNIA as. On this 30th day of June, 1977, before me, Mary E. Meredith a Notary Public in and for the City and County of San Francisco, State of California, personalty appeared Frank E. Sylvester, known to me to be the Regional Director, Pacific Southwest Region, Bureau of outdoor Recreation, of the United States Department of the Interior, San Francisco, California, and acknowledged that he executed the within instrument on behalf of the United States of America, acting by and through the Secretary of the Interior. MARY F. MERCCIYH nOTARV PUALIO . OALpOflNI, n9l -Wal 11Ml Iry Ny Commission Expires: i The foregoing conveyance is hereby acceppted and the undersigned agrees, by this acceptance, to assure and be bound by a71 the obligations, conditions, convenant5 and agreements therein contained. By \ �ftCitCity Manager + Y This is to certify that the interest in real Property conveyed by the deed or grant dated ,,,� 11 �1�1°�"r'1 — from - ns,, to the City of Santa Ana, a politico,: ocrnoration and or governwent al agenoy, is hereby accepted by tba undereio ed officer or agent on be- half of the City Council purouent to authority conferred by P.asolution No. 69-156 of the City Council adopted on Ootober 6, 1969, and the grantee consents to recordation thereof by its duly authorized of'f'icer. 1�y l "/tu{ `y City Manager 4 25C -18 — -- WC:adg 7/9/77 BK 12326P51 158 RESOLUTION N0. 77 -75 A RESOLUTION 07 TE'EE CITY COUNCIL OF THE CITY OF SANTA ANA ACCEPTING A QUITCLAIM DEED FROM THE UNITED STATES OF AMERICA PURSUANT TO APPLICATION DATED �.+ NOVEMBER 19, 1575, WHEREAS, THE UNITED STATES OF AMERICA has executed C and delivered a quitclaim deed dated auns 30, 1977, conveying to the City of Santa Ana certain real property for Public park and public reoreation Purposes on the mouth side of Edinger Avenue oast of the Banta Ana River, Pursuant to an aPPlication for surplus Federal property dated November 19, 1975. NOW, THEREFORE, BE IT RESOLVEn by the City Council of the City of Santa Ana am follows: That the City of Santa Ana accepts said quitclaim deed and the canvoyance thereby made, and the C9.erk of the Council is directed to cause said quitclaim deed together with a copy of this Rosolution to he recorded in the office of the County Recorder. ADOPTED this 18th day of Ju1Yr 1977, by the following vote: AYES, COUNCILMEN: Brandt, Garthe, Bricken, Ortiz, Yamamoto, Ivans, Ward NOES, COUNCILMENi None ABSENT, COUNCILMEN: None ATTEST: ... . ORTGrNTAT -1 °'^.ai ^:D PY MAYOR CLERK OF TAB COUNCIL APPROVED AS TO FORM: 711E I'ali:4d: L; ICSi3'.f'.1']Y ri �� FULI. T ^lC G. ^ ia(',h!.a l.f fY pF J ` nn• . -� .... FLORENQ.....I'iNE r. +ln`. ....1..`..,,......_. 1.11 i1'.....L l'.. r "- e m c .,.................., CITY AT'T'ORNEY to ..... ...............`.!F�,Y'�,�+M�'l nu un' 25C -19 811 2326P 1 199 „ ,r �L:'.1 t �.. 14 ..a lay b.ee nneenea o •. +�., + ••�'•"' ° °n. ..y me b b.e.... .. b. nnm. +.....n. n e.N b. va.nnr.n ...4r. d.• e. n b .nu.. �.POA�SED F�l /rP0 /E/y OflPk S /T�- ,fV.Tg0 1-0-4.7 sle 25C -20 Security Title •9N3 J MHK aF50LU1 N5N p.N, Mom G" 1'Vlc lwftgN Ar P, N"huln- ..I�I.�.:'.._I,1ecv.9nnNC lD9 -too -5 8 ��r._ Portion, FCC Monitoring station Santa Ana, California 9 4- C411f -598 -5 (City of Santa Are) 22LVLAIM DEED r ,rR baop,90:37 1A4:694 /3 .1.3 r2- THIS DERD made the let day of June 1969, by and between the UN17ED STAPES Of ANTRICA, acting by and through the ADMINISTRA1pR OP GENERAL SERVICES, undor and pursuant to the powers and authority con- tained in the previsions of the Federal Property and Administrative Servicna Act at 1949 '(63 Stat, 377), the Surplus Property Act of 1944 (58 Stet, 765), as amended, more particu Lavly by Public Lew 616, 80th Congrass, approved ,Tune 10, 1948, and the regulations and orders issued pursuant thereto, P4r•ty of the first Part, and the CITY OF BANTA ANA, a moniOLpal corporatton under Che two of the Strata of California, Party at the Second Part, WITNES E s The Said party Of the First Part, for and in consideration of the bum of TEN DOLLARS ($10.00), receipt of which is hereby acknowledged, and the conditions, covenants and restrictions herein set forth, and in further consideration of the continuous use and maintenance of the premises by the Party of the Second Part as and for A public park for public recreational purposes, and other good and valuable consideration, has remised, released and forever quitelaimod, and by these preaante does romiea, release and forever quitclaim, unto the Party of the Second Part, and to its oucceasors and sA&iUnR' that real proparcy eituota in the City of Santa Ana, County of Oxango, State oC California, doacribad so follow Those portions of Section 22, Township 5 South, Ranga 10 West, in the Rancho Las Rolsaa, in the City of Santa Ana, as shown on a map recorded in hook 510 page 12 of Misoollamous Maps, records of Orange County, Coliforn9.a, and of Lora 1 and 4 of Tract No. 1024, in the City of Santa Ana, as ahown on a map recorded to book 33, page 33 of Miscellaneous Maps, reoordn of Orange County, California, described as follows; Beginning at the point of intersection of the Raotarly line of the river right -of -way of the Newbert Procaetton District with the North 'line of the southeast quarter (sS'�) of the Northwest quarter (NW40 of Section 22, TawnohLp 5 South, Range 10 West, s,ri,Y4,6M,; thence along said North lino Nurth 880 50' East 1368,951 foot to a point; thence south 10 10' East 1154 feet to a paint; thence South 530 39' 02" West 394.426 feet to a point; thence South 000 591 00" East 280.00 foot to a point; thence North 090 20' West along Cho South line of Lot 4 and its Westerly extenaton of Tract 1024 as shown an A map thereof recorded to Rook 33 at Page 33, Miscollaneous Maps, Records of Orange County, California, a diatanae of 1600,00 feat to a point in the said Easterly line of the river right -of -way of the Newbert Protection District, said Easterly line being on the are of a curve concave Northwest- erly having a radius of 23,093.33 fast, the radial to said curve of said point bears South 700 04' 58" Raati Chance NorCheas tarty along said curve through a aentral Anglo of 40 13' 3O" an are distance of 1,702.906 foot to the point of be- Stnning. Subject to easement and license for road right -of -Way along the Northerly 52 foot for Edinger Avenue, .. ............«..,....- m..._+. -,— .- ._,,... I Fii D.F' Rpdtla 4Ee AT af:RU C9T,On 25C -21 4� Portion, PCO Honitortng Station �CGs �q �'7 i11� Santa Ann, California 94- 001if�596 -11 (City of Santa Ana) Excepting therefrom the following described land; Raginnin8 at a point 30 feet Scuch 00 59' 00" East and to fact South 880 50' West from an iron axle set in the cancer tine of Edinger Avenue on the Westurly extension of the North line of "Tract 507, Santa Ana Cardona 2," as shown on map recorded in Book 20, pages 11 and 12 of Miscellaneous Maps, records of orange County, California, said auto heiog 980.82 feet South 880 50' West from the point of intersection of said North line with the center line of Cornell Avenue as shown on said map; running thence South 00 59' 00" East 100 foot; Chance South 880 50' West 40 feet; Chance North 00 59' 00" West 100 feat; Choose North 880 50' East to the point of beginning. ALSO SUBMIT to all easements, Ilona, reservatiene, exceptions or intareetg of record or now existing on the premises above described, SAID PROPERTY transferred hereby wao duly determined to be our - plum, and was assigned to the General Serviaaa Administration For dio- poaal pursuant to Cho Federal Property and Administrative Services Act of 1949 (63 Star. 377) , as amended, and applicable rules and regulations, TO 'HAVE AND TO H01D the said premises, with their appurtonan"S, unto the said Party of the Second Part, its Successors and asstguo, Sub- ject to the reservations, conditions and covenants herein contained, The said Party of the Second Part does, by the accapcsnca of this deed, covenant and agrea for itself, and its successors and assigns, fOVOWT as Follows! 1) The premises above described shall be forever and con- tinuously used and maintained ca and for a public park and pub- lic recreational area, and for Chase purposes only, to Record - once with the Applicotion for Public Park, Public Recreattonal Area and /or Historic Monument of the Party of the Seannd Pare dated November 18, 1968, copies of which are on file at the offices of the Bureau of Outdoor 'Recreation, Department of the interior, in San Francisco, California, and in the offices of the Party of the'Second Part to Santa Ana, California. 2) pram the date of this conveyance, the Party of the Second Part, its Successors and assigns, shall file biennial reports with the 8o4retgvy of the Interior, matting forth the use of the property during the preceding two-year period, and other portinoat data establishing i,ta continuous use of the premises for the purposes set forth above. 3) The Party of the Second Part will not sell, least, or otherwise dispose of, any of she premises above described except to another local Suveinmental agency that the 8edratary of the Interior is satisfied can assure the continued toe and matntonance of the property as and for a public park for recreational purposes. 4) The Party of the First Part shall have the right dur- ing Cho existence of any national emergency declared by the President of the United States of America, or the Congress 2 - 25C -22 portion, FCC Monitoring Station 90r�7 Santa Ana, California hooi, Id(f696 9- E- Calif -59B -B (City of Santa Ana) thavaof, to the lull, unrestricted possession, control and use of the premises, or any part thereof, without charge; EXCEPT that the party of the First Part shall be responsible during the period of such use, if occurring within a period of twenty (20) year$ from the date of this conveyance, for the entire 000C of maintaining the premises, or any portion thereof, so used, and shall pay a fair rental for the use of any installations or structures which have been added thareto without Federal aid; PROVIDED, HOWEVER, that if such use is required after the expiration of a period of twenty (20) years from the data of this conveyance, the Patty of the First ?art shall pay s fair rental for the entire portion of the premises so used. 5) As part of the consideration for this deed the Party of the Second Part, by aecepLioua thereof, covenants and sgroao for itself, its ouaOdOSOTa and asstgne, Char (1) rile Program for or in coinoation with which this dead is made Will be conducted in apmplianee withy and the Party of the Second Part, its successors and assigns, will comply with, and will require any other parson (any legal entity) who through contractual or other arrangements with the Party of the Second Part, its euccassora or assigns, is authorized to provide servicae or benefits under said program to comply with, all requi'romoeta imposed by or pursuant to the regula- tions of the Gonorat Scrvioes Administration ao in effect ou the date of this dead (41 CPR Subpart 101 «6,2) issued under the provisions of Title VI of the giv'1L Rights Act of 19641 (2) this covenant shall be subject in all respects to the provisions of said regulations; (3) the party of the Second Part, its successors and'assigns, will promptly take and continue to take such action as may be necessary to effectuate this covenant; (4) the United States shall have the right to seek Judicial ami!OMemunt c£ this covenant, and (y) the Party of tha Second Park, its succus a ova and aaaigns, will (a) obtain from each other person (any Legal entity) who, through contractual or other arrangements with the Party of the Second Part, its successors or assigns, is authorized to provide services or benefits under said Program, a written agreement pursuant to which such other person shall, with respaot to the services or bduof' is which he in authorized to provide, undertake for Memel£ the same obligations as those imposed upon the Party of the Second Part, its aunceasors and assigns, by this cPwnant, and (b) furnish the original of suah agree- ment to the Secretary of the Interior, or his successor, upon his request therefor. This covenant ahall run with the lead hereby conveyed, and shall in any event, without regard to technical nlasai£LCnti pn or designation, legal or otherwise, be binding to the fullest extent permitted by law and equity for the benefit of, and in favor of the Party of the First Part and Onforenable by the Party of the mirat Part against the Party of the $stand Part, its auocaesora'and assigns. to the avant of any bxoaeh of any condition or oovenant herein ocaWned, tagardleae of the cause of such breach, all right, title, and interest in and to the above described property, in its then existing condition, including all improvements thereon, shall rovart to and be- - 3 25C -23 i I Portion, FCC Monitoring station Santa. Ann, Cal Lfornia 9- Z- Cali£ -993 -11 (City of Santo Ana) 8oa9C37 in,697 carne the property of the United States upon demand made in writing by the Secretary of the Interior, or his successor in function. In such event the United States shall have the immediate right og entry upon said property, and the Party of the Second Pert, its suocoadora and assigns, shall forfeit all right, title, and interact in anid property and in any and all of the tenements, heradicenusnts, and appurtenances therounto belonging, and shall take each action and execute such documents as may be necessary or required to evidence transfer of title to such property to the United States. The failure of the Secretary of the Interior, or his successor in function, to insist upon complete performauos ag this condition in any one or store to- atmioes shall not be ounebrued as a waiver or ra linquiahment of future performance thereof, but the obligation of the Party of the Second pert, its successors and assigns, with respect to such future perform+ sate shall continue in full force and. effect. IN WITNESS WHEREOF, the UNITED STATES OF AWRIOA has cacsod theca presents to be executed as of the day and year first above written. UITITRD STATES OF AMRICA Acting by and through the ADMINISTRATOR OF GENEW 841MOES By red R. Jailnaton Ch , ReaaL- operty Division Property Management & Disposal Servica general Services Administration Region 9, San Francisco, California STATE OF CALIFORNIA se: City and County of San FrgnOlson ) on this 104 By a£ , 1969, bolero me, Sigrid E. Andoraoo, a Notary Public Ln for the City and County of San Granc Lsoc, State of California, rsonslly appeased FRED H. JOHNSTON, known to me to he the Chief, Reel Property Division, Property Managa* ment and Disposal Service, General Sarvtcaa Administration, Region 9, San Francisco, talifornia, and acknowledged that be executed the within instrument ou behalf of the United States of America, acting by and through the Administrator of General Services, WI'T'NESS my hand and official seal. r•'r ^'^'^'�"+" ^s?- Sigrid E. Anderson Notary public 'fi7,T i ^J T. a'F5L ?4.TP�Id in and for the City end County of :'1 ��' Ih'Jffi4 pF ban Francisco, Stara of Cali.£arnis My Commission Hxpixes: Mar, 3, 1973. -4- 25C -24 � M`/ toinn0aa!an GW�ru !1a,�,e 3, 19].3 My Commission Hxpixes: Mar, 3, 1973. -4- 25C -24 e � l=J Cy � OO F 3 0 tit ao�a9037 •� -F 25C -25 ti i '� 1J h 1684 paa�8384 rAC¢210 Portion PCO Monitoring Station ' Santa Ana, California THIS DEED made the lot day of September 1947, by and between the WITED STATES OF 'AMBRICA, acting by and through the ADMINISTRATOR OP CENRRAL S16RVICS9, under and pursuant to the power$ add authority contained in the provialons of the Fedaral Property mod Administrative Services Act of 1949 (63 Stat, 977), the Surptuo Property Aot of 1944 (58 Stat', 765), as aaianded, more pavtiourariy by public Low 616, 80th Congtoos, oppr0ad June 10, 1948, and'the ragulations and orders issued pursuant thereto, Patty of the Pirat 7kt, and the CITY OF SANTA ANA, a municipal corporation under the laws of the State of California, Party of the Second fart, WITNMM11• The said Pasty of the Virst Pert, for and in consideration of the aura of NINETY -FIV9 THONSAND, TWO M=b FIFTY DOLLARS (095,230,00) receipt of which is hereby eaknowladged, and in further oan4lda'r4tion of the continuous use and maintonanaa of the Francisco by the Party,of the Second PgkC wand for a publto park for public recreational pur- poaaa, and other good nod valuable consideration,, has rem£oed, ro l6aead and forever quitclaimed, and by those presents doe's 'rpmlea, 'ralesea and forover quitclaim, unte the Party of the Second Pact, and to Lte suc• connote and asotgna, that real property situate in the County of Orange, State of California, described as Eollowa: That portion of Lot.l of Tract Nu,.1024, as shown on a map recorded in Book 33, page 33 of Miscellaneous Maps, v000rda ' of Orange- Countyf Col "ornia, described as fotlowni 30g4nhing at a point an the want line of said Lot l which in , 18635 fee t,'N'ortnarly, (matured along maid Went line, from the ectthwest cornar of said Lot 1, and running thence North , .00c 90' 00" West along said Want line 105,65 feet; thence ' north 930 39' 02" Heat 394,426 feet to a polar on a line parallel with the North line of said Lot 1, said parallel line being 1154 feet Southerly, 'measured at right'angles. Prom rho Contorline 00 Ed lager Sttaat as shown oh said Treat No. 1024; thanoo North Be* 50' W' East along sold parallel line 761,19 goat to the feat llae of that certain PArcol 1, in the dead from W. F. Otoddy and Mooring M Cteddy be the trnited States of America recorded June 9, 1941, in Book 1100 at page, 43, Offipial Record# of Orango. County, California; thence South 1.50 49' 32" Want Hong otid East line 359.522°' feat, thence South 89° 20' 20" goat 978.892 feet to the point of beginding, containing 7,175`aotea, more or less, ASOJECT TO 611 casementn, 114ne, teaervationa, „emoephione or intereoea of tcoded oVIeW mhi6ting on the premises Abobe described, 1, SAID'PkOPERTY transferred hereby was duly detareinedf to be surplus, and wan asaigued to the general Sbrvicga Administration for disposal pursuant to the Federal Property And Administrative Services Act of 1949 ( 6 3 Stat, 377), an amended, and applicable Mules and regulatlans .. a; 25C -26 0 li aW a a� N zo FFFddd Pottion p0monitoking Station Santa Ana, California ' 9- 2- 0alif•dSg•P . (pity of Santa Ana) TO RM AND TO NOyD the said pramthas, with their appur tsneneea, unto the said Party of the Second Part, its sucepan ore and designs, sub,)ech to the reservations, conditions and covenants herein contained, The said Party of the Second Part does by the acceptance of this deed uovanent and a'grae for itself, and its aucakasara and assigns forever, as fallowat 1) d'ho Ore,aLoes above deoaribad shall be fovovat and can- tLnuc4sty used and maintained do had for A public park and public recreational area, and for those purposes only, in accordance With the Application for Public Park, Public Recreational Area and /or liiatorie Monument of the Party of the Second Part dated JAnuaty 20, 1967, copies of Which are on file it the offices of the Anrean of Cubdo4r RacrsntLen, Department of the Interior, in San Francisco, California, and in the offices of the Party of the Second Part in Santa Ana, California, 1 ' 2) Pram the date of this conveyance, tits Petty of the Second Fart, its .successors end ass£gna, shall file biennial reports with the Socrataryxi the Interior, aettiug forth the use of the prop arty during the preceding two -year period, and other porcinant data 9otablLahing its continuous use of the premihaa EOV the purposes -Oct forth above„ 3) The Party of the Second Part will not sail, inane, or otherwise dispose of, any of the premises above described except to another Ideal .govamoohtdl agency that the Secretary of the interior is datLofted can ensure the continued use and maintauened of the property an and for a public park for recreational purposes, 4) 'The Party of the First Part shall have the right during the exi$tones of any pat£cnal ommonoy declared by the President of the United Statds.of Amertoa, or the Congress, thereof, to the full, unrestricted possession, control and use of rho premie es, or any -part thereof, without charge; EXCEPT that the Party of the pirst Part shalt be responsible during the:perLod of such use, if Occurring within a period of twenty (20) year$ from the data of thin convoyanoo, for the entire eoat,of meintaining the pretdiada, or any potting thereof, 90 used, and atoll pay a fait rental for the use of say installation, or otruoourca,whioh have heed added• thereto wl.thout Federal aid; iAOVIDED, HOWEPPR, that if such use is re4aired after the expiration of a period of twenty (20) years from the data of this conveyance, the Petty of the Pirat Part OWL pay a felt rental for the entire portico of the premiaas so used, 5} As part of the consideration for this deed the Patty of the Second Part, by acooptsaoe tharoof, covenanto end agreed for itself, ttd successors and 409Lgns, that (1).the program got or in condection with which this dead is .made will be con - auotdd'in compliance with, and the Party'of the Seeend Pate, its ouaegosore and assigns,, will cbmply With, and will roquita any other patron (any legal ,onti,ty) who through contractual or other arrangements With the Party of the Second Part, its suoceeanrs -2- 25C -27 Portion FCC Monitoring station Seats Aria, Caltfbrais pJ,6'N =4 IStpF 2 1 9- yaG¢lif -S88 -B (City of Santa Ann) Or asaf.gna, is authorized to provido services or benefits under said progi'sm Ito aomply frith, All requirements impooad by or,phtounst to "the , re@utatiorta of the GonerAi Services A.dminLstration as ifi oefeet `an the data of, this dead (41 OPh subpart 10i -6.2) f.asued under -the provieiond of Title Vl of the Civil 7lights Act of 1964,; (2) this covenant shall be subject in all re'apecto to its provisiuta of said regu^ lations6 ,(3).the Party of the Secoad'Vart, its sucOessors and assigns,, will promptly' Cato and continue to take auah action as may be accessary to eifec'tusta thin novananti (4) , the Chit ad states shall bans the tight to cook judicial ehfordemeht of tW.e aavanent, std (5) the Party of the , Second Part, ILA'aueaaaaote sad asa,igns, will (a) obtain from each other person (say 19991 entityj.'whe, thtou$h� contractual or other Arrangements with the Party of the Second Part} its sundnsaors of assigns, is authoriAed to provide aarvisaa Or benefits under,said, Program, . a written agteemeat p6ewsunt to &filch ouch other parson shall, with , respect to the services or benefits which he to authorized to provide, undertake for himself the some obligOticnA As those imposed upon the party of the second part, its ounces - sets and assigns, by this covenant, and (b) furnish the Original of such agkeemett to the secretary at the lntorior, or his successor, upon his request therefor, This covenant shall run with the land hereby conveyed,.nnd shall in Any event, without regard to technical clasaifiOAtion or d9nig- nation, lagal or otherwise, be binding to the fullest eftteht permitted by law and equity far the benefit of, and id favor of the party of the First Part and enforceable by the Party of the First Part against the Party of the Second Part, its' successors and assigns. 6) The Party of the 34000d Part, its sucosaeors and , Assigns covenant and Woo Aa A part of the conaideratinh of this conveyance that they will not use not pefmtt A nee of the land haro'lu conveyed in -such a manear nn to aauOO 0104tr6- magnati4 radiation capable of causing intnrference of any kind vhatsoovar that will impede or diminish to any way the Otfinianc monitoring operation of the United states Government Monitoring Station located on land adjacent to the land conveyed by this instrument, The Perry of the Second Part, its OuceesOerO and assigns further cdvesaht'and agree not to iastAll at permit to be installed on the land hdrein described any device or devices, mechanical, aloatti.cal or otherwise cduAiGg ar likely to cause interference of any kind whatsoever with the tacdPtion of radio signals Ab the s£otoodid United States ateats,mant Monitcring Station, 'Tha patty of the Second Paxt„ lto oucoessors and assigns Also covonant'and Agree not to 'build or permit to be built on said land a tower ar any other kind of akroaWro of more than iGo feet in height aboV,6- ground without wvttcan per• misdi6a Iroia the padoial Communled.Yione Commission. The cove Cents'is this paragraph 6 shall run with, Cho land, be binding upon the parties and all persons clAimi »g under ^them until such " Lite as the sdjanent P,ederal GanmunioAtiuho Commission mopitoring station property is vacated by the vatted statai Government, g - a , 25C -28 Portion FCC Monitorigg Station Banta Ana', California dm'8384 m6(.241 3 M.6411£ -598+9 (pity of Santa Ana) Yn the avant of any breach of nay condition or COVeAant herein ryry contained, regardless of the cause of au011.broaab, all right, title, and J interest in and to the above- doocribad property,, in Its than emitting U condition,' including all imp COvammate thereon, ahall revert to and become r V6 the ptopeuty of the, United Stated upon demand mode in writLAS by the Secretary of the Ioterier, or his deceased% in function, In such avert the United States ahaLl have the Immediate right of entry upon said ?top- 0 Try, and the Party of the Second Part, ice successors and assigns shall farfeit all right, title, and intarast in amid property And Ln any and all of the tanamonte, hateditamento,- and appurtenances thereunto bolbnging, and shall take such cation and execute such daeumanta ad may he naadeaary or vaquivad to evidenoe transfer of title to auob property to the Galtad' Stated, The failure of the Secretary of the lntaziot, or him successor in funot£on, to insist upon CCMPldte perfOrmanoa of this condition In any Ono or more instandea a1,4£1 not be conatruad in a Waiver or reliuquiOhment of faturo porfotmmnae thereof, but the obligation of the Party of the gacohd part, its successor& and aas£ana, with reapeoe to such future performance shall continue Ia fuli forms and effect, IN W%TtaeBS 1PlY9DF,CF, the LrAtT9D STAT9d OF AMSRICA tan causal , theme presents to be oxacuted as of the day And year first above Written, UNITHI) SIAM CF M41MA Arcing by and through it's AMcWTgTRATGR CF CRFgRAL S9&VICSS Fred J hndton C9iaf, Real Yro ty Division Property Managema t and Disposal SerV£ca General Sarvioc& Administration' Region 9, ben Prhncisco, Cali£orn£h, OATS CF CALIFORNIA ) ( s&: City and County of San Fxaacieco ) on this � day of"'e''196Y + e me, Sigrid', Anderson, a Not4ty public in an for t City slid County Of San Ftanoiabo, State of California, °perdonelly appeared FR9D R. JOSMSTCN, known to me to So the Chief, Real Property 10istoo" Property Management d Disposal Service, fdeoeraL Services Administration, Region 9, Ban Freucieco, Califorutm, and aaknowledgad through-the Adminiatrator 64 Sanarnl within jultrument on sGniCOd Servieen. WkMSS my hand and Offlotal deal, 'a `4 a� (.il ajj'n, t0� }.. •71'1 /�.('i /f///��✓/'�yj�l 9 �• a d4jgrid E. AAdanaOA .i 1 !n'•; a:j .,t a •, ,?,.,.7�.:'1 i Notary Yahlix f to and for tho CLty slid Ccgnty of h,,�,';. "•,'�, .,; �;� Sao FK &RC1aoo, SCdcO of California " My COmmias£on Rxpiees: 4Sardh 4, 1969 -4+ 25C -29 25C -30 M a` P �P r EXHIBIT 2 snared Racleaacn 1 Commumaa?.no $iNC10a I 15 Fml CorolNCannAraa Confine on Each Conveyances Shred NrAap SVUdua EDINGER AVENUE MA {� I � fi wow Recleallo f Cammunked. BWWa2 Skala Park Fence lmpravamanls N Mid-Basin Injection Well Project e' —I�3el mild Pranises — P -$uppry PipeYne ® PInpcdon Weo Cmronnlal Park — PSac40ush Pipefne — P -Power PPovemenl lmpmveinanb Enmbil l'Premises IJI 0224%-[K) 14 eJ16A9n.1 25C -31 EXHIBIT 3 s w 100 - -- p.Dackgush Pipeline IAllling Area — P.Supply Pipeline Equipping Area I 1 I I], 49041011, glI!• JIM t - = 25C -32 Mltl-Basin Injectipn Well Project Well Drilling a Construction Impact Areas Elhieit 2 Tgmpdary Tvell UnVruCOen Areas �y 3NO OrdI -31 Parking Spaces(t7462 Sgft) M, Or 11 -Pe q6c 1 - 6 ASgF F 3 MG Equip. 12 Spaces (3.000 SgFtl 3M Eq p Sps I _0 SGF �j 3MO o Ecut Parking Spaces 3t S!� 3 Mp Equip t4 Spaces r'i ..�„ .... '.k Drell -20 Parking Spaces (10 300 SgFll ,. JJJ ± Nlo Equip 10 Spaces (3006 SgFq s w 100 - -- p.Dackgush Pipeline IAllling Area — P.Supply Pipeline Equipping Area I 1 I I], 49041011, glI!• JIM t - = 25C -32 Mltl-Basin Injectipn Well Project Well Drilling a Construction Impact Areas Elhieit 2 Tgmpdary Tvell UnVruCOen Areas Exhibit B A+ • LL - _ x'./11 •nt _ - �+�I - Yr �� .� - � �, Z,' laity - _� „�- —•.,.� _a -. • t is ^+ !� ��•� � -' �� .!�1 � I t \ To. a a 4.�- LU Z > ._ W f Z G W4i. r s a Ott ! of 0 y y v E 2 e m r3 U� 1j ` g U blNbg 5 m 25C -33 7 U V M d L N •O ° (L m a a LL N O C O on v d 'c Y CL cc c c ate+ C d C .y A m ;o G �s d a .. G n m d d i ww T W 3 25C -34 Orange County Water District Mid Basin Centennial Park Injection Well Project Final Environmental Impact Report/ Environmental Assessment & CEQA -PLUS Federal Consultation Review (State Clearinghouse No. 2015061055) Prepared By Orange County Water District 18700 Ward Street Fountain Valley, CA 92708 Exhibit C April 2016 25C -35 Environmental Impact Report /Environmental Assessment Mid Basin Centennial Park Injection Well Project & CEQA -Plus Federal Consultation Review State Clearinghouse Number 2015061055 Prepared By Grange County Water District 18700 Ward Street Fountain 'Valley, CA 92708 Contact: Daniel Batt (714) 378-3256 DbottCocvrd.com In ,association With BonTerra /Psomas Urban Crossroads Vista Environmental Leighton Consulting Fusco Engineering 25C -36 Table of Contents Section Page SECTION 1.0 INTRODUCTION ..................................................... -- 1 -1 1.1 Purpose and Authority -- ............ 11111-1-1 1 1—- 111-1--- 1-1 1.2 CEQA-Plus Federal Consultation Review ......... ...... 1 -2 1.3 Pubrc Consultation ..... ....................... ......... 1-3 1.4 Effects Found Not Significant ..... ..................... ... 1-4 1.5 Effects Determined Potentially Significant .............................. ............. 1-4 1.6 Review of the Draft EIR/EA ....... ....................... ... ..... —'- 1 - 5 SECTION 2.0 PURPOSE AND NEED .............................. ............................2-1 21 Purpose .... ............................ .. ......... ......... .......... 2-1 2.2 Need ............... ............. ............2 -1 2.3 CEQA Objectives — .... ............ ....... .... 2-2 SECTION 3.0 PROJECT DESCRIPTION ......................... ............................3 -1 3,11 Background ................ ............ ................ ........... ............. 3-1 3.2 Project Area Setting.._ ........................ ............... ............... ........... - 3-1 33 Proposed Project — ........ ............ ........... ......... .............. 3-2 3.4 Long Term Maintenance --, -- ..................... ....... - 3-9 3.5 Project Design Features ..... ..... -- ................. ........... .... ................. ... — ... 3-10 3.6 Construction Phasing Plan----- ......... ............... ... ...... 3-13 37 Regulatory Permits and Approvals, ... ...................... ...... ---3-15 SECTION 4.0 ALTERNATIVES ................................................................ --4-1 4.1 NEPA Range of Alternatives ............... — .... ---- ....... ..... -- ..... — ................... 4-1 4.2 Alternatives Not Under, Review - ....... ................ ............ — ..... . ............. 4-1 4.3 Alternatives Under Further Review ..... ........... 4-2 4.4 CEQA Environmentally Superior Alternative ...... ........ ...... ............. 4-4 SECTION 5.0 AFFECTED ENVIRONMENT AND ENVIRONMENTAL CONSEQUENCES...,., ........... ...... ...... .................................. 5-1 5.1 AESTHETIC RESOURCES ....... ...... .......... .................................. ... — ..... . - 5-2 5.1.1 Affected Environment ..... - -- .. .......... .............. ....... .......... ..... 5-2 51.2 Regulatory Framework ....... ---- ... — ........... .................................. 5-3 5-1-3 Thresholds of Significance .... . ............ .. ... . ..... 5-3 Mid Basin Centennial Park ' i J(�p Project Final EIR Table of Contents 5.1.4 Environmental Consequences, .... ................. ... 5-9 5.2 AIR QUALITY....... ... - ...... — ........ ... ---- .... .......... ............. ..... 5-16 5.2.1 Affected Environment .............. ...................................................... 5 -16 5.2.2 Regulatory Framework., ........... ............. -- ................. ......... 5-17 523 Thresholds of Significance .................. ................... ................. ...... 5 -2® 5.2.4 Environmental Consequences ............ .--- ...... . .......... ................. 5 -21 5.3 BIOLOGICAL RESOURCES .......... ...... ...... ......... .... ... ........... ............... .... ... 5 -39 5.3.1 Affected Environment ................ ....................... .. ........................ ...5 -39 5.12 Regulatory Framework ......... ......................... ..... ...........................5 -51 5,33 Thresholds of Significance ...... ....... -- ....__....,,,...... ,..._,_... ... ..... ..5 -53 5.3.4 Environmental Consequences ... ... ................ ....... ..........................5 -54 5.4 CULTURAL RESOURCES .......... ................................................. ,.......... .... 5 -63 5.4.1 Affected Envi ronment...,.....__ ............................. ...........................5 -63 5.4.2 Regulatory Framework ......... .. .................... ......... ..... --- ... ........... 5 -67 5.4.3 Threshold of Significance ............. ............ ....................... .......... ...5 -69 5.4.4 Environmental Consequences .. ............... ...... ..... .......................... 5 -69 5.5 ENVIRONMENTAL JUSTICE ............. .............................. ...........................5 -78 5.5.1 Affected' Environment ........... ...................................... ............... ... .5 -78 5.5.2 Regulatory Framework ................ .................................................. 5 -79 5.5.3 Threshold of Significance ......... .. ..... .......................... ....... ............. 5 -79 5.5.4 Environmental Consequences . ............................... ...........................5.79 5.6 GEOLOGYI' SQILS ... . ...... ... ..... ........... ....... ....... .... ............ ....................... .... 5 -82 5,61 Affected Environment... .............. ..... ............ .. .... 5-82 5.62 Thresholds of Significance... ................... ......... 5-84 5.6.3 Environmental Consequences ... .................. ....... ........................... 5 -84 5.7 GREENHOUSE GAS EMISSIONS------ .... ........... ........... . ....... -- .... 5-89 5.7.1 Affected Environment......._ ................................. ...........................5 -89 5.7.2 Regulatory Framework ........ .... ..... ....... .......... ..... ... ........................ 5 -89 5.7.3 Thresholds of Significance ..... ............. ... ..... ............. ........... ....... ...5 -92 5,7.4 Environmental Consequences ................. ........... ........................... 5 -92 5.8 HYDROLOGYMATER QUALITY ...... .............................. ........... ..... --- ... .5 -98 t .a Mid Basin Centennial Park I18ie its Project Final EIR ii Table }fContents 5�8 1 Affected EnYioJo,nknt--'-.-....- ...... ..... .... ,-5-A8 5,8,2 Regulatory Framework .................. ........................... 5-100 57.3 Threshold of Si4DifiCaows...~--'-'---..-.. 5^108 57.4 Project Impacts ............ ...... ............................. 5-109 5�9 LAND USE/RECREATION ...... ...... --.-.------5,137 5.9.1 /\ffw{tmd EnYio3DmeRt-..... ...... '....................... ......... .,.5~137 5.9,2 Regulatory Fosrnavvndk...... .---.--'----. 5-137 5,9.3 Threshold 0f Significance ............... '-'-'--'---'5~138 5.9.4 Environmental C0nsoquenc88. ..... . ...... ........ ~. ........... ........ 5'138 5.10 NOISE .................... ................................. ....... ....................... 5'144 5,101 Affected Environment ............ ......... ...................... 5'144 5102 Regulatory Framework .................... ......... ............................ 5-147 5.10,3 ThroahoidG0fSi 0ifiC8Dca-_-'--'--,. 5^150 5]0.4 Environmental COn8eqUenneS.. .......................... -. .... .- ....... 5~160 5.11 TRANS P(}RT8]^L)N/TRY\FF|C.- .. ........ ^ .............. ............. .......... 5-217 5jI'1 Affected Environment ........ ....................................... '�5'217 5,11�2 Regulatory Fr8Ummm/ork................. ------.5-220 5.11�3 Thresholds 0f Significance ............................ ..F,222 5114 Environmental Consequences ................................ ... ........... -5^727 SECTION 6.0 CUMULATIVE IMPACTS ............. ~~-.."...........^.......°..^""=^^^.6~1 6.1 CEQA Analysis F|wgUirennants- .......... --............ ....... 'G~1 6.2 NEP8 Analysis Requirements ............ ....................... ................. G-1 6.3 Cumulative Analysis Methodology ............ ---H-1 84 Cumulative Impact Evaluation --- ....... .......-................ 5-J SECTION 7.0 OTHER CEQA CONSIDERATIONS ~..~~~~~....~.~.~~~.7~1 71 Growth Inducing |rnpacds-,........ ............................. ... . ...... . ... ..7~l 7.2 Significant Irreversible Changes ..... ....... ................................. ... ..-....7~2 7,3 Significant Unavoidable Significant Impacts ..... . .... ...................... ............... 7`3 SECTION 8.0 FEDERAL CONSULTATION REVIEW ,,,~^~^~,,^~_~,,,^,_. 8°1 8.1 Purpose ......................... .. ............................... --- ... . ...... ......... R~1 e^2 Project ....... .......... -,........ .......... ............. ...... ...�......8-1 Mid Basin Centennial Park I *Project Fin@|E|l iii Table of Contents 8.3 Long Term KXain(enmnce—... ....... ... � ........................ ,~,, 8-4 84 Construction Phasing P|on.... ... ..... ............ ............. ..................... 8^4 8.5 Federal Endangered Species Act /EGA\. Section 7 ............ .......................... 8`4 86 Magnuson-Stevens Fishery Conservation and Management Act, Essential Fish H@hii@i: ... .. ..... ................ ....... ... ....... ......... .-- ........... '—...-8-7 8.7 National Historic Preservation Act, Section 10G ...................... _ ........... ...... .8^8 89 Federal Clean /\ir............... ..... —^'--.----. ,--8-11 8.9 Coastal Zone Management Act ...... ....... ..................................... .......... �M-20 8A0 Coastal Barriers Resources Act .......... .... .—.---8'2U 811 Farmland Protection Policy Act. ............... ,.............. ............ ....... - ..... 8'21 812 Flood Plain Management .---. ...--.—^.G'21 813 Migratory BirdTreatv/\Ct ....--.—.,,..............—...---.8'22 814 Protection CfVV*t[aDdv,.... ......................... ........... ____ ......... ____ .... .-8-22 & 15 The Wild and Scenic Rivers A(�......................................... .... .... . ...... .~8^24 8.16 Safe Drinking Water Act, Sole Source Aquifer Protection .......... ..... ... . .... 8-25 8.17 Environmental Justice .... ........ . .... .... . ... . .......... ...... ....................... ..... 8~25 SECTION 9.8 LIST OF PREPARES ............................................................. 9°1 SECTION 10,0 REFERENCES .................................................... ,................ 10°1 ~ Mid B��inC�MhBn0iQlP�rk| Project ` FiDn|E|R iv n�) ToHmf� Contents w�D^��^s Table Page Table 1�|SYN(lP Comment Letters, .... .......... .............................. ''1^3 Table 2� Summary 8J Construction Activities ........... —............. —.—.................... 3-14 Table 3: Summary of Environmental Impacts ....... —. 4-5 Table 4: South Coast Air Basin Attainment Status ......................................... ........ '5'17 Table 5: Proposed Project Estimated Maximum Daily Construction Emissions (PVUndo/D@y) ....... ... ............ ........... .......... ........... ..... '5'23 Table K: Proposed Project [VO8liZ8dCVAstroctignErniasionS_---.'--...-..`�5-,24 Table 7: Proposed Project Fl8giOo@|Ooecdional ErnisSk}DC. ....... ....... ~.....~..,5-24 Table 8' Proposed P j8CtL000|(lpmrati7nalEnlissiO8s.—...—.'.---'--.—..5'25 Table 8:/A|urnaiive3 Estimated Regional Daily Construction Emissions |Pnunds/DayL,.5'25 Table 13: Proposed Project RegionolConstrVoti:nErDiSsiOos(T0ns/Yead......-5`32 Table 11� Proposed Project EoUnnated/\nOUalOperatiUAErniuSioDV/TVnS/Yeah -.5-32 Table 12:Proposed P iGeAen@|C0nfonnitv------,................. 5-33 Table 13: Alternative 3Regionai Construction Emissions (Tnnc/Yaor) ................. .'5-34 Table 1zLAlternative 3 General Conformity ................................ ~...~.......... .5~35 Table 15: Centennial Park Plant Vegetation Communities. 5-42 Table 16 Heritage Museum Plant List .......... ...... . ..... ............................................... 5~43 Table 17: List Cf Federal/State Special Status Plant Species ............. ......... ..._ ....... 5~48 Table i8-1 List 0fFederal Special Status YYiidlKeSpecies ....... ...... ..._ .... 5`48 Table 1g�Sunnno@ryCf Welland Porometern,... ............. .—............................... --- 5`98 Table 20: Cultural Resources Investigations Adjacent tnProject Area ... .......... 5~70 Table 21: Population Summary ....... ._ ............ ................. . ... ..... ...... ... _ ................ 5^78 Table 22: Ethnicity Summary ........ —........... ......................... ...... —.3-7G Table 23:Housing Summary .................. ... .. .................................. ,......... ....... _5~7y Table 24: Estimate Proposed Project ConGtnuotk)nGn38nhoU88Ga8EM)is&i00s .. � ....5-93 Table 25: Estimated Proposed Project (}pHratiOn@lGHG Emissions ........ ................. 5-B4 Table 2G: Estimate Alternative ] Construction Greenhouse Gas Emissions, ... .......... 5-94 Table 27: Estimated Alternative 3 Operational (;HGEmissions ..... 5-95 Table 28: Reaches [f the Santa Ana River .... _ ...... .... . .................................. ...... 5-104 Table 28: Beneficial Uses .... ...........--^.----'— ,.. ... ..5-1U5 Table 30: Beneficial Uses .... ,.~ ........ .—......—. 5-106 Table J1: Water Quality Objectives ..... ... ..... ........ ........ .............. ..... ... ....... 5-107 Table 32: Noise Levels and Human RespohSe......... ...... ...... ......... ___ ....... F-145 Table ]J� Existing Modeled Noise Levels ............ ............... ............. 5-l48 Table ]4i City of Santa Ana Municipal Code Exterior Noise Exandards-- _.. .... 5^149 Table 35� City rJ Santa Ana Municipal Code Interior Noise Standards ^...... ..... .5-149 Table 36:: Phase l Construction Day Time Noise [evels... .................................. 5-154 Table 3T Phase One Construction Activities Night Time Noise Levels ............... 5~155 Table 38: M0^5 Sound Wall Construction Noise Levels ....... ....... 5'157 Table 39: MA|'5 Conductor Casing Installation Noise L8Y8|S... ... —..................... 5-158 Table 40: &1B|~5 Borehole Drilling and Reaming Day Time Noise Levels .... ............ 5~159 Table 41�MB|'5 Borehole Drilling and Reanning Night Time Noise Levels ... ......... 5-1GO Mid Basin Centennial Park lruerl Is Project Finial EIR V Table nF Contents Table 42: MB|^5 Well Construction Day Time Noise Levels ....... ... .~.... --- ...... .. 5i62 Table 43: MB|`5 Well Construction Night Time Noise Levels . .................................. 5-163 Table 44: M[}|^3 Sound Wall Construction Noise levels. ..... —...... ...... .......... .... 5-1G4 Table 45: MB|-3 Conductor Casing Installation Noise Levels ... ... ... ...5-165 Table 46:KXB|-3 Borehole 8/iUino/RBarning and K1B|-5 Well Development Day Time NoiseLevels ..... .. .... .- .... ........... ............ .......................... ............ . 5^167 Table 4i~&1B|-3 Borehole Drilling/Reaming and MB|-5 Well Development Night Time NoiseLevels ........................... ... --- ....... ..................................... .... 5-168 Table 4& MB|`3 Well Construction Day Time Noise Levels ....... 5-169 Table 49. MBI-3 Well Construction Night Time Noise Levels. 5470 Table 50: MBI^2 Sound Walt Construction Noise levels ............ .—,..—,.`..5-172 Table 51:&1B|'Z Conductor Casing Installation Noise Levels ... .~-5-173 Tabie 52: MBI-2 Borehole Drilling and MBl-3 Well Development Day Time Noise Levels 5-174 Table 53: MB|~2 Borehole Drilling and MRI-3 Well Development Night Time Noise |nnpaC|s .......... ..................... ........ Table 54�MB|^2 Well Construction Day Time Noise Levels ....... .......... ......... ...... .5-l77 Table 551-MB|-7 Well Construction Night Time Noise Levels, .... ..............S~178 Table 58: MB|-4 Sound Wall Construction Noise Levels ... .---- ......... ............... S'179 Table 57: N1B|-4 Conductor Casing Installation Noise Levels ................................... 5-18O Table 58: MBI-4 Borehole Drilling and MBJ-2 Well Development Day Time Noise Leves-5-181 Table 59: M8|'4 Borehole Drilling and N8|-2 Well Development Night Time Noise levels ... 5-183 Table 60: MB|^4 Well Construction Day Time Noise Levels ...... . ... ........................ 5~18¢ Table 61: MG|~4 Well Construction Night llnna Noise Levels ........... .,...- 5~l8 5 Table 62: &18|-4V0e|l Development Day Time Noise Levels ..................................... 5'l88 Table 63: MBI-4UYel([]eve4opm8nt Night Time Noise Levels ........ ........ ........... — ... 5197 Table 84: Monitoring Well Sound Wall Construction Noise levels- .... ........ ............ � 5^189 Table G5: Monitoring Well Conductor Casing Installation Noise |evu|s. .......... ...... .5-18O Table 65: Monitoring Well Borehole Drilling Day Time Noise Levels ........................ 5-191 Table 67: Monitoring Well Borehole Drilling Night Time N6Se Levels ... .. .... .- .... .5-192 Table GD: Monitoring Well Construction Day Time Noise Levels ............................. 5'1q4 Table 69: Monitoring Well Construction Night Time Noise Levels ..... ..5~195 Table 7U: Monitoring Well Development Day Time Noise levels ...... .. ........... ..... 5-19§ Table 71: Monitoring Well Development Night Ti|MeNojso|ovals'_--- _--. - 5-197 Table 72: MB|-2 and MB|-4 Well Equipping Noise Levels ....... ............. ......... 5-198 Table 73: &1B|-3@N1MB|~5 Well Equipping, Paying and Skate Park Day Time Noise Levels......... ........................... --- ....... .. .............. ............... ............. 5'200 Table 74: Well Redevelopment Activities yWBi2./N8|-8,k18|'4.mm'5. Monitoring Well, . 5.201 Table 75: &1B|3 Well Development Day Time Noise levels,. .................................. 5-203 Table 76: K18|'3 Well Development Night Time Noise levels ... ................. ......... 5-204 Table 77: M8|`4 Borehole Drilling Day Time Noise leve|$—........ ...-5~705 Table 7;:KXB|-4 Borehole Drilling Night Time Noise Levels ... ............ ......... ........ 5-206 Table 79� MRI-4 Well Equipping [}GVTlUAe Noise levels ............. ...... .....5^2O7 Table 80, Operational Well Redevelop rnontActivities MB-2, KABI-3,MB|-4.K42}|-5. ~ ��M�B�iO��eUOi@UP@�I 8���Fin���|� vi Table 8l: Vibration Source Levels for Construction Equipment ................. _, ........ 5-215 Table 82: Vibration SOUrC9 Levels for Construction EnUipnnGDt..,_,..... ..--.5'716 Table 83� Existing Intersection Conditions -..... . ..... ....... ' .... ..... ,.6~21§ Table R4� Existing Roadways \/o|unneS/Lewe|0f Service ............ —....... ......... . 5'219 Table &5: Intersection Capacity Utilization (ICU} Level of Service CKte[|*. ............. 5-22O Table 86, Level of Service Criteria Roadway Segments_ ... .................. — ......... ... 5~22i Table 8T: Centennial Park Construction Traffic Trips .... ............. ..... .......... . ........ 5-22] Table U8� Existing Plus Project Traffic Intersection Analysis. .."~.~..—. .--,—.5-224 Table 80�Existing Plus Project Traf[uRo@dVv8y\/o|uU/e/CmpacbvAnnkesis—..~.5~224 Table 90: Parking Impacts during Well Drilling/Construction Activities and During Well Equipping Activities ..................... -------.5^234 Table 91 -Weekday Available Parking with Well Drilling and Well Construction Activiiies- .5~234 Table g2: Weekday Available Parking with Well Equipping Activities .. ... ............... 5-73S Table 93: Well Construction Phasing ............. ....—. ............................ .......... .5~235 Table 94: Summary Weekend Parking Impacts ... —........ ....... 5-737 Table $5: List A/ Cumulative Development Projects ...... .......................... 8^2 Table Q6� List VfFederal/State Special Status Plant Species ..................... .... 8_5 Table 8T: List VfFederal Special Status Wildlife Species ... .—....... ..~.x-6 Table &(t Cultural Resources I0Y8sLl ations Near Project /\r8a ....- —_-----..8'8 Table A0: Orange County Attainment Status ....................... .......... 8-13 Table 100: Proposed Project Localized Construction EOlk;SkJoS.... ~.—..8-14 T8U|810 1: Proposed Project Estimated MaximUOl Daily Construction Emissions /PmunUs/U@y\_,.. ......... ......... ............................................ ... ..... B~14 Table 102: Proposed Project ReoioM8i(}p*ratiVo»|ErDisSOnG.._ ........----'O'15 Tabie1u3i Proposed Project [0c8][)per@tioD@|FUoisS80G.....----_---.—.8-15 Table 104: Proposed Project Regional Construction Emissions (TQn8/Ye@r) ... ... ...8-15 Table 1U5: Proposed Project EstkO8t9d/\Houm|[)yeR8iV@Enli8Gio0S_...........M-l7 Table 10G: Proposed Project G8Meral[�onf)rDli(v,...............---'--`#-18 Table 107: Estimate Proposed Project C0osiructiOnGp88nhoVs8Ga8E80isSio0s . ... 8-19 Table 108: Estimated Proposed Project ()pmraUVDa|GHGEDlisSio8S."..—.'—''. 8-19 Table 109: Summary of Wetland PorenopgqrS ....... ......... ................................. ...... G~23 Mid Basin Centennial Park 1 29 d4l Project Final E|R vii Figure Pacle Figure 1: Regional Location Map .... ................................... ........ 3-3 Figure 2: Centennial Park/Heritage Museum Local Vicinity Map ... ........—........... 3-4 Figure 3: Proposed Project_, — .'—. .......... ................ 3-5 Figure 4: Shared Structure L@yoUtS-.. ...... ..... ... . ...... ........................... ....... ... -3-8 Figure 5: Parking Lot and Road Improvements- ..... .... --.... ......... ..... ........... 3~11 Figure 6: Heritage Museum Monitoring Well .--.... . ................ ,............. .3-17 Figure 7:Alternative 3 Reduced |Minnsih/.'—. ., ..... ........ ........ ............... 4'3 Figure 8: Alternative 4 Pipeline Design Alternative .............. .... ..................... Figure 9: Injection VV8||MBy-2&M8|^3[0catiooV.—,........—'--_.......—.S~4 Figure 1U: Injection VV0M6|^4& MB|'5 Locations ............ ....... ....... .... ......... ------- —,5`5 Fig�Vn911: Shared Recreation/Communications Structure 1 ........ ................ ......._5-6 Figure 12: Shared Recreation/Communication Structure 2 ................ .............. 5-T Figure 11 Heritage Museum Monitoring Well Location ........... ......... .... 5^R F|gQ[9 14: USGS Map...---.... ,,,,,,,_^___,.,,,.,,,~~5-40 Figure 15: Heritage Museum Vegetation Map ... ......... .— ................ . .................... §'44 Figure 16: Area of Potential Effects ......... ....... ..— -- ..... �5~71 Figure 17: Primary and Secondary Buffer Areas --. ........ ................. 6-117 Figure 18: Simulated Groundwater Levels with and without Proposed Mid-Basin Injection . 5-118 Figure 1@:Calculated Mounding from Proposed Mid-Basin Injection ........................ 5^120 Figure 20: Environmental Site Assessment Identified in Phase 1 within One-Mile of Mid- Basin In] eotiun .......... . ..... ......... ........ .... ..1-..~........ 5'122 Figure 21 � Wells within % Miles of Mid-Basin Injection ...... .... ......—. ........ ........ 5-123 Figure 22:FEMA Flood Hazard Area ..... ............ ....—.--'—,..... ...5-134 Figure 2J: Existing Project Ar8QNoimaL8ve|C.......—'_— '.. .''5'148 Figure 24:Proposed Sound Walls ........... ------ `............... ....... 5-152 Figure 25. Existing Traffic Volumes. ...... —,..........---'—...,-,.. 5,218 Figure 26:Godioe% High School Parking Facilities and Student Drop (lffS........... 5'231 Figure 2/:Tem/pVrarVP8rkinQInnpoCts.....----.....�.,.....---_—' ',- 5-232 Figure 28: Areas ¢f Temporary Parking Impacts ... ....,. ................ ............. .5-233 Figure 29: Cumulative Project [Ocation&1@p.. .... .................... ....... ... ......... ..... 6~4 .� Mid Basin Centennial Park I .~, P �ectFina<��I�� viii Table of Contents OTEMEZE Appendix A: Initial Study /Notice of Preparation /Comments Appendix 6: Air Quality and Greenhouse Gas Analysis,, Bonterra/Psomas, October 2015 Appendix C: Biological Assessment, Orange County Water District, July 2015 Appendix D: Cultural Resources Report, Bonterra/Psomas, August 2015 Appendix D1:Mang Ranch House and Kellogg House Historical Structure Evaluations Appendix E: Geological Report, Leighton Consulting, September 2015 Appendix F: Mid Basin Centennial Park Injection Wells Project Travel Time Analysis and Mounding, July 2015 Appendix FI:Environmental Site Assessment, EEI Geotechnical Environmental Solutions, May 2015 Appendix G: Centennial Park Non-Priority Project Water Quality Plan, Fusc© Engineering, November 2015 Appendix H: Noise Analysis, Vista Engineering, October 2015 Appendix 1: Traffic Report, Urban Crossroads, September 2!015 Mid Basin, Centennial Park I 1 Project Final EIR ix 964e Executive Summary *N *6111111 W wm�*a The Proposed Project involves the construction of four underground injection wells at Centennial Park and a below ground monitoring well at the Heritage MUSeUrn. The water supply to the injection wells would be recycled water from OCWD GWR System (GWRS) water treatment plant in Fountain Valley. An underground pipeline would! be constructed that would extend from the GWR System water supply pipeline along the Santa Ana River to Centennial Park where it would branch off to the four injection well sites. When in operation the four injection wells would be able to provide up to 12 million gallons per day (MGD) of additional groundwater recharge capacity to the Orange County Groundwater Basin, To monitor water quality in the area, a monitoring well has been proposed at the Heritage Museum. The Mid Basin Centennial Park Injection Well Project would involve six construction activities. These activities include; • Construction of Water Supply Pipeline • Construction of Back Flush Pipeline • Drilling and Construction of injection Wells at Centennial Park • Construction of Shared Recreation /Communication Structures • Repaving of Centennial Park Parking Lot • Site Improvements and Drilling and Construction of a Monitoring Well at Heritage Museum Project Objectives Below are the CEQA objectives for the Mid Basin Centennial Park Injection Well Project. Construct the Mid Basin Centennial Park Injection Well Project in location that can readily tie into the existing GWR System pipeline with minimal impacts to the environment. • Provide 12 MGD per day of additional groundwater recharge capacity to the Orange County Groundwater Basin. Maximize the use of GWR System as the local water supply to replenish the Orange County Groundwater Basin. Mid Basin Centennial Park In' i Weal's Project Final EIR ES-1 Y96 6 Executive Summary • Ensure that the operation of the Mid Basin Centennial Park Injection Well Project does not result in permanent loss of usable open space. Ensure that during construction and operation of the Mid Basin Centennial Park Injection Well Project safety conflicts with students from Godinez High School, Mitchell Child Development Center and from Centennial Education and Day Care Center are avoided. Ensure that the construction and operation of the Mid Basin Centennial Park Injection Well Project is compatible with park facilities. Project Design Features The following design features have been incorporated into the Mid Basin Centennial Park Injections Well Project. Noise Reduction To minimize noise impacts to the environment Sound walls would be proved around each well site. a) MBI-2 will have a 24-foot high temporary sound barrier on the northeast, southeast, and southwest sides of MBI-2 construction area, b) MBI-3 will have a 24-foot high temporary sound barrier on the north, east and west sides of MBI-3 construction area. c) MBI-4 will have a 24-foot high temporary sound barrier around the perimeter of MBI-4 construction area. d) MBI-5 will have a 24-foot high temporary sound barrier around the perimeter of MB 11-5 construction area. e) The Monitoring Well will have a 24-foot high temporary sound barrier around the perimeter of the Monitoring Well construction area and will also have an 8-foot high sound blanket located on the north and east sides of the air compressor. To minimize potential noise during the day when school would in session at Godinez High School, Mitchell Developmental School and Centennial Education Center, the construction of the water supply pipeline and back wash pipeline would Occur at night. • The Heritage Museum site improvements would occur when school is not in session at Mitchell Development School and Godinez High School Mid Basin Centennial Park IuLerl ,,jff_4Js Project Final EAR ES-2 Executive Summary • The construction of the monitoring well sound wall at the Heritage Museum would occur when school is not in session at Mitchell Development School and Godinez High School. • The construction of the MBI-5 Well sound wall would occur when school is not in session at Centennial Education Center and Godinez High School. • Paving activities at Centennial Park would be coordinated with Santa Ana Unified School District and Centennial Education Center to minimize noise impacts. • Well redevelopment maintenance activities for MBI-2, MBI-4 and the monitoring well would occur when school is not is session. Traffic CirculationlParking After well drilling, well construction and well development activities are completed the size of the work area will be reduced to free up available parking at Centennial Park. • To maintain safe circulation during the day along the Centennial Loop the segment of water supply and back flush pipelines within Centennial Park will constructed at night. To minimize potential construction traffic congestion within Centennial Park, all construction traffic entering Centennial Park would be required to utilize the Edinger Avenue/Mohawk Drive Entrance. Surface Water To help to conserve domestic water with the City Santa Ana, groundwater back flushed from OCWD injection wells would be used to maintain the water level in Centennial Park. To minimize surface water impacts a 10 foot wide by 200 foot long pervious sidewalk would be constructed between Centennial Park Parking Lot 5 to the proposed Shared recreation/Communication Structure 1 near the soccer field complex. Significant Unavoidable Adverse Impacts There are no significant unavoidable adverse impacts associated with the construction and operation of the Mid Basin Centennial Park Injection Well Project. Mid Basin Centennial Park Ina'6 4 eal s Project F R inal E ES-3 Z5- Executive Summary Project Impacts Table ES-1 provides a summary of project impacts, mitigation measures and determination on the level of impact after the incorporation of mitigation measures. Summary of Project Alternatives The Draft E I RJEA evaluates four alternatives to the project. Alternative 1: (No Federal Action/No Project) Under the No Federal Action/No Project Alternative the project would not be implemented. Centennial Park and the Heritage Museum would continue to operate as a community park and cultural resource learning center. Alternative 2: Centennial Park Four Injection Wells/Heritage Park Monitoring Well (Proposed Project) Under the Proposed Project, four injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park andd', a below ground monitoring well would be constructed at Heritage Museum. Under Alterative 2 an estimated 12 MGD per day of additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Basin, Alternative 3. Centennial Park Three Injection Wells/Heritage Park Monitoring Well (Reduced Intensity Alternative) Under Alterative 3, three injections wells and associated water supply and back flush, pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum, Under Alterative 3 an estimated 9 MGD of additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Basin, Alternative 4: Centennial Park Four Injection Wells/Heritage Park Monitoring Well with Alternative Pipeline Alignment (Pipeline Resign Alternative) Under Alterative 4, four injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum. Under Alternative 4, an alternative water supply pipeline alignment would be constructed that would extend through open space area in Centennial Park. The water supply pipeline would be the same approximate length and diameter as the water supply pipeline in the Prosed Project and would involve the same mix of construction equipment and construction activities, Under Alterative 4, an estimated 12 MGD of 1� Mid Basin Centennial Park Iri 49 'LecJ s Project Final EIR E5-4 256- Executive Summary additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Basin. Environmental Superior Alternative Based on the analysis provided in the EIR/EA, Alternative 3 the Reduced Intensity Alternative would be considered the environmentally superior alternative. Alternative 3 would result in marginally lower level of intensity impacts to air quality, greenhouse gas emission and noise, Alternative 2 would have highest level of ability of achieving the project objectives while resulting in no significant adverse impacts to the environment. Areas of Controversy There are no areas of controversy associated with the project that requires resolution. Public Review Comments Comments on the Draft EIRIEA for the Mid Basin Centennial Park Injection Well Project should be directed to: Daniel Batt Principal Planner Orange County Water District 18700 Ward Street Fountain Valley, CA 92708 dbott@ocwd.com I" e a Mid Basin Centennial Park II}' t' 'ill s Project Final EIR ES-5 (n cz ay U m 0 2� co E E :3 U) :3 0 0 x w LU (D r 0 m .5? > E F- E m E m LL IE CL E 0 a 0 E 0 CL -E to CL cr cr cr cr a v cr or U m 0 a) 0 C) w E 0 C) 0 0 0 0 0 0 0 v C 0 m m co m 0 E E E E E E E E 0 0 0 0 0 0 0 0 O a 2 2 o o E z z z z z z z z CL m 0 o m >1 U cn 0) m 0 > = z — 0 or 0 Id 909 M ty cn C 0 0 m CL m CL, "R R. 0 0 o iJ z < q z < a z < < M *,� U > m 0 u > 0 0 w c m N �Q 0 'D Q1 Z L> 0 '0 01 = = . 1 0 w U c CL u (D W y 0 0 ca U- D- (D 0 CL LL a o 0 0 M 0 0 0 U z D. 0. z a, C� Z 0) z 0 n. 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DL cr u cr or a' u cr N N COUDO 0 m m ra m 4ti N -W m m m m Z. z z 0 0 m 0 m 0 9) 0 a w E E E E E mm om E E E E c r- c c a cou a) w w c z C c a Q Q 0 0 7-v —M m 4-- m m 0 0 0 m 0) 0 0 0 0 0 z z z z z z z z 0 (U to b 0 > M > 4) 0 > 0 > > E C) 6 > C w 0 U w c m G9 LO CP y7 C w x c z < a (D < c KD c < 43 w 0 C a 0 V C m CL w cm u > 0 x 0) 0 U 0 W, C > 0 a) 0 w d) (D o Q C a) o . c '(D 0 0 .— w 0 r 0 .0 m LL a- CL 1� 0 n a) 1 0 m x , U� C, 0 'o w 2 CL 2 m c 1 w S�L c 0 r 04 m C4 4 N m m 0 0 N L3 C .2 0 0 w N 1? 4 0 0 w w u ;. �> .> 0 m u L 7�6 "�6 0 *0 — — — — CL o 0 E a M r 0 •(D 0 w d) w w .0 . 0— a' 0) Q w w 3 0 r CL < < < < z C, C. m < < I F- I . . .......... 25C-69 � N w .0 0 m E Y- 0 >1 E =3 ct) X ui uj 25C-70 U-) cv Lu m fu m Ll LL CL E E E M 0 0 0 75 m cv m t5 t5 5 m m eq m m CL CC a CL ow E E E E F= > > > > > > 0 0 0 0 0 gy C7 m 0 75 E .6 Cc m m as cu al (D M a) as KD 0 m C > cr u a a' u a- 0 'D ZC D z D D D D Cs > a w 0 w w w w 0 - m m m m m CU m m m a w m 0 07 w 0 at w as an w CL F= c E E E E E E E E E I c c z z c z c z c M 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 a CD o h 73 CD M > z z z z Z z z z z w 0 m a) E CL w E C) u 0 m a) > Cu a) > a) m 0 a) CD m La > > m W > CZ EL C= M D- E — 0) c c z c 0 > z < M 0 0 u GI tl1 CD — < 7 c CL = U) — m 0 0 uj 0 (D c a CD , 0 0) .— — 0 E >1 c 2 cn u CL < m .0 CL r - E n- 0 a) a) a) > a w .0 — oj > o w AA a "a 0 C U w w 0 U 0 In aY r- a U n , C a, U) 0 0 0 0 LL a x 0 IL CJ. > >1 o 0 w a ch a m m C, CL su w Z — CL cf a- a 0 z �CL 0 z 0- m 0 0 a , m k 0) c N n 0 OL 2 w 0 0 uJ > > > 0 m q m c( m c in u c a m cm a r r di u — I — — CL M M �m cr 0 0 m Tc E a < r3 0 < < ca 25C-70 U-) cv Lu m C: 0 m fd 0L E 0 >1 E E :3 U) CD a) x LU Cf) w 25C-71 151 B iff LL us QP as Gtl as C: C3 .-w 09., Ll E w cu C LL m by > 0 cr C7 LU w m cn 0 S9 m cu o CL w 5) CL ma 77 -0 'a D— rh C w It 01— cm EL .2 CL E Z ❑ cc c LLJ © c cr a) CD M 0 w CD 'E U) �z 0 't 0 ui 0 0 0) 0 25C-71 151 B iff LL us QP as Gtl as C: C3 .-w 09., CL E 4- 0 E E :3 a) x W LU 25C-72 da u , ) ui Ll E 0 > O (D W CF u m m w m m 0 d 0 E w o (D 0 ca > > a) Ld o LLJ C CL 0 a) i= 0 u ol z Q) a C7 c a- 0 uj 0 C V U) 0 C 0 E 4J t!J p to C34 > > < > < 0) 0 0 0 77 > > a LL a G > 'D m a) 0 z IL c m c 0 c M N 0- �a 2: LU CD w 'r� E w 0 2 CL 75 a > > > —2 , 0 0 yy® > C C C1• Q > 00 CL 'D 0 00 6 Ow E C) 7 0, 25C-72 da u , ) ui crr U) C: 0 cc 0) co U) co a- E 4— 0 cc E E Vd m X w Ch W co 25C-73 co CN u . ) ui U m V 0 tiff SO (D > < LLJ m r c U cn M E Z C7 m < 75 a) m 0 , E 0 W 0 0 aacs S 0 CL > > ci > 0 eL 2 < CL s 0 M ww 01 8) 0) m Q — I d) m a 12 zo CL — 0 f — c r - — 0 C a) 0 m d) LL o CL 0 UJ D a LU 15 w — 0 u C, 0 0 > a U m > , 0 �o -- — N 't Lu I G_ *— 0 0 cc M E 0 a 75 E E C: 0 o = = = 0 w (D '0 w E '0 0 0 m 3 — — E = E 0 E CL 0 Ko < < Fn < 25C-73 co CN u . ) ui Section 1 SECTION 1.0 INTRODUCTION 1.1 Purpose and Authority The California Environmental Quality Act (CEQA) and the CEQA Guidelines strongly encourage State and local agencies to prepare a combined document (i.e., one document which satisfies both NEPA and CEQA) for projects where time is of the essence (Section 21083,6, Guidelines Section 15222), The NEPA regulations similarly encourage Federal agencies to cooperate with local agencies "to the fullest extent possible to reduce duplication between NEPA and comparable State and local requirements," including the preparation of a joint document (40 GFR 1506.2). A joint document cannot be prepared solely by a State or local agency; it must include direct Federal agency involvement (40 CFR 1506.2). Pursuant to the National Environmental Poiicy Act (NEPA) and the California Environmental Quality Act (CEQA), the United States National Park Service and the Orange County Water District (OCW D) have prepared a joint Initial Study-Environmental Impact Report/Environmental Assessment (EIR/EA) for the proposed Mid Basin Centennial Park Injection Well Project. This EIR/EA has been prepared in accordance with the requirements of the National Environmental Policy Act (NEPA) [42 United States Code {USC) 4341 at seq.], and in conformance with the Council for Environmental Quality (CEQ) Guidelines and the National Park Service NEPA implementing regulations. The document also fulfils the requirements of the California Environmental Quality Act (CEQA) [California Public Resources Code {PRC) 21000 et seq], and the State CEQA Guidelines [California Administrative Code (CAC) 15000 et seq] and the Orange County Water District (OCWD) CEQA Procedures. Section 1508.16 of the NEPA Guidelines defines the lead agency as, "the agency or agencies preparing or having taken primary responsibility for preparing the environmental impact assessment." Section 21067 of the CEQA Guidelines defines the lead agency as, "the public agency which has the principal responsibility for carrying out or approving a project which may have a significant effect upon the environment," The National Park Service is the NEPA lead agency and the OCWD is the CEQA lead agency. Under NEPA, an EA must briefly provide sufficient evidence and analysis for determining whether to prepare an Environmental Impact Statement (EIS) or a Finding of No Significant Impact (FONSI); aid an agency's compliance with NEPA when no environmental impact statement is necessary; or facilitate preparation of a statement when one is necessary. The EA is required to include a brief discussion of the need for the proposal, alternatives as required by section Mid Basin Centennial Park Project Final EIR 1-1 W1111 4 Section 1 102(2) (E) of the NEPA Guidelines, the environmental impacts of the proposed action and alternatives, and a listing of agencies and persons consulted. Under CEQA, an EIR Must describe all significant effects on the environment that may be caused by the proposed project; significant effects that cannot be avoided, any irreversible effects; proposed mitigation measures; project alternatives; and growth-inducing impacts. This document meets those CEQA requirements. The Draft EIR/EA is intended to serve an informational document for public agency decision-makers and the public, allowing decisions to be informed regarding objectives and components associated with the implementation of the Mid Basin Centennial Park Injection Well Project, as well as to identify feasible mitigation measures and alternatives that may be adopted to reduce or eliminate these impacts, The Draft EIR/EA analyzes the environmental effects of the Mid Basin Centennial Park Injection Well Project to the degree of specificity appropriate to the current proposed actions, as required by CEQA and NEPA. The analysis considers the issues associated with the implementation of the project to determine the potential short-term and long-term effects. Additionally, Draft EIR /EA discusses both the direct and indirect impacts associated with the project and cumulative impacts associated with planned and for-seeable future development within the project area. 1.2 CEQA-Plluis Federal Consultation Review The U.S. Environmental Protection Agency sponsors the State Revolving Fund (SRF) Loan Program to provide funding for construction of public-owned treatment facilities and water reclamation projects. This funding for capital for wastewater treatment and water recycling facilities is authorized Linder the Clean Water Act. As a water recycling project, the proposed Mid Basin Centennial Park Injection Well Project is eligible for SRF funding. In order to comply with requirements of the SRF Loan Program, which is administered by State Water Resources Control Board in California, a CEQA document must fulfill additional requirements known as CEQA-Plus. The CEQA -Plus requirements have been established by the U.S. Environmental Protection Agency and are intended to supplement the CEQA Guidelines with specific requirements for environmental documents acceptable to the State Water Resources Control Board when reviewing applications for SRF loans, Federal consultation must be completed before an SRF funding agreement can be approved by the State Water Resources Control Board, A CEQA-Plus Federal Consultation Review analysis has been incorporated into the EIR/EA to meet the State Revolving Loan Mid Basin Centennial Park I It �Pl Project Final EIR 1-2 Section 1 Program environmental review requirements. The CEQA-Plus Federal Consultation Review analysis is presented in Section 8 of the EIR/EA. 1.3 Public Consultation The scope of this Draft EIR/EA includes issues identified by OCWD during preparation of the Notice of Preparation of EI!R (NOP) and Initial Study (IS) for the Project, and issues raised by other agencies and the public in response to the IS/NOP. The IS/NOP was circulated for the mandated 30-day public review period from May 28, 2014 to June 28, 2D14. The NOP was circulated to various Federal, State, regional and local governmental agencies and other interested parties who were contacted to inform them of the Project and to solilcit comments regarding project implementation. Comment letters that were received during the review period are summarized below in Table 1, The IS/NOP, along with comment letters received, are included in Appendix A of this Draft EIR/EA. Table 1: I'SINOP Comment Letters AgencylOrganization Key Issues Identified Location In D51WEA Where Addressed California State Acknowledgment OCWD complied Section 1.4 Clearinghouse with Notice of Preparation public review requirement County of Orange Long term water quality impacts Section 5.8 Impact HVVQ-5 Changes to existing drainage patterns Section 5.8 Impact HVVQ-3 Erosion /Siltation Impacts Section 5.8 Impact HWQ-4 Impacts to Edinger Avenue Bridge Section 5.8 Impact HVVQ-7 Impacts to County Right-of —Way Mitigation Measures HWQ - 1, HWQ-4, IHWQ-5 California Department No Comment Appendix A Transportation Rancho Santiago Loss of parking spaces from repaving Section 3,3 Repaving of Community College District Centennial Park parking lot Compliance with Noise Standards Section 5.10.4 Student Construction Safety Conflicts Section 5.11 Impact T -3 Santa Ana Unified School Impacts to wetland site Section 5.3 Impact 1510-3 District City of Fountain Valley Travel Time Impact Analysis Section 7,74 Impact HVVQ-2 Mid Basin Centennial Park 11 All Project Final EIR 1-3 Ift.01 rydidw_U Section 1 1.4 Effects Found Not Significant In accordance with Section 15063 (c) of the CEQA guidelines, based on the evaluations and findings in the IS/NOP certain environmental issues from the CEQA Checklist were determined to be less than significant or less than significant with the incorporation of mitigation measures and therefore, do not require further evaluation in this Draft EIR/EA, The IS/NOP located in Appendix A of this DEIR provides the evalluations and findings that determined these issues to be less than significant or less than significant with the incorporation of mitigation measures. The issues from the CEQA Checklist determined to be less than significant include: • Agriculture /Forest Resources • Hazards/Hazard. Materials • Mineral Resources • Population/Housing • Public Services • Utilities 1.5 Effects Determined Potentially Significant Based on the findings of the IS/NOP, a determination was made that a Draft EIR/EA is required to address the potentially significant environmental effects of the Project. The scope of this Draft EiRiEA includes issues identified by the OCWD during the preparation of the ISINOP for the Project, as well as environmental issues identified by agencies (see Table 1) and the public in response to the IS/NOP. The following issues from the CEQA Checklist were determined to be potentially significant and are addressed in this Draft EIR/EA: • Air QualIty • Biological Resources • Cultural Resources • Environmental Justice • Greenhouse Gas Emissions • Geology/Soils • Hydrology and Water Quality • Land Use/Recreation • Noise • Traffic/Transportation Mid Basin Centennial Park I t I Yll Project Final EiR 1-4 Section I 1.6 Review of the Draft EIRIEA Upon completion of this Draft EiRIEA, the OCWD has filed a Notice of Completion (NOC) with the State Office of Planning and Research to begin the public review period (Public Resources Code, Section 21161). Concurrent with the NOC, the OCWD distributed a Notice of Availability (NOA) in accordance with 15087 of the CEQA Guidelines. This Draft EIRIEA has been distributed to responsible and trustee agencies, other affected agencies, surrounding cities and municipalities, and all interested parties requesting a copy of this Draft EIR/EA in accordance with Public Resources Code 21092(b)(3). During the public review period, this Draft EIR/EA, including the technical appendices, will be available for review at the following location: Orange County Water District 18700 Ward Street Fountain Valley, CA 92708 Agencies, organizations, and interested parties not previously contacted, or who did not respond to the NOP, currently have the opportunity to comment on this Draft EIR/EA during the 45-day public review period. Written comments on this Draft EIR/EA should be addressed to: Daniel Bott, Principal Planner Orange County Water District 18700 Ward Street Fountain Valley, CA 92728 Comments may also be sent by email to Daniel Bott at: Email: dbo.tt(@ocwd,com Mid Basin Centennial Park I "f9illf-I 9 Project Final EIR 1-5 Section 2 2.1 Purpose The purpose of the Mid Basin Centennial Park Injection Well Project is to replenish the Orange County Groundwater Basin with advanced treated recycled water from the Orange County Water District Groundwater Replenishment System (GWR System), 2.2 Need The Orange County Water District (OCWD) is the manager of the Orange County Groundwater Basin, The Orange County Groundwater Basin provides underground water Supplies to 23 cities and over 2.3 million persons in Orange County, California. Within OCWD service boundaries over 65 percent of the domestic water needs is provided by groundwater- The remaining water is provided from imported water supplies from northern California and from the Colorado River, Due to the extremely dry conditions, the Orange County Groundwater Basin has experienced substantial overdraft increases as high as up to 320,000 acre-feet. The maximum overdraft of the basin is 500,000 acre-feet. Without additional local Supplies, the Orange County Groundwater Basin would approach maximum overdraft, requiring reductions in groundwater withdrawals and placing additional strain on an already ,over used imported water system. Additionally, because of prolonged drought conditions in California, imported water supplies from the State Water Project are at an all-time low to help replenish the Orange County Groundwater Basin. As a result OCWD must maximize local water supplies to help replenish the groundwater basin. To replenish the Orange County Groundwater Basin with local water supplies, Orange County Water District is proposing to use advanced recycled water from its Groundwater Replenishment System (GWR System) as the local water source for its proposed Mid Basin Centennial Park Injection Well Project. The GWR System is a joint water reclamation project with OCWD and the Orange County Sanitation District that takes secondary treated wastewater and through advancement treatment treats the water to exceed drinking water standards. The Mid Basin Centennial Park Injection Well Project proposes the construction of four injection wells that would inject up to 12 MGD of GWRS water into the groundwater basin. By utilizing the GWRS as a local water source for the Mid Basin Centennial Park Injection Well Project, OCWD would' have to rely as heavily on imported supplies to help to replenish the Orange County Groundwater Basin. ur Mid Basin Centennial Park I(JL'5EUt' =11 Project Final EIR 2-1 26N Section 2 2.3 CEQA Objectives Section 15124 of the CEQA Guidelines requires the Lead Agency to identify project objectives to help identify a reasonable range of alternatives to the project to evaluate in an EIR and to aid decision makers in preparing findings or a statement of overriding considerations iif necessary. Below are the CEQA objectives for the Mid Basin Centennial Park Injection Well Project. • Construct the Mid Basin Centennial Park Injection Well Project in location that can readily tie into the existing GWR System pipeline with minimal adverse impacts to the environment. • Provide 12 MGD of additional groundwater recharge capacity to the Orange County Groundwater Basin, • Maximize the use of GWR System as the local Water Supply to replenish the Orange County Groundwater Basin. • Ensure that the operation of the Mid Basin Centennial Park Injection Well Project does not result in permanent loss of usable open space. • Ensure that during construction and operation of the Mid Basin Centennial Park Injection Well Project potential safety conflicts with students from Godriez, High School, Mitchell Child Development Center and from Centennial Education and Day Care Center are avoided. • Ensure that the construction and operation of the Mid Basin Centennial Park Injection Well Project is compatible with park facilities. Mid Basin Centennial Park 1 "'16' Z 5 -96 Project Final EIR 2-2 Section 3 3.1 Background To help meet Orange County's groundwater needs OCWD is proposing to construct and operate four injection wells at Centennial Park and a single monitoring well at the Heritage Museum. The proposed injection wells would inject recycled water from the OCWD Groundwater Replenishment System (GWR System) into the principal aquifer. The GWR System is a joint water reclamation project with OCWD and the Orange County Sanitation District (OCSD). The GWR System takes secondary treated wastewater and through advancement treatment treats the water to exceed drinking water standards. By injecting GWR System into the principal aquifer, OCWID would be able to provide additional local sources of water to replenish the Orange County Groundwater Basin, Presently, a demonstration Mid Basin Injection Well (MBI-1) is in operation at the northwest intersection of Edinger Avenue and the Santa Ana River in the City of Fountain Valley. The purpose of the MBI-1 demonstration well is to pilot the Mid Basin Injection well technologies, operational strategies and monitor the water quality impacts resulting from the introduction of GWRS water directly into the principal aquifer. The data gathered from MBI-1 demonstration well would be used to guide final operation strategies and design plans for the Centennial Park Mid Basin Injection Well Project. 3.2 Project Area Setting Regional Setting As shown in Figure 1, Centennial Park and the Heritage Museum are located in the southwestern area of the City of Santa Ana, Orange County, California. The primary regional access to both sites would be Interstate 405 via the Fairview Street exit, The local access to the both sites would be provided from Fairview Street, Edinger Avenue and Harvard Street. Local Setting Centennial Park Centennial Park is an 87 acre community park located at 3000 West Edinger Avenue. As shown in Figure 2 the park site is bounded by the Santa Ana River to the west, Fairview Road and the Greenville Banning Flood Control Channel to the east, Edinger Avenue to the north and Godinez High School to the south. Centennial Park features a combination of active and passive recreational uses that are centered on a man-made lake. A loop road extends along the perimeter of the park site providing access to various locations in the park including several parking areas- Additionally, included within the park boundaries is the Santa Ana Mid Basin Centennial Park I fiall I Project Final EIR 3-1 Section 3 College Centennial Education Center and Child Developnient Center which provides adult education classes, pre-school age classes, and day care facilities. Heritage Museum The Heritage Museum Is a cultural and natural history center located at 3101 West Harvard Street. As shown in Figure 2 the Heritage Museum site is bounded by Godinez High School to the north and west, Mitchell Child Development Center to the east, and Harvard Street to the south. The Heritage Museum contains a historic plaza featuring several buildings from the 1890-s, extensive flora gardens, citrus groves, agriculture demonstration garden area and a restored wetland area, 3.3 Proposed Project As shown in Figure 3 the Proposed Project involves the construction and operation of four underground injection wells at Centennial Park and a below ground monitoring well at the Heritage Museum. The water supply to the injection wells would be recycled water from OCWD GWR System water treatment plant in Fountain Valley, An underground pipeline would be constructed that would extend from the GWR System water supply pipeline along the Santa Aria River to Centennial Park where it would branch off to the four injection well sites. When in operation the four injection wells would be able to provide up to 12 MGD of additional groundwater recharge capacity to the Orange County Groundwater Basin. To monitor water quality in the area, a monitoring well has been proposed at the Heritage Museum,. The Centennial Park Injection Well Project would involve six construction activities. These activities include; • Construction of Water Supply Pipeline • Construction of Back Flush Pipeline • Drilling and Construction of Injection Wells at Centennial Park • Construction of Shared RecreatiDn/Commuriication Structures • Repaving of Centennial Park Parking Lot • Site Improvements and Drilling and Construction of a Monitoring Well at Heritage Museum Mid Basin Centennial Park I t' t Project Final EIR 3-2 Section 3 Figure 1: Regional Location Map r" LQn Mid Basin Centennial Park 1 25 t C-93 Project Final EIR 3-3 Section 3 Figure 2: Centennial ParklHeritage Museum Local Vicinity Map Mid Basin Centennial Park Iru"eci 7 Project Final EIRE 3-4 Z56N Section 3 Figure 3: Proposed Project Mid Basin Centennial Park I 6 yp, I P roject ina F" I EIR 3-5 Section 3 Construction of Water Supply Pipeline Each of the four injection wells would require a pipeline connection to deliver water to the injection well. The source of the water for the injection wells would be the OCWD GWR System pipeline located in the western levee of the Santa Ana River. To access and provide connection to the GRW System pipeline, the western levee would have to be excavated to expose the pipeline. From the GWRS pipeline, the water supply pipeline would extend along the north side nose piers of the Edinger Avenue Bridge, Once across the bridge the pipeline would be placed underground on the eastern levee of the Santa Ana River and then would be extended underground along the south side of Edinger Avenue to the entrance to Centennial Park. Within Centennial Park the water supply pipeline would extend along the alignment of Centennial Loop Road to the injection well sites. The water supply pipeline would be approximately 5,500 feet in length and would have diameters ranging from 36 inches at its connection with GWR System pipeline to 14 inches along the loop road in Centennial Park, The portion of the water supply line within Centennial Park would be constructed at night to maintain access during the day at Centennial Park. Construction of Back Flush Pipeline In order to maintain injection efficiency and longevity of the injections wells, periodic back flushing operations would be necessary. To help conserve water, the water back flushed from the injection wells would be discharged into Centennial Lake with a secondary discharge option into the Greenville Banning Flood Control Channel. The back flush pipeline to Centennial Lake would tie into an existing wet well that was formerly used to irrigate landscape at Centennial Park. The back flush pipeline to Greenville Banning Flood Control Channel would discharge into an existing gutter catch basin and then drain, into the Greenville Banning Flood Control Channel. No modifications to the Greenville Banning Flood Control Chanel Would occur, As shown in Figure 3 the back flush pipeline would generally follow the same alignment of the water supply pipeline. The back flush pipeline would be approximately 4,616 feet in length with a diameter of 18 inches. The back flush pipeline would be constructed at night to maintain access during the day at Centennial Park. Drilling and Construction of Injection Wells at Centennial Park A total of four injection wells have been proposed in Centennial Park. The proposed injection wells would operate 24 hours a day injecting water into the groundwater basin at depth of approximately 1,200 feet. The injection wells would be enclosed and would operate in underground vaults under existing parking areas at Centennial Park, A 5 foot by 5 foot metal cover would be Mid Basin Centennial Park IrL'pa5 te' Project Final EIR 3-6 2 _ gig Section 3 constructed at the finished grade of the parking lot to provide access into each vault. Each vault would be approximately 260 square feet and would be excavated to a depth of 15 feet below the ground surface. The drilling activities for each injection Well Would require continuous 24 hour drilling over a three month period. During the well drilling phase, a work area averaging about 12,200 square feet would be needed for each well site. To minimize the temporary loss of parking area, after the well drilling activities are completed the work area would be reduced to 3,000 square feet to equip each well. A total of three moths would be needed to equip each well after well drilling is completed. Construction of Shared Recreation /Communication Structures Power and communication would be required at each injection welll. The electrical, communication and process control equipment would be shared in two above ground structures that would function as utility rooms for OCWD and public restroom/changing rooms and a park office for Centennial Park staff. The configuration of the two shared recreation /communication structures is shown in Figure 4. The first shared recreation/communication structure would be located near the northwest corner of Centennial Park adjacent to the soccer fields. A 1,050 square foot shared structure would be built that would contain 220 square foot public restrooms, 550 square foot changing area for soccer teams and a 280 square foot utility room for OCWD, The proposed shared structure would be constructed on an existing asphalt area adjacent to the soccer field complex. A 200 foot long, 10 foot wide American Disabilities Act approved pervious surface sidewalk would be constructed to provide pedestrian access from the Centennial Park parking lot to the soccer field and to the Santa Ana River Bike Trail. The second shared recreation/communication structure would be located near the Centennial Park Skate Park. An existing 576 square foot restroom structure would be demolished and replaced with a 596 square foot shared structure. The shared structure would contain 212 square foot public restroom, 178 square foot park office and 206 square foot utility room. A concrete walkway ranging in size from 3 feet to 10 feet would be provided around the perimeter of the shared structure. The park office would be oriented towards the skate park to allow Centennial Park staff to supervise the activities at the skate park. Additionally, to increase the defensibility of the skate park an existing 3 foot high fence around the skate park would be replaced with a new 8 foot high fence and a surveillance camera would be installed and wired to the park office. Mid Basin Centennial Park 1 t' 6 g4l Project Final Elf" 3-7 A _0 I Section 3 Figure 4: Shared Structure Layouts Mid Basin Centennial Park I AUM Project Final EIR 3-8 Section 3 Repaving of Centennial Park Parking Lot Once the construction activities are completed, the parking areas and roadways at Centennial Park would be repaved. As shown in Figure 5 a total of 9.64 acres of area would be repaved. The paving activity would include the grinding and removal of two inches of existing asphalt, replacing the depth with new asphalt, and restoring the parking and roadway painting and markings. The repaving of the parking lot would not result in the loss of any existing parking spaces. Prior to the start of paving OCWD would coordinate with Santa Ana College Centennial Education Center on the appropriate time of the year to repave the parking lot. Construction of Monitoring Well A bellow ground monitoring well would be constructed within an existing dirt parking area at the Heritage Museum site. The monitoring well would be housed in an underground vault with a 2' x 3' metal cover and 6'x 7' concrete apron. The concrete apron WOUd be incorporated into the existing parking area. The monitoring well! would operate 24 hours per day monitoring water levels and water quality. However, unlike injection wells the monitoring well would sit idle, until the time it is sampled or maintained. As shown in Figure 6 a 5,000 square foot area would be needed to construct, operate and maintain the monitoring well). The proposed well would be a nested monitoring well and Would be drilled by direct mud rotary drilling equipment and would occur 24 hours a day over a two week period and 12 hours day over another two week period. After the well construction is completed the existing dirt parking lot would be resurfaced with decomposed granite. Additionally, as part of site improvements at Heritage Museum, an existing irrigation system to the demonstrate garden would be replaced and interpretive education kiosks would be installed. The long term operation of the monitoring well would include water level monitoring and water quality sampling. The monitoring activities would occur during the day generally on a monthly to quarterly basis. 3,.4 Long Term Maintenance Injection Wells The injection wells are routinely redeveloped every two to five years to remove accumulated sediments and microbiological build-up within the well casings to restore the well capacity to operate at their maximum injection capacity. As part of the redevelopment the injection well would be back washed. The discharging of the well water associated with redevelopment activities would be conducted in accordance with NPDES Permit requirements. Typical injection well redevelopment activities would involve field equipment such as outrigger crane, Mid Basin Centennial Park I 1 Project Final EIR 3-9 9U -9 Section 3 air compressor, flatbed truck and crew of up to four employees, The redevelopment of an injection, well Could take up to two weeks and would occur during the day, Monitoring Wells Every two to five years OCWD assesses the condition of monitoring wells to determine if they need redevelopment. The redevelopment activities would be similar to an injection well- 3.5 Project Design Features The following design features have been incorporated into the Mid Basin Centennial Park Injections Well Project. Noise Reduction • To minimize noise impacts to the environment sound walls would be proved around each well site. a) MBI-2 will have a 24-foot high temporary sound barrier on the northeast, southeast, and southwest sides of MBI-2 construction area. b) MBI-3 will have a 24-foot high temporary sound barrier on the north, east and west sides of MBI-3 construction area, c) MBI-4 will have a 24-foot high temporary sound barrier around the perimeter of MBI-4 construction area. d) MBI-5 will have a 24-foot high temporary sound barrier around the perimeter of MB 1-5 construction area. e) The Monitoring Well will have a 24-foot high temporary sound barrier around the perimeter of the Monitoring Well construction area and will also have an 8-foot high sound blanket located on the north and east sides of the air compressor. • To minimize potential noise during the day when school would in session at Godinez High School, Mitchell Developmental School and Centennial Education Center, the construction of the water supply pipeline and back wash pipeline Would occur at night. • The Heritage Museum, site improvements would occur when school is not in session at Mitchell Development School and Godinez High School, • The construction of the monitoring well sound wall at the Heritage Museum would Occur when school is not in session at Mitchell Development School and Godinez High School. Mid Basin Centennial Park lru'patipn §d Project Final EIR 3-10 Section 3 Figure 5: Parking Lot and Road Improvements Mid Basin Centennial Park I� ?aty 841 Project Final EIR 3-11 47 1 Section 3 Figure 6.- Heritage Museum Monitoring Well Mid Basin Centennial Park 1 11 Project Final EIR 3-12 Section 3 The construction of the MBI-5 Well sound wall would occur when school is not in session at Centennial Education Center and Godinez High School. • Paving activities at Centennial Park Would be coordinated with Santa Ana Unified School District and Centennial Education Center to minimize noise impacts. • Well redevelopment maintenance activities for MBl-2, MBI-4 and the monitoring well would Occur when school is not is session. Traffic CirculationlParking • After well drilling, well construction and well development activities are completed the size of the work area will be reduced to free up available parking at Centennial Park. To maintain safe circulation during the day along the Centennial Loop the segment of water supply and back flush pipelines within Centennial Park will constructed at night. To minimize potential construction traffic congestion within Centennial Park, all construction traffic entering Centennial Park would be required to utilize the Edinger Avenue /Mohawk Drive Entrance, r '*IFF§R=FA • To help to conserve domestic water with the City Santa Ana, groundwater back flushed from OCWD injection would be used to maintain water level 1117900OMMIM. 111110.53 To minimize surface water impacts a 10 foot wide by 200 foot long pervious sidewalk would be constructed between Centennial Park Parking Lot 5 to the proposed Shared recreation/Communication Structure 1 near the soccer field complex. 3.6 Construction Phasing Plan The Proposed Project is estimated to take 14 months of active construction over a 24 to 30 month period and is broken into 8 construction phases. Construction operations are expected to start in early 2017 and conclude in 2019. A summary of the construction activities and the times when they would occur are shown in Table 2. Mid Basin Centennial Park I I Project Final EIR 3-13 wm Section 3 Table 2: Summary of Construction Activities phase Activity Description Equipment Duration, (days) Location Phase Duration (days) Supply Pipeline on Bridge and GWRS Tie-In *45 Pipelines, Structures, Heritage 125 SUpply Pipeline in Edinger Supply & Backflush Pipelines in Park 20 51 Shared Structure ConStrUction '125 Heritage Site Improvements *14 `Shanad Structure Censiruch ©n occurs concurrent %ith Putelfirle, COPSIFOCrOq P,pulinp, orb Nndge G*RS OcCUrs concurfart with Other Nipt-finis, Constfuctina. i Site riproverrepts Occurs, concurreN wilti Shared Structures II Sound Panel Installation and Removal 8 MBI-5: Drill 28 Conductor Casing Installation I Borehole Drillinq and Reaming 14 Well Construction 5 III Sound Panel Installation and Removal Conductor Casing Installation 8 1 MBI-3: Drill 28 Borehole Drilling and Reaming 14 Well Construction 5 Well Development *14 MBI-5: Develop • Well Develo pment occurs concurrent with Borehole Drilling and Reamin g IV Sound Panel Installation and Removal Conductor Casin Installs @ion 8 1 MBI-2: Drill 28 Borehole Drilling and Reaming 14 Well Construction 5 Well Development *14 MBI-37 Develop • Well Develo pment occurs concurrent with Borehole Drilling and Reamin g V Sound Panel Installation and Removal a MBI-4: Drill 28 Conductor Casing Installation 1 Borehole Drilling and Reaming 14 Well Construction 5 Well Development 14 flop Well Dsvela ment occurs concurrent with Borehole Drilling and Reaming VI Well Development 14 MBI-4, Develo 14 VII Sound Panel Installation, and Removal Conductor Casinginstallation B Monitoring Well 36 Mid Basin Centennial Park I ' t' §qll Project Final EIR 3-14 sc. A e— 4 Section 3 3,7 Regulatory Permits and Approvals The EiR/EA would provide the supporting environmental documentation for the following permits and approvals, Orange County Water District Project approval and related construction contracts and agreements County of Orange Encroachment Permit to allow excavation on the western and eastern levee of the Santa River to allow for the construction and operation of the water supply pipeline across the existing nose piers of the Edinger Avenue Bridge, County of Orange Encroachment Permit to allow the back flushing of injection well water into the Greenville Banning Flood Control Channel. 0 United! States Army Corps of Engineers 408 Permit, City of Santa Ana well construction permits for the 4 injection wells and 1 monitoring well, approval of license agreement for the pipeline and well site locations within Centennial Park and an encroachment permit for the construction of the pipeline along Edinger Avenue. Santa Ana Unified School District approval of license agreement for monitoring well within Heritage Museum a State of California Parks and Recreation Project approval * United States National Parks Service Project approval. Mid Basin Centennial Park I I Project Final EIR 3-15 tlft Borehole Drilling and Reariiing '14 Well Construction 5 Well Develoement 8 Well Equipping '12 MF31-2 & lvlBl-4: Equipping__ Vill Well Equipping 12 10131-3 & M131-6: 28 12!Lp in Skate park Fence and Camera *14 Skate park Irnproverne ts Paving 4 Parking Lot & Roads Skate Park Improvements occur concurrent with Well Equipping 3,7 Regulatory Permits and Approvals The EiR/EA would provide the supporting environmental documentation for the following permits and approvals, Orange County Water District Project approval and related construction contracts and agreements County of Orange Encroachment Permit to allow excavation on the western and eastern levee of the Santa River to allow for the construction and operation of the water supply pipeline across the existing nose piers of the Edinger Avenue Bridge, County of Orange Encroachment Permit to allow the back flushing of injection well water into the Greenville Banning Flood Control Channel. 0 United! States Army Corps of Engineers 408 Permit, City of Santa Ana well construction permits for the 4 injection wells and 1 monitoring well, approval of license agreement for the pipeline and well site locations within Centennial Park and an encroachment permit for the construction of the pipeline along Edinger Avenue. Santa Ana Unified School District approval of license agreement for monitoring well within Heritage Museum a State of California Parks and Recreation Project approval * United States National Parks Service Project approval. Mid Basin Centennial Park I I Project Final EIR 3-15 tlft Section 4 4.1 NEPA Range of Alternatives CEQA requires that a Draft EIR include a discussion of reasonable project alternatives that would feasibility attain most of the project objectives, but would avoid or lessen any significant effects of a proposed project activity. Additionally, NEPA requires that a Draft EA objectively evaluate a reasonable range of alternatives to the proposed project. Under NEPA, reasonable alternatives are those that are practicable or reasonable from a technical and economic perspective- Where alternatives have been eliminated from detailed study, the Draft EA must discuss the reasons for their elimination. 4.2 Alternatives Not Under Review Increase Imported Water Supplies Under the Increase Imported Water Supplies Alterative, OCWD would import additional water supplies from the State Water Project and from the Colorado River to help replenish the Orange County Groundwater Basin. Because of the prolonged drought conditions occurring in California and throughout the western United States imported water supplies are limited and would be uncertain if adequate amounts of imported water supplies would be available in the near future. Because of the uncertainty of available imported water supplies, OCWD cannot rely only on imported water alone to replenish the groundwater basin Therefore, relying on imported water supplies to replenish the groundwater basin Would not be a viable alternative. Construction of Above Ground Injection Wells Under terms of agreement with the National Park Service, Centennial Park is required to be dedicated for open :space and recreation. The construction of above ground injection wells would result in the loss of open space at Centennial Park. Because the above ground injections would be in conflict with the National Park Service park use requirements, the alternative would not be considered viable, Alternative Location The water supply for the Mid Basin Injection Well Project would be recycled water from OCWD Groundwater Replenishment System (GWRS). Therefore, any alternative site location would need the ability to tie into the GWRS pipeline. Several sites were initially identified. However, they were subsequently rejected because they did have the ability to easily tie into the GWRS water supply or that they lacked the required geology. Mid Basin Centennial Park Injection Well Project Pinal ERR 4-1 Section 4 4.3 Alternatives Under Further Review Through the alternative evaluation Centennial Park was selected as the preferred location based an the following reasons. Centennial Park is located very close to the deepest part of the local groundwater table depression, which means that injecting water at this location would have an immediate and significant benefit on raising the depressed groundwater levels. • Centennial Park is located in close proximity to OCWD MBI-1 Demonstration Well and data and observations from the well would be applicable and useful in the construction and operation of the monitoring wells at Centennial Park. Centennial Park is in close proximity to the existing GWRS pipeline existing turn-out. Alternative 1: (No Federal Action/No Project) Under NEPA a No Federal Action Alternative must be considered and under CEQA a No Project Alternative must also be considered. The No Federal Action/No Project Alternative provides the basis for comparison with other alternatives, as it represents a condition both current and future under which nothing would be done to address the identified need and objectives for the project. Ulnder the No Federal Action/No Project Alternative the project would not be implemented. Centennial Park and the Heritage Museurn would continue to operate as a community park and Cultural resource learning center. Alternative 2: Centennial! Park Four Injection WelilHeritage Park Monitoring Well (Proposed Project) Under the Proposed Project, four injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum. Under Alterative 2, an estimated 12 MGD of additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Bassin. The Proposed Project Plan is shown in Figure 3. Alternative 3: Centennial Park Three Injection Wells/Heritage Park Monitoring Well (Reduced Intensity Alternative) Under Alterative 3, three injections wells and associated water supply and back flush pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum, Under Alterative 3, an estimated 9 MGD of additional groundwater recharge capacity would be provided! to replenish the Orange County Groundwater Basin. The Alternative 3 Project Plan, is shown in Figure 7. Mid Basin Cen te' n nia' t ' P a 25C_R7 l roject Final EIR 42 J Section 4 Figure 7: Alternative 3 Reduced Intensity u °, a Mid Basin Centennial Parks I A t §gI Project Final EIR 4 -3 Section 4 Alternative 4: Centennial Park Four Injection Wells/Heritage Park Monitoring Well with Alternative Pipeline Alignment (Pipeline Design Alternative) Under Alterative 4, four injections wells and associated water supply and back flush, pipeline would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum, Under Alternative 4, an alternative water supply pipeline alignment would be constructed that would extend through open space area in Centennial Park. The waiter supply pipeline would be the same approximate length and diameter as the water supply pipeline in the Prosed Project and would involves the same mix of construction equipment and construction activities, Under Alterative 4, an estimated 12 MGD of additional groundwater recharge capacity would be provided to replenish the Orange County Groundwater Basin. The Alternative 4 Project Plan is shown in Figure 8. 4.4 CEQA Environmentally Superior Alternative The State CEQA Guidelines CCR Section 15126.6(e) (2) requires identification of an environmentally superior alternative from among the Proposed Project and Project Alternatives, Federal NEPA regulations also recommend that an environmentally preferred alternative be identified; however, under NEPA, that alternative does not need to be identified Until the final record of decision is issued. Therefore, the discussion in this section of the environmentally superior alternative is intended to satisfy only the State CEQA requirements. The No Project Alternative would result in fewest adverse impacts to the environment, because none of the construction impacts associated with the project would Occur. If the No Project Alternative is considered the environmentally superior, State CEQA Guidelines CCR Section 15126.6(e) (2) requires the identification of an "environmentally superior alternative" other than the No Project Alternative from among the Proposed Project and the Project Alternatives, A comparison of the environmental impacts resulting from the implementation of the Proposed Project and Project Alternatives is shown in Table 3. Mid Basin Centennial Park I A ti - Al Project Final EIR 4-4 ' 9 Section 4 Table 3: Summary of Environmental Impacts Environmental Alternative 2 Aiternative I Alternative 3 Alternative 4 Issue Proposed No Federal Action Reduced Pipeline Project Action/No Project Intensity Design Alternative Alternative Aesthetics LSM L L E Air Quality LS L L E Biological i L E E Resources Cuitural LSM L L E Resources Environmental LS E E E Justice Geology i L E E Greenhouse LS L L E Gas Hydrology LSM L E E Land Use LS L E E i i L I- E Traffic i L E E 5-significant Impact L. Less Impact Compare to Proposed Project -8-Less IbHn Ftynificent Impart E-F. a Llivalent I rc pact C , orn pared to Pro po son Project LSM-Less than Sigrrfican( impact with G-Greater Impant Compared to Proposed Project MiEi alien Based on the analysis provided in the EIR/EA, Alternative 3 the Reduced Intensity Alternative would be considered the environmentally superior alternative- Alternative 3 would result in marginally lower level of intensity impacts to air quality, greenhouse gas emission and noise. Alternative 2 would have highest level of ability of achieving the project objectives while resulting in no significant adverse impacts to the environment. Mild Basin, Centenniall Park 12'ed'n4l Project Final DIR 4-5 Section 4 Figure 8: Alternative 4 Pipeline Design Alternative Mid Basin Centennial Park Aceffdi Project Final EIR 4-6 Section 5 This section of the Draft EIR/EA describes the affected environment and potential environmental consequences associated with the implementation of the Mid Basin Centennial Park Injection Well Project. Affected Environment: The affected environment provides an overview of the baseline physical environmental conditions at the project area and surrounding areas as appropriate at the time the notice of preparation i was published. Thresholds Significance: The thresholds of significance is criteria established by the Lead Agency to define at what level an Impact to the environment would be considered significant. The thresholds of significance used In this EIR/EA are derived from Appendix G of the State CEQA Guidelines, as amended. These thresholds also include the factors taken into account under NEPA to determine the significance of the action in terms of the context and the intensity of its effects. Environmental Consequence: The environmental consequence describes the environmental changes to the existing physical conditions that could occur from the project activities. The environmental consequences are described as temporary and long term impacts, and as direct impacts, indirect impacts and cumulative impacts. In evaluating potential environmental consequences the level of significance is determined by applying the significance criteria for each environmental issue. The following terms are used to describe each impact. No Adverse Impact: No adverse Impact determination indicates that the construction, operation and maintenance of the project would not have any direct or indirect adverse effects on the environment. • Less than Significant Adverse Impact: A less than significant adverse impact determination is one that would result in adverse change to the environment. However, it would occur at a level that would not be substantial. • Less than Significant Adverse Impact with Mitigation: A less than significant adverse impact with mitigation determination is given when the project activities may create a potential significant adverse change to the environment, but would be reduced to an insignificant level through the implementation of feasible mitigation measures. • Significant Adverse Impact: A significant adverse impact determination would be given when a project activity would cause a substantial adverse Mid Basin Centennial Park A& _Iliv� Project Final FIR 5-1 Section 5 change to the environment that would result in the permanent loss of a resource, resulting in a change to the environment that could jeopardize the permanent loss of resource or result in changes that could jeopardize public health and safety. 0 Beneficial Effect: A beneficial impact is an impact that is considered to cause a positive change or improvement to the environment. • Mitigation: Mitigation refers to measures that would be implemented to ,avoid or reduce potential' significant adverse impacts. Mitigation includes rectifying the impact by repairing, rehabilitating, or restoring the affected environment and reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action and compensating for the impact by replacing or providing Substitute resources or environments. 5.1 AESTHETIC RESOURCES 5.1.1 Affected Environment Regional Visual Context The project sites are situated within Centennial Park and at the Heritage Museum. Both sites are located within southwestern area of the City Santa Ana. The regional area is urbanized and both sites are surrounded by a combination of residential and industrial land uses. The visual character at both sites can be described as an aesthetically pleasing park-like environment that provides open space relief to an area that is predominantly urbanized. Centennial Park Centennial Park is an 87 acre community park facility. The park site is bordered by Santa Ana River to the west, residential land uses to the north, Greenville Banning Flood Control Channel and residential land uses to the east, Godinez High School and the Heritage Museum to the south. The park site contains both passive and active recreation uses, including lighted ball fields. The primarily visual elements at Centennial Park are Centennial Lake, expansive grass areas and concentrations of large canopy trees. The City Santa Ana General Plan does not identify any pubic scenic vistas or scenic corridors at Centennial Park. However, the park does contain several walking trails that provide public scenic vistas throughout the park. Additionally, the Santa Ana River Trail extends along the western boundary of Centennial Park providing public vistas into Centennial Park. The existing aesthetic condition at Centennial Park where the injection wells and shared structures would be constructed is shown in Figures 9, 10, 11 and 12. Mid Basin Centennial Park V11 Project Final EIR 5-2 At - f6i Section 5 Heritage Museum The Heritage Museum consists of approximately 13 acres of area. The museum site is bordered between the Mitchell Child Development Center and Greenville Banning Flood Control Channel to the east, industrial buildings to the east, and Godinez High School High School to the northeast. The primarily visual elernents at Heritage Museum are historical structures, gardens and an open space corridors. The site is visually separated into two areas. The southern portion of the site is occupied with several historical buildings that are surrounded by fruit trees, ornamental landscaping and a large Court yard. The northern portion of the museum site consists predominately of open space. A rolling hill with a walking path is situated in the center of the site that provides scenic vistas of the Heritage Museum site, West of the rolling hill is agriculture demonstration garden. The City Santa Ana General Plan does not identify any scenic vistas or scenic corridors at the Heritage Museum, However, the site does contain trails and public vistas that provide views of the open space and cultural resources at the Heritage Museum site. The existing aesthetic condition, of Heritage Museum, where the monitoring well would be constructed and an example of an underground monitoring well is shown in Figure 13. 5.1.2 Regulatory Framework The following are goals and policies from the City of Santa Ana General Plan that pertain to aesthetic resources at Centennial Park and the Heritage Museum, • Provide sufficient open space to meet the recreation and aesthetic needs of the community. • Maximize the City's aesthetic and visual appeal by increasing vegetation throughout the community and by enhancing architecture, historic and other visual resources. • Maintain the open, natural and recreation features of Santiago Creek and the Santa Ana River, to enhance these amenities as a passive and active open space view corridor, 5.1.3 Thresholds of Significance 1. Would the project have a substantial adverse effect an a scenic vista? 2. Would the project substantially degrade the existing visual character or quality of the site and its surroundings? 3. Would the project create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? Mid Basin Centennial Park AC&24W reject Final FIR 5-3 Section 5 Figure 9; Injection Well IV11311-2 & IVIBI-3 Locations Mid Basin Centennial Park 1,6266 Project Final EIR 5 -4 29f Section 5 Figure 10: Injection Well IVIBI -4 & MBI.5 Locations Mid Basin Centennial Perk �tenftProject Final EIR 5 -5 Section 5 Figure 11: Shared Recreation/Communications Structure 1 ttLij(�ffroject Final EIR 5-6 Mid Basin Centennial Park 2 10 Section 5 Figure 12: Shared Recreation/Communication Structure 2 o Mid Basin Centennial Park jg&nfdbProj . ect Final FIR 5-7 Section 5 Figure 13: Heritage Museum Monitoring Well Location Mid Basin Centennial Park Project Finall EIR 5-8 kl:-O Aefi% Section 5 5.1.4 Environmental Consequences IMPACT AR-1: Would the project have a substantial adverse effect on a scenic vista? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. Both Centennial Park and the Heritage Museum would continue to operate as open space and cultural resources. There would be no changes to existing scenic vistas within and into Centennial Park and at the Heritage Museurn, Alternative 2: Proposed Project Centennial Park Under the Proposed Project four injection wells and water supply and back flush pipeline and two shared recreation/communication Structures would be constructed at Centennial Park. The construction of the water supply pipeline would require construction activities within the east and west facing levees of the Santa Ana River, Existing views along the Santa Ana River Trail would be temporary replaced with construction activity and equipment. The temporary impacts to existing vistas Would be for a short period of time and once the construction activities are completed existing views of where the construction activities occurred' be returned to their pre- project condition. Because the construction impacts would be for a short period of time and existing views would be returned to their pre-project condition, the potential short-term adverse impact to scenic vistas would be less than significant. The proposed water supply pipeline would extend along the noise piers of the Edinger Avenue Bridge, Aesthetic treatment would be incorporated into the design of the pipeline to compliment the aesthetic appearance of the bridge structure. The pipeline would be well above the Santa Ana River Trail and would not obstruct any views. Potential long term view shed impacts associated with presence of the water Supply pipeline would be less than significant. The injection wells and pipelines proposed within Centennial Park would be located underground beneath existing parking areas. The only exposed part of the injection wells would be two or three, 5'x 5' foot metal covers that would be at grade withe the existing parking lot surface. The presence of the metal covers would not obstruct any scenic vistas within the park or potential views into the park from the Santa Ana River Trail. 'J Mid Basin Centennial Park rIR 5-9 AtOM , Project Final E Section 5 The Proposed Project includes the construction of two shared recreation/communication structures. Shared Structure 1 would be located at the northeast corner of the Soccer Fields within an existing asphalt area. The area where the Shared Structure 1 Would be built is situated between a large landscape embankment and the soccer field complex and would not be within view shed of any aesthetic resources. The presence of the Shared Structure I would also not obstruct any views within the park or views into the park from the Santa Ana River Trail. Share Structure 2 would be constructed within the footprint of an existing restroom. The existing restroom would be demolished and replaced with Shared Structure 2 and would not adversely affect existing views within the park. Heritage Museum Under the Proposed Project, a below ground monitoring well would be constructed at the Heritage Museum within an existing parking lot. The only exposed part of the monitoring well would be a metal cover and concrete apron which would be at grade and would not interfere with existing views within the Heritage Museum site. No potential long term adverse impacts to scenic vistas within Heritage Museum would occur. The construction of the monitoring well would temporary replace existing scenic vistas within the Heritage Museum with construction activity and equipment. The potential construction impacts to scenic vistas Would be for a short period of time and Would be confined to specific locations at the Heritage Museum site. Because the temporary impact would be for a short period of time and once the construction operations are completed, existing views within Heritage Museum would be returned to their pre-project condition, short-term construction related adverse impacts to scenic vistas would be less than significant. Alternative 3: Reduced! Intensity Alternative Under Alternative 3, three injection well's would be constructed at Centennial Park and a below ground monitoring well would be constructed at the Heritage Museum. Potential long term impacts to scenic vistas would be similar to the level of impacts associated with the Proposed Project. No potential long term adverse impacts to scenic vistas within Centennial Park or within Heritage Museum would occur. Under Alternative 3, one less injection well would be constructed. The construction activity for one well is approximately 6 months. Therefore, there would be 6 months less of construction activity that would have the potential to adversely affect scenic vistas in Centennial Park, Similar to the Proposed l Mid Basin Centennial Park fe&_ n � Project Final EIR 5-10 kzl ojo , Orf Section 5 Project, potential short-term construction related adverse impacts to scenic vistas at Centennial Park and at the Heritage Museum would be less than significant. Alternative 4: Pipeline Design Alternative Under Alternative 4, four injection wells would be constructed at Centennial Park and above ground' monitoring well Would be constructed at the Heritage Museum. Under Alternative 4, the water supply pipeline within Centennial Park would extend through open space. The pipeline would be underground and would not be visible to the public. Potential long term impacts to scenic vistas would be similar to the level of impacts associated with the Proposed Project. No potential long term adverse impacts to scenic vistas within Centennial Park or within Heritage Museum would occur. Construction activities associated with Alterative 4 would result in short-term adverse scenic vista impacts at Centennial Park and at the Heritage Museum. Because the water supply line would extend through open space areas at Centennial Park there would be increased potential for the construction activities to be visible to the public. Similar to Proposed Project, the potential view shed scenic impacts would be for a short period of time and when construction activities are completed existing views would be returned to their pre-project condition. Potential adverse impacts to scenic vistas at Centennial Park and at the Heritage Museum would be less than significant. Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT AR-2- Would the project substantially degrade the existing visual character or quality of the site and its surroundings? Alternative 1: No Federal ActionlNo Project Under Alternative 1, the project would not be implemented, Both Centennial Park and the Heritage Museum would continue to operate as open space and cultural resources. There would be no changes the existing visual character at Centennial Park or at the Heritage Museum. %11*,�.) Mid Basin Centennial Park Project Final EIR 5-11 0 AtIO M Section 5 Alternative 2: Proposed Project Centennial Park Under Alternative 2, the proposed injection wells and associated pipelines would be located below ground. Therefore, there would riot be any long term visual changes to areas where the injection wells and pipelines would be constructed. The two proposed shared recreation/communication structures at Centennial Park would mimic the existing structures at the park and would be consistent with the park's existing visual character- No long term adverse changes to the existing visual character at Centennial Park would occur. The construction activities for the Proposed Project would temporary disrupt the park like setting where the construction activity would occur. The construction activity would occur in isolated areas at Centennial Park for short periods of time and would riot adversely change the park's overall visual character. Potential adverse short-term construction impacts to the existing character at Centennial Park would be less than significant, Heritage Museum The proposed monitoring well would be located underground within an existing parking area. The presence of the monitoring well's metal cover and concrete apron would not result in significant long-term adverse changes to the visual character of the Heritage Museum. The construction activities for the monitoring well would temporary disrupt the park like setting at the Heritage Museum site. The construction activity would within an existing parking lot that and would be isolated from the aesthetic resources at the Heritage Museum site, The construction activity would not substantially change the overall visual character at the Heritage Museum. Potential short-term construction related adverse impacts to the existing character of Heritage Museum would be less than significant. Alternative 3: Reduced Intensity Alternative Under Alternative 3, three injection wells would be constructed at Centennial Park and an above ground monitoring well would be constructed at the Heritage Museum, The level of potential long term impacts to the visual character at Centennial Park and at the Heritage Museum would be similar to the Proposed Project. Potential long term adverse changes to the existing visual character at Centennial Park and at the Heritage Museum would be less than significant. Under Alternative 3, one less injection well would be constructed at Centennial Park. Therefore, there will be less amount of construction activity occurring at Centennial Park. The reduced amount of construction activity would not Mid Basin Centennial Park 28ce-noffi Project Final EIR 5-12 R-Mromm substantially reduce potential short term construction related visual impacts at Centennial Park. Similar to the Proposed Project, potential short term construction related adverse impacts to the existing visual character at Centennial Park and at the Heritage Museum would be less than significant Alternative 4: Pipeline Design Alternative Under Alterative 4, four injections wells would be constructed at Centennial Park and a below ground monitoring well would be constructed at Heritage Museum. The wells would not visible to the public and no long term adverse changes to the existing visual character at Centennial Park and at the Heritage Museum would occur. Similar to the Proposed Project potential long term adverse changes to the existing visual character of Centennial Park and at the Heritage Museum would be less than significant. Under Alternative 4, the water supply line would extend through open space at Centennial Park. There would be increased potential for short-term adverse construction related impacts to affect the aesthetic character of the park. Similar to Proposed Project, the construction related aesthetic impacts would be for a short period of time and when completed the disturbed areas would be returned to their pre-project condition. Potential short-term impacts to the existing character of Centennial Park and the Heritage Museum would be less than significant, Mitigation: Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT AR-3: Would the project create a new source of substantial light or glare which will adversely affect day or nighttime views in the area? Alternative 1: INo Federal! Actilon/No Project Under Alternative 1, no long term improvements and no construction activities would occur at Centennial Park or at the Heritage Museum, The Centennial Park and Heritage Museum site project area would continue to experience spill over lighting from the lighted fields at Centennial Park. Mid Basin Centennial Park MV2�V 4Project Final EIR 5-13 loqUMIN11,11101 Alternative 2: Proposed Project The proposed injection wells at Centennial Park and the proposed monitoring well at the Heritage Museum would not permanently introduce new sources of light and glare into the project area. The proposed shared recreation /communication structures at Centennial Park would be installed with low intensity security light that would be focused on the shared structure site. No long term light and glare impacts would occur. The proposed well drilling activities at Centennial Park and at the Heritage Museum would occur at night. Additionally, the water supply pipeline and back flush pipeline at Centennial Park would also be constructed at night. To ensure safe working conditions during the night time, floodlights Would be used to light the work area. Sensitive receptors within the line of sight of the flood lights during night time Construction activities could be adversely impacted from spill over light and glare impacts. To avoid adverse spill over light and glare impacts, the floodlights would be shielded and directed to the work area. With the implementation of Mitigation Measures AR-11 and AR-2 potential construction related light and glare impacts would be reduced to a less than significant level. Alternative 3. Reduced Intensity Alternative Under Alterative 3, the level of potential long term light and glare impacts at Centennial Park and at the Heritage Museum would be similar to the Proposed Project and Would be less than significant. Under Alternative 3, the well drilling activities and pipeline construction at Centennial Park and the Heritage Museum would occur at night. Because Alterative 3 involves, the construction of one less injection well, there would be a reduced amount of night time lighting required at Centennial Park, The reduced amount of night time lighting would not substantially reduce the level of potential light and glare impacts. Similar to the Proposed Project, with the implementation of Mitigation Measures A-1 and A-2 potential adverse light and glare impacts would be reduced to a less than significant level. Alternative 4: Pipeline Design, Alternative The level of potential, long term and short-term light and glare impacts at Centennial Park and at the Heritage Museum would be same as the Proposed Project. With the implementation of Mitigation Measures AR-1 and AR-2 potential construction related adverse light and glare impacts would be reduced to a less than significant level. Mid: Basin Centennial Park reject Final EIR 5-14 Aeffvf 9P Section 5 Mitigation Measure AR-11: Construction lighting fixtures will be shielded by providing side flap on lights, or providing a temporary drape/wall so that illumination is confined to within the work area. Onsite construction lighting will be arranged so that direct rays will not shine in or produce glare impacts to sensitive receptors. AR-2: If the onsite construction lighting creates a light or glare issues for sensitive receptor properties, OCWD will implement corrective measures to resolve the iissule. Such corrective measures may include providing additional shielding on light fixtures, relocating lighting light fixtures or increasing, the height of the temporary drape/wall. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with the implementation of Mitigation Measures AR-1 and AR-2. Alternative 1 Less than significant adverse impact with the implementation of Mitigation Measures AR-1 and AR-2. Alternative 4: Less than significant adverse impact with the implementation of Mitigation Measures AR-1 and AR-2. Mid Basin Centennial Park 2M&OM Project Final EIR 5-15 Section 5 The following analysis is a summary of an Air Quality impact Report prepared for the Mid Basin Centennial Park Injection Well Project by BonTerra/Psornas in October of 2015. The Air Quality Report is presented in its entirety in Appendix B. 5.2.1 Affected Environment The project site is located in the City of Santa Ana and within the South Coast Air Basin (Basin). The Basin consists of Orange County, all of Los Angeles County except for the Antelope Valley, the non-desert portion of western San Bernardino County, and the western and Coachella Valley portions of Riverside County. The basin is an and environment with little rainfall and abundant sunshine occurring during the summer months. The topography and climate of Southern California combine to make the Basin an area of high air pollution potential. During the summer months, a warm air mass frequently descends over the cool, moist marine layer produced by the interaction between, the ocean's surface and the lowest layer of the atmosphere. The warm upper layer forms a cap over the cooler surface layer and inhibits the pollutants from dispersing upward. Light winds during the summer further limit ventilation. Additionally, abundant sunlight triggers the photochemical reactions that produce ozone and the majority of particulate matter. The region experiences more days of sunlight than any other major urban area in the nation except for the City of Phoenix Attainment Status The EPA and the ARB designate air basins where ambient air quality standards are exceeded as "nonattainment" areas. If standards are met, the area is designated as an "attainment" area. If there is inadequate or inconclusive data to make a definitive attainment designation, they are considered "unclassified." National nonattainment areas are further designated as marginal, moderate, serious, severe, or extreme as a function of deviation from standards. Each standard has a different definition, or 'form' of what constitutes attainment, based on specific air quality statistics. For example, the Federal 8-hour CO standard is not to be exceeded more than once per year. Therefore, an area is in attainment of the CO standard if no more than one 8-hour ambient air monitoring values exceeds the threshold per year. In contrast, the Federal annual PM2r5 standard is met if the 3-year average of the annual average PM2 5 concentration is less than or equal to the standard. The current attainment designations for the Basin are shown in Table 4. The Basin is designated as nonattainment for the state and federal ozone, PM10, and PM2 5, standards. The Basin is also in nonattainment for the state nitrogen dioxide annual standard, based on the 2006-2008 data. Based, on more recent Mid Basin Centennial Park�jnlLProject Final EIR 5-16 Section 5 data (2007 - 2009), the Basin would be in attainment for nitrogen dioxide; however, the State has not officially designated the Basin as in attainment. Table 4: South Coast Air Basin Attainment Status Pollutant State Status National Status Ozone Nonattainment Nonattainment - Extreme Carbon monoxide Attainment Maintenance - Serious Nitrogen dioxide (annual) Nonattainment Attainment Nitrogen dioxide (1 -hour) Attainment Maintenance Sulfur dioxide Attainment Attainment PM I' Nonattainment. Maintenance - Serious PM2 y Nonattainment Nonattainment - Moderate Load (Los Angeles County) Nonattainment Nonattainment Lead (other parts of Basin, including the project area) Attainment Attainment Source of Sir'�10 stntua'. Califcrnia Ar Hesoumes Board 2013b. Sor,vice of NaGlaaial s4btus; IJ.S. Envlronmenial Protectlon Agency 24014. 5.2.2 Regulatory Framework. Air Pollution Regulations Air pollutants are regulated at the national, state, and air basin level and each agency have a different level of regulatory responsibility. The United States Environmental Protection Agency (EPA) regulates at the federal level. The California Air Resources Board (ARB) regulates at the state level'. The South Coast Air Quality Management district (SCAQMD) regulates at the air basin level. Federal Regulation The EPA is responsible for national and interstate air pollution issues and policies. The EPA sets national vehicle and stationary source emission standards„ oversees approval of all State Implementation Plans, provide research and guidance for air pollution programs, and sets National Ambient Air Quality Standards, also known as federal standards. There are federal standards for the following criteria air pollutants, which were identified from provisions of the Clean Air Act of 1970: Mid Basin Centennial Park Y'66, 6,206 Project Final EiR 5 -17 Section 5 , Ozone - Particulate matter(Pivii(I and PM25) , Nitrogen dioxide , Carbon monoxide (CO) . Lead - Sulfur dioxide The federal standards were set to protect public health, including that of sensitive individuals; thus, the standards continue to change as more medical research is available regarding the health effects of the criteria pollutants. Primary federal standards are the levels of air quality necessary, with an adequate margin of safety, to protect the public health. State Regulation A State Implementation Plan is a document prepared by each state describing existing air quality conditions and measures that Would be followed to attain and maintain federal standards. The State Implementation Plan for the State of California is administered by the ARB, which has overall responsibility for statewide air quality maintenance and air pollution prevention, California's State Implementation Plan incorporates individual federal attainment plans for regional air districts. The regional air district prepares their federal attainment plan, which is sent to the ARB to be approved and incorporated into the California State Implementation Plan. Federal attainment plans include the technical foundation for Understanding air quality (e.g., emission inventories and air quality monitoring), control measures and strategies, and enforcement mechanisms. The ARB also administers California Ambient Air Quality Standards (state standards) for the 10 air pollutants designated in the California Clean Air Act. The 10 state air pollutants are the six federal standards listed above as well visibillity-reducing particulates, hydrogen sulfide, sulfates, and vinyl chloride. Several of the State pollutants are not addressed in this analysis. Analysis of lead is not included in this report because the Proposed Project would not be anticipated to emit lead. Visibility-reducing particles are not explicitly addressed in this analysis because particulate matter is addressed. The Proposed Project would not be expected to generate or be exposed to vinyl chloride because it would not use chemical processes that create this pollutant and there would be no such uses in the project vicinity. The Proposed Project would not be expected to cause exposure to hydrogen sulfide because it would not generate hydrogen sulfide i!n any substantial quantity, Mid Basin Centennial Park A&M Project Final EIR 5-18 Section 5 South Coast Management District The agency for air pollution control for the South Coast Air Basin (Basin) is the SCAQMD, The SCAQMD is responsible for controlling emissions primarily from stationary sources, The SCAQMD is also responsible for developing, updating, and implementing the AQMP for the Basin, in coordination with the Southern California Association of Governments. Air Quality Management Plans In response to Federal and State requirements to implement measures to achieve the Federal and State air quality standards, the SCAQMD is responsible for reducing emissions from stationary (area and point), mobile, and indirect sources. It has responded to this requirement by preparing a sequence of AOMPs. An AQMP establishes a program of rules and regulations directed at attaining the Federal and State air quality standards. On November 28, 2007, CARS submitted a SIP revision to the USEPA for 03, PM2.5, CO, and NO2 in the Basin. This revision is identified as the "2007 South Coast SIP". The 2007 South Coast SIP demonstrates attainment of the federal PM2.5 standard in the Basin by 2014 and attainment of the federal 8-hour 03 standard by 2023. This SIP also includes a request to reclassify the 03 attainment designation from "severe" to "extreme", The USEPA approved the redesignation effective June 4, 2010. The "extreme" designation requires the attainruent of the 8-hour 03 standard in the Basin by June 2024. GARB approved PM2.5 SIP revisions in April 2011 and the 03 SIP revisions in July 2011. The USEPA approved the PM2.5 SIP on September 25, 2013, and has approved 47 of the 62 1997 8-hour 03 SIP requirements. On November 30, 2014, the USEPA proposed a finding that the Basin has attained the 1997 PM2.5 standards. The comment period closed on January 22, 2015; no subsequent action has been taken. On December 7, 2012, the SCAQMD adopted the 2012 ACIMP, which is a regional and muitiagency effort between SCAOMD, CARS, SCAG, and USEPA. The 2012 AQMP incorporates the latest scientific and technical information and planning assumptions including; SCAG,'s 2012-2035 Regional Transportation Plan/Sustainable Communities Strategy, updated emission inventory methods for various source categories: and SCAG's latest growth forecasts. The primary purposes of the 2012 ROMP are to demonstrate attainment of the federal 24- hour PM2.5 standard by 2014 and to update the USEPA-approved 8 -hour Ozone Control Plan. On December 20, 2012, the 2012 AQMP was submitted to CARB and the USEPA for concurrent review and approval for inclusion in the SIP. Mid Basin Centennial Park jgq& 1 16Project Final EIR 5-19 Section 5 CARS approved the 2012 AQMP on January 25, 2011 The USEPA has snot approved the 2012 AOMP portion of the SIP. SCAQMD Rules The AQMP for the Basin establishes a program of rules and regulations administered by SCAQMD and the State to obtain attainment of the state and federal standards. The rules and regulations that apply to the Proposed Project include the following: SCAQMD Rule 402 prohibits a person from discharging from any source whatsoever such quantities of air contaminants or other material which could cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health or safety of any such persons or the public, or which could cause, or have a natural tendency to cause, injury or damage to business or property. SCAQMD Rule 403 governs emissions of fugitive dust during construction and operation activities. Compliance with this rule Would be achieved through application of standard Best Management Practices, such as application of water or chemical stabilizers to disturbed soils, covering haul vehicles, restricting vehicle speeds on unpaved roads to 15 miles per hour, sweeping loose dirt from paved site access roadways, cessation of construction activity when winds exceed 25 mph, and establishing a permanent ground cover on finished sites. Local RegulationslPolicies City of Santa Ana General Plan The following are air quality objectives and policies from the City of Santa Ana General Plan that would apply to the Proposed Project. • Reduce air pollution emissions to achieve ambient air quality standards. • Enforce emission standards contained in local ordinances. 5.2.3 Thresholds of Significance 1. Would the project conflict with or obstruct implementation of the applicable air quality plan? 2. Would the project violate any air quality standard or contribute substantially to an existing or projected air quality violation? 3. Would the project result in a cumulatively considerable net increase of any criteria Pollutant for which the project region is nonattainnnent under an applicable national or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors)? Mid Basin Centennial Park 1�t&nf�jProject Final EIR 5-20 2 Section 5 4. Would the project expose sensitive receptors to substantial pollutant concentrations? 5. Would the project generate air emissions that will exceed. Federal General Conformity Rule de minimis thresholds? 5. Would the project create objectionable odors affecting a substantial number of people? 5.2.4 Environmental Consequences IMPACT AIR -1: Would the project conflict with or obstruct implementation of the applicable air quality plan? Alternative 1: No Federal Action /No Project Under Alternative 1, the project would not be implemented. There would not be any regional or local construction emissions or any regional or local operational emissions generated within the project area that could have the potential to conflict with the SCAQMD Air Quality Management Plan. Alternative 2: Proposed Project The main purpose of an AQMP is to bring an area into compliance with the requirements of Federal and State air quality standards. The 2012 AQMP is designed to accommodate expected future population, housing, and employment growth and is based on SCAG's 2012 -2035 regional population, housing, and employment projections, which was developed from City and County General Plans. The Proposed Project would expand the OCWD's GWR System to meet existing and planned water supplies and would not change regional populations housing, and employment projections within the Basin. As shown in Tables 5, 6, 7, and 8, pollutant emissions generated from the Proposed Project would be less than the SCAQMD thresholds and would not result in a significant air quality impact. Implementation of the Proposed Project would not be in conflict with the South Coast Air Quality Management District AQMP. Alternative 3: Reduced Intensity Alternative The results of AQMP conformity analysis for Alternative 3 would be the same as the Proposed Project. Implementation of Alternative 3 would not be in conflict with the South Coast Air Quality Management District AQMP. Alternative 4: Pipeline Design Alternative The results of AQMP conformity analysis for Alternative 4 would be the same as the Proposed Project. Implementation of Alternative 4 would riot be in conflict with the South Coast Air Quality Management District AQMP. 5 -21 Mid Basin Centennial Park J�cjt ©n�Ve Project Final EIR Section 5 Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 1 No adverse impact Alternative 4. No adverse impact IMPACT AIR-2: Would the project violate any air quality standard or contribute Alternative 1: No Federal Action/No, Project Under Alternative 1, the project would not be implemented. There would not be any regional or local construction emissions or any regional or local operational emissions generated within the project area that could have the potential to be in conflict with S,CAQMD air quality standards. The South Coast Basin Would continue to be a State and Federal non-attainment area for PM1 0, PM2.5 and ozone. Alternative 2: Proposed Project Regional Construction Emissions The Proposed Project would occur in eight non-overlapping phases. Some phases would include more than one activity and each activity would have elements that would require a different mix of construction equipment. The construction equipment descriptions and activity durations were input into CalEEMod to develop emissions estimates for each phase or activity. The emissions generated from construction operations from the Proposed Project are shown in Table 5. These values are compared with the SCAQMD daily construction emission thresholds to determine if a significant air quiality impact would occur. All estimated emissions would be less than the SCAOMD significance thresholds. Mid Basin Centennial Park Jlr& Project Final EIR 5-22 b Section 5 Table 5: Proposed Project Estimated Maximum Daily Construction Emissions (Pounds/Day) Phase VOC Nrix Co PM10 Pill Phase 1- Install pipeline 1 17 17 3 1 Build Shared Structures Improve Heritage Site Phase 2- Well Drilling 4 51 48 3 2 Phase 3 -4-5-Well Drilling 4 51 48 3 2 Phase 3-4-5- Well 2 30 17 1 1 Development I Total Phases 3-4-5 6 82 65 4 3 Phase 6- Well Development 2 30 17 1 1 Phase 7- Well 4 51 48 3 2 Drilling/Development Phase 7-Monitaring Well <0 5 7 5 <0,5 <0.5 Equipping Total Phase 7 5 58 53 3 3 Phase 6- Well Equipilpaving 3 20 22 a 2 Significance Threshold 75 1 100 1 550 150 55 Significant Impact? No No No No No Skate park construbfion emissions would he negligible compared to the well-drilling and equipping emissions and are not shown. See Appendix B for CalEEMod Model outputs Localized Construction Emissions The localized effects from the on-site portion of daily construction emissions were evaluated at sensitive receptor locations potentially impacted by the Proposed Project according to the SCAQMD's LST (Localized Significant Threshold) method, LSTs are applicable to the following criteria pollutants: NO2, CO, PM1 0, and PM2.5. LSTs represent the maximum emissions from a project that would be expected to cause or contribute to an exceedance of the most stringent applicable Federal or State ambient air quality standard, and are developed based on the ambient concentrations of that pollutant for each source receptor area and distance to the nearest sensitive receptor. When quantifying mass emissions for localized analysis, only emissions that occur on site are considered. The maximurn on -site emissions would occur during well drilling. A source to receptor distance of 50 meters (164 feet), was Mid Basin Centennial Park l ed -n yy 11 Project Final Ells 5 -23 4 Section 5 selected because it is assumed that there would be no sensitive receptors within 50 meters of the well sites during drilling. As shown in Table 6, all estimated emissions would be less than the SCAQMD significance thresholds. Table 6: Proposed Project Localized Construction Emissions Construction Activity Voc Emissions (Pounds/Day) Co PM10 PM2.5 Well Redevelopment 4 NOx Co PM10 Pli Project maximum daily 81 64 7 2 on-site emissions Significant Impact? No No No SCAQMD Scireerrdng 83 753 12 4 Thresholds Exceed Threshold? No No No No NQu= Milrogafloxides CO - carbon monaxide PM,o and Pioz particulate matter NoW,I S I ource of thresholds: South Coasi Air 0iiality Management Dstrii 2009, for SRA 22. 500 meters 1 -afire site Regional Operational Emissions The primary operational activities that would emit criteria pollutants would be the injection well and monitoring well redevelopment activities. Assuming redevelopment of each well every two years, operational emissions were estimated assuming the redevelopment of an average of two and one-half wells per year, that is, two injection wells each year and the monitoring well every other year- The well redevelopment emissions were calculated in CalEEMod as construction emissions because the operation of the proposed project involves the use of construction equipment. As shown in Table 7, all estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Table 7: Proposed Project Regional Operational Emissions Phase Voc li Co PM10 PM2.5 Well Redevelopment 4 41 is 1 1 Significance Threshold 55 55 550 150 55 Significant Impact? No No No No No Local Operational Emissions The localized effects from the on-site portion of daily operational emissions for the Proposed Project were evaluated at sensitive receptor locations potentially Mid Basin Centennial Park Ac&n Project Ii EIR 5-24 2 Section 5 impacted by the Proposed Project. As shown in Table 8, all estimated emissions would be less than the applicable thresholds. Table 8- Proposed Project Local Operational Emissions Phase NOx co PM10 PM2.5 Well Redevelopment 40 17 1 1 Significance Threshold 83 753 12 4 Significant Impact? No No No No Alternative 3: Reduced Intensity Project The following analysis evaluates regional construction emissions., localized construction emission, regional operational emissions and localized operation emissions generated from Alternative 3. Regional Construction Emissions As shown in Table 9, all estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Table 9: Alternative 3 Estimated Regional Daily Construction Emissions (Pounds /Day) Phase Voc NOx Co PM10 PM15 Phase 1- Install pipeline 1 17 17 3' 1 Build Shared Structures Improve Heritage Site Phase 2- Well Drilling 4 51 48 3 2 Phase 3 -4- Well Drilling 4 51 48 3 2 Phase 3 -4- Well 2 30 17 1 1 Development Total Phases 3 -4 6 82 65 4 3 Phase 6- Well 2 30 17 1 1 DrillinglDevelopment Phase 7- Monitoring Well 4 51 48 3 2 Drilling and well equipping Phase 7 Well equipping <0.5 7 5 <0.5 <0.5 Total Phase 7 5 58 53 3 2 Phase 8- Well Equip /Paving 3 20 22 a 2 a ° Mid Basin Centennial ParkI i jl�3y 11 Project Final EIR 5' -25 11 lr ''1111 Section 5 Significance Threshold 75 100 550 150 55 Significant Impact? No No No No No No aftimlies p.., posGd Ux Flia,in f, — Skate Nark wmstruc,ioo Tinfissi on s wat I td be IlogIIGIbb al IT] Pal ed [a the wall -Ijil I I fig and ep,ppof; euInsions and are rid $h 0"n BOLD ogive Fxceeds SCACMD thrpffhnNd See, Appenclix B For CaEEMod Modfa faulpifls Localized Construction Emissions Localized impacts from the Alternative 3 would be the same as the Proposed Project, As shown in Table 6 localized emissions of NO2, CO, PM10 and PM2.5 would not exceed the thresholds and potential localized air quality impacts would be less than significant. Regional Operational Emissions The operational emissions were estimated assuming the redevelopment of an average of two wells per year, that is, two injection wells one year and one injection well and the monitoring well the alternate year. Maximum daily emissions for Alternative 3 project operations would be the same as the Proposed Project. All estimated emissions Would be less than the applicable SCAQMD CEQA significance thresholds. Localized Operational Emissions The localized effects from the on-site portion of daily operational emissions for Alternative 3 would be the same as the Proposed Project. All estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Alternative 4: Pipeline Design Alternative The following analysis evaluates regional construction emissions, localized construction emission, regional operational emissions and localized operation emissions generated from Alternative 4. Regional Construction Emissions The regional daily construction daily emissions for Alternative 4 would be the same as the Proposed Project, All estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Localized Construction Emissions The localized construction emissions for Alternative 4 would be the same as the Proposed Project. All estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Mid Basin Centennial Park �Jg6pnfj Project Final EIR 5-26 Section 5 Regional Operational Emissions The maximum daily emissions for Alternative 4 would be the same as for the Proposed Project. All estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Localized Operational Emissions The localized effects from the on -site portion of daily operational emissions for Alternative 4 would be the carne as the Proposed Project. As shown in Table 5 all estimated emissions would be less than the applicable SCAQMD CEQA significance thresholds. Mitigation Measures No mitigation measures required. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3. Less than significant adverse impact. Alternative 4: Less than significant adverse impact IMPACT AIll Would the project result in a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattai,nment tinder an applicable national or state ambient air quality standard (including releasing emissions which exceed quantitative thresholds for ozone precursors)? Alternative i No Federal Action /No Project Under Alternative 1, the project would not be implemented. There would not be any significant emissions generated that would incrementally contribute to significant cumulative adverse air quality impacts in the South Coast Air Basin, Alternative 2: Proposed Project The region is a Federal and /or State nonattainment area for PM10, PM2.5, and 473. The Proposed Project would contribute particulates and the 03 precursors VQC and NQx to the area during short -term project construction and long -term operations. SCAQMD considers the thresholds for project- specific impacts and cumulative impacts to be the same. As described previously, the construction and operational regional emissions would be less than the SCAQMD CEQA significance thresholds and would be less than significant. Therefore, regional emissions would not be curn0atively considerable, and the impact would be less than significant. Mid Basin Centennial Park �j ed- rry'ti 6Project Final EIR 5 -27 Section 5 With respect to local impacts, cumulative particulate impacts are considered when projects could be within a few hundred yards of each other, No projects have been identified in the vicinity of the project site that would be Linder construction concurrently with the Proposed Project, Further, as shown in Tables 6 and 8, local PM10 and PM2,5 emissions from the Proposed Project would be less than the screening thresholds. Therefore, local construction emissions would not be cumulatively considerable, and the impact would be less than significant. Alternative 3: Reduced Intensity Project The analysis of cumulative emissions for Alternative 3 would be the same as the Proposed Project. Under Alternative 3 GLIMUlatiVO impacts Would be less than significant. Alternative 4: Pipeline Design Alternative The analysis of cumulative emissions for Alternative 4 would be the same as the Proposed Project. Under Alternative 4 Cumulative impacts would be less than significant. Mitigation Measure There is no mitigation measures required, Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT AIR-4: Would the project expose sensitive receptors to substantial pollutant concentrations? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any emissions generated that would expose sensitive receptors to substantial pollutant concentrations. Alternative 2: Proposed Project Carbon Monoxide Hotspots A CO hotspot is an area of localized CO pollution that is caused by severe vehicle congestion on major roadways, typically near intersections. If a project increases average delay at signalized intersections operating at level of service (LOS) E or F or causes an intersection that would operate at LOS 0 or better Mid Basin Centennial Park Aen, 5-28 2 _ Project Final EIR Section 5 without the project to operate. at LOS E or F with the project, a quantitative screening is required. The Proposed Project would generate a negligible a[TIOUnt of traffic during construction and operation activities. During construction the primary traffic would be mobilization and demobilization of construction equipment which would only Occur a few times over a two year period. During the operation of the Proposed Project the traffic would be limited to occasional Inspection visits and worker commuting during well redevelopment. The amount of construction traffic and operation traffic would not increase congestion at major signalized intersections within the project area. There would be no irnpact and no exposure of sensitive receptors to elevated levels of local CO emissions. Criteria Pollutants from On-Site Construction As described previously, the construction and operational localized air quality impacts generated from the Proposed Project would be less than significant, Toxic Air Contaminants The greatest potential for toxic air contaminants emissions during construction or operations would be related to diesel PM emissions associated with construction equipment operations during earth-moving activities. Earth-moving activities associated with the Proposed Project would be limited to approximately two weeks at the Heritage site and shorter durations at the shared recreation/communication structure sites and along the pipeline alignments within Centennial Park and along Edinger Avenue, The assessment of cancer risk would be typically based on a 30- to 70-year exposure period. Because exposure to diesel exhaust Would be substantially less than the 30- to 70-year exposure period, the incremental cancer risk to exposed persons would be negligible, The Impact would be less than significant. Alternative 3: Reduced Intensity Alternative Carbon Monoxide Hotspots Similar to the Proposed Project, Alternative 3 would generate a negligible amount of construction and operation traffic. Therefore, Alternative 3 would not increase congestion at major signafized intersections in the area. There would be no exposure of sensitive receptors to elevated levels of local CO emissions. Criteria Pollutants from On-Site Construction Under Alternative 3, the construction and operational localized impacts Would be similar to the Proposed Project and would be less than significant. Mid Basin Centennial Park Project Final EiR 5-29 Section 5 Toxic Air Contaminants The toxic air contaminants emissions for Alternative 3 would be less than for the Proposed Project because one less injection well would be constructed and redeveloped under Alternative 3. Potential toxic air contaminant emission impacts under Alternative 3 would be less than significant. Alternative 4. Pipeline Design, Alternative Carbon Monoxide Holspots Similar to the Proposed Project, Alternative 4 would generate a negligible amount of construction and operation traffic. Therefore, Alternative 4 would not increase congestion at major signalized intersections in the area. There would be no exposure of sensitive receptors to elevated levels of local CO emissions, Criteria Pollutants from On-Site Construction Under Alternative 4, the construction and operational localized air quality impacts would be similar as the Proposed Project and would be less than significant. Toxic Air Contaminants The toxic air contaminants for Alternative 4 would be similar to the Proposed Project and would be less than significant. Mitigation Measure No mitigation measures required. Level of Impact Alternative 1. No adverse impact Alternative Z Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 41 Less than significant adverse impact Mid Basin Centennial Park Adfiffl Project Final EIR 5-30 Section 5 IMPACT AIR-5: Will the Project generate air emissions that will exceed Federal General Conformity Rule de minimis thresholds? The 1990 Amendments to Section 176 of the FCAA require the USEPA to promulgate rules to ensure that federal actions conform to the appropriate SIP. These rules, known as the Transportation Conformity Rule and the General Conformity Rule require any federal agency responsible for an action in a nonattainment or maintenance area to detern-rine whether that action conforms to the applicable SIP or whether the action is exempt from the conformity rule requirements. The General Conformity Rule wouNd apply if a federal action would be required and the project is in a federal nonattainment or maintenance area. The General Conformity Rule was updated by USEPA in March 2010. Actions would conform to a SIP and would be exempt from a conformity determination if an applicability analysis shows that the total direct and indirect emissions from a project's activities will be less than specified emission thresholds, known as "do minimis levels. If determined not exempt or not de minimis, the preparation of an air quality conformity analysis could be required to determine conformity. Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction related or operational air quality impacts that could have the potential to exceed the de minimis threshold. The project area would still be classified as a State Non-Attainment Area for ozone, PM 10 and PM2,5 and a Federal Non-Attainment Area for ozone, PM1 0 and PM2,5. Alternative 2: Proposed Project Regional Construction Emissions General Conformity Analysis The results of the criteria pollutant calculations for the Proposed Project construction activities for each phase are shown in Table 10. These values are compared with the General Conformity de minimis annual thresholds. As shown in Table 10, all estimated emissions would be less than the applicable thresholds. It should be noted! that Table 10, conservatively shows all Proposed Project construction emissions in one year. However, project construction would occur over approximately two years and the annual emissions for a one-year period would be even less, Mid Basin Centennial Park Project Final EIR 5-31 At 2d� Section 5 Table 10: Proposed Project Regional Construction Emissions (TonsNear) Phrase Voc Nox co Pi PM2.5 Phase 1- Install pipeline 0.06 0.70 074 0.05 0.04 Build Shared Structures 10 10 100 100 100 Improve Heritage Site Phase 2- Well Drilling 0.03 0.30 0.24 0.01 0.01 Phase 3- Well Drilling and 0.09 0.42 0.31 0.02 0.02 Development. Phase 4- Well Development 0.03 0.42 0.31 0.02 0.02 and Development Phase 5- Well Development 0,03 0,42 0.31 0.02 0.02 Phase 6- Well 0.01 0.12 0.07 <0,005 <0.005 Drilling/Development Phase 7- Monitoring Well 0.03 0.32 0.26 0.01 0.01 Drilling, equip and skate park improvements Phase 8- Well Equip /Paving 0.02 0.06 0.07 0.02 <0.005 Total 0.24 2.76 2.31 0.18 0.12 General Conformity de 10 10 100 100 100 rninimis lin itslNEPA thresholds in tons per year Significant Impact? No No No No No See Appendix d for CeIEEMod Model outputs Regional Operational Emissions General Conformity Analysis The total annual criteria pollutant operational emissions for the Proposed Project are shown in Table 11 and are compared with the General Conformity de rrinimis annual thresholds. As shown in Table 11, annual emissions of all pollutants would be less than the applicable General Conformity thresholds. Table 111: Proposed Project Estimated Annual Operation Emissions (Tans /Year) Phase Voc NOx co PMtID PM2.5,; Well Redevelopment 0.04 0,40 0.18 0.01 0.01 General Conformity de minr'mis 10 10 100 100 100 limitsNEPA, thresholds in tons per year Significant impact? No No No No No Mid Basin Centennial Park '--j C n iProject Final EIR 5 -32 Section 5 General Conformity As shown in Table 12, the annual emissions the Proposed Project would generate would be less than the de minimis threshold for General Conformity, Therefore, additional analysis would not be required. Table 12: Proposed Project General Conformity Criteria Federal Status Nonattainment Threshold of Constructf Pollutant (Attainment, Rates Significance on Nonattainment, il,e., moderate, for Project Air Emissions Maintenance, or serious, Basin (TonsiYear Unclassified) severe, or (if applicable), extreme) (Tons/Year) Ozone (031 Nonattainment Extreme See Note 1 Oxides of Nitrogen See Note 2 10 2.76 (NOx) Volatile Organic Nonattamment Extreme 10 0.24 Compounds (VOC) Carbon Monoxide (CO) Maintenance Serious 100 2.31 Lead (Pb) Attainment N/A N/A N/A Particulate Matter less Nonattainment Moderate 100 012 than 2.5 microns in diameter (PM25) Particulate Matter less Maintenance Serious 100 0.18 than 10 microns in diameter (PM,(,) SUffUr Dioxide (S02) Attainment N/A N/A N/A WA - Nat A,,Poao, Nalel There are no thleShodSWO, he NoxaAd VOC (ROQJ Areshdo$ are NWe2 NOx .,d ROG (VOCE "o " r "I'l corlCanfa6nni btE Y10i NO ,,d Vic 3lrPtl",,i,Gi,.ip,C,,,j ..... Of C, and hreshdd1 a,. osklbli,hed far l h.W N�;o 3 Fu prp,ss d flh,, r9pW ROG J VOC ale d,,,flLal 5,mmo9 PCS P.uA 0 $ Envimnnienlai Projection 4U@,cy l013a U.$, Environmental Ponect*n Agewv 2013h. Alternative 3: Reduced Intensity Alternative Regional Construction Emissions General Conformity Analysis The results of the criteria pollutant calculations for Alternative 3 are shown in Table 13, All estimated emissions would be less than the applicable thresholds. Mid Basin Centennial Park �gdnf III Project Final EIR 5-33 4 Section 5 Table 13: Alternative 3 Regional Construction Emissions (Tori Phase Voc NOx co PM'10 PM2.5 Phase 1- Install pipeline 0.06 0.70 0.74 OM 0.04 Build Shared Structures improve Heritage Site Phase 2- Well Drilling CM 030 0.24 0.01 0,01 Phase 3- Well Drilling and 0.03 0A2 1 0,31 0.02 1 0.02 Development Phase 4- Well Development 003 0.42 031 0.02 0,02 and Development I Phase 6- Well 0.01 0.12 0.07 <0.005 <0,005 Drilling/Development Phase 7-Monitoring Well 0.01 0.12 0.07 <0.005 <0,005 Drilling, equip and skate park improvements Phase 8- Well Equip/Paving 0.03 0.32 026 0.01 0.01 Total 0,20 2,40 2,00 0.14 0.10 General Conformity da 10 10 100 100 '100 minimis limits/NEPA thresholds in tons per year I Significant Impact? No No No No No See Appendix B for CaIEEMod Model outputs. Regional Operational Emissions General Conformity Analysis The total annual criteria pollutant operational emissions for Alternative 3 would be less than those shown in Table 10 for the Proposed Project because there would be one less injection well to be redeveloped. Annual operational emissions of all pollutants would be less than the applicable General Conformity thresholds. General Conformity As shown in Table 14 the annual emissions the Proposed Project would generate would be less than the de minimis threshold for General Conformity- Therefore, additional analysis would not be required. Mid Basin Centennial Park roject Final EIR 5-34 1'93 6,114AP Section 5 Table 14. Alternative 3 General Conformity Criteria Federal Status Nonattainment Threshold of Construction Pollutant (Attainment, Rates Significance Emissions Nonattainment, ii.e., moderate, for Project (Tons/Year) Maintenance, or serious, Air Basin Unclassified) severe, or (if applicable) extreme) (TonslYear) Ozone (03) Nonattainment Extreme See Note I Oxides of Sep Note 2 10 2.40 Nitrogen (NOx) Volatile Organic Nonattainment Extreme 10 0.20 Compounds (VOC) Carbon Maintenance Serious 100 2.00 Monoxide (CO) Lead (Pb) Attainment N/A NIA NIA Particulate Nonattainment Moderate 100 0.10 Matter less than 2.5 microns in diameter (PM2 0 Particulate Maintenance Serious 100 014 Matter less than 10 microns in diameter (PM1D) Sulfur Dioxide Attainment N/A NIA NIA ' 'S Not0en WA= Not Applicable Note 1:71nure are nDthresholds for 0ti the NOx aiidVOC (ROG) thresholds aura appiicobic to Ca, conloandy Note 2: NOx and ROG (V(-)C) are mot criteria pnimants and concentrations irortat measured NOx and 'VOC are the principal pro UrsOrS (d 0, and thresholds are established for their emasion.5 Note 3: For purposes at this report, ROG and r/00 are Identical. Snuma, . FC3 2014; U.S. Poteuron Agency 2013a, U.S. (Environmental Protection Agency 2013b,_ Alternative 4: Pipeline Design Alternative Regional Construction Emissions General Conformity Analysis The regional construction emissions General Conformity analysis for Alternative 4 would be the same as the Proposed Project. Annual construction emissions of all pollutants would be less than the applicable General Conformity thresholds. W0 Centennial Park Mid Basin ial P f&nd6Project Final EIR 5-35 6**MI i ' _ Section 5 Regional Operational Emissions General Conformity Analysis The regional operational emissions General Conformity analysis for Alternative 4 would be the same as the Proposed Project. Annual construction emissions of all pollutants would be less than the applicable General Conformity thresholds. General Conformity Project emission would be the same as the Proposed Project, As shown in Table 12 the annual emissions Alternative 4 would generate would be less than the Cie minimis threshold for General Conformity. Therefore, additional analysis would not be required. Mitigation Measure No mitigation measures required. Level of Impact Alternative 1: No adverse impact Alternative Z Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4, Less than significant adverse impact IMPACT AIR-6: Would the project create objectionable odors affecting a substantial number of people? Odors can cause a variety of responses. The impact of an odor results from interacting factors such as frequency intensity, duration, offensiveness, location, and sensory perception, Odor is typically a warning system that prevents animals and humans from consuming spoiled food or toxic materials. Odor- related symptoms reported in a number of studies include nervousness, headache, sleeplessness, fatigue, dizziness, nausea, loss of appetite, stomach ache, sinus congestion, eye irritation,, nose irritation, runny nose, sore throat, cough, and asthma exacerbation. The SCAQMD's role is to protect the public's health from air pollution by overseeing and enforcing regulations, The SCAQMD's resolution activity for odor compliance is mandated under California Health & Safety Code Section 41700, and falls Linder SCAQMD Rule 402. This rule on Public Nuisance Regulation states; "A person shall not discharge from any source whatsoever such quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health or safety of any such persons or the public, or which cause, or have a natural tendency to cause, injury or damage to Mid Basin Centennial Park J I rnWreject Final ElR 5-36 Section 5 business or property. The provisions of this rule shall not apply to odors emanating from agricultural operations necessary for the growing of crops or the raising of fowl or animals." The SCAQMD indicates that the number of overall complaints has declined over the last five years. Over the last four years, odor complaints make up 50 to 55 percent of the total nuisance complaints. Over the past decade, odors from paint and coating operations have decreased from 27 to 7 percent and odors from refuse collection stations have increased from 9 to 34 percent, The SCAQMD recommends that odor impacts be addressed in a qualitative manner. Such an analysis shall determine whether the project would result in excessive nuisance odors, as defined Linder the California Code of Regulations and Section 41700 of the California Health and Safety Code, and thus would constitute a public nuisance related to air quality Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would be no construction activities or well redevelopment activities that would emit diesel fuel and increase the potential for adverse odor impacts. Alternative 2: Proposed Project Land uses typically considered associated with the long term generation of odors include; wastewater treatment facilities, waste-disposal facilities, and agricultural operations. The Proposed Project would not involve any of these land use activities. Long term odor impacts would be less than significant. Project construction and operational well redevelopment equipment activities would generate odors. Potential construction odors would include diesel exhaust ernissions and paving operations. There could be situations where construction activity odors would be noticeable by persons using the park facilities or working or living nearby. The odors would be temporary and would dissipate rapidly from the source with an increase in distance. Therefore, the Proposed Project odor impacts would not be objectionable to a substantial number of people and would be less than significant. Alternative 3: Reduced Intensity Alternative There would be lesser emissions of odors with Alternative 3 because one less injection well would be constructed and redeveloped. Similar to the Proposed Project potential odor impacts Under Alternative 3 would riot be objectionable to a substantial number of people and would be less than significant Mid Basin Centennial Park 1�gdnfjll Project Final EIR 5-37 Q;� - '8 Section 5 Alternative 4: Pipeline Design Alternative The analysis of odors for Alternative 4 would be the same as the Proposed Project, Similar to the Proposed Project potential odor impacts Under Alternative 4 Would not be objectionable to a substantial number of people and would be less than significant Mitigation Measures No mitigation measures required. Level of Significance after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact Mid Basin Centennial Park J8na6Project Final EIR 5-38 Section 5 5.3 BIOLOGICAL RESOURCES The following analysis is based on a Biological Assessment prepared for the Mid Basin Centennial Park Injection Well Project by the Orange County Water District Natural Resources Department in July of 2015. The Biological Assessment is presented in its entirety in Appendix C. 5.3.1 Affected Environment The Proposed Project involves the construction of four injection wells at Centennial Park and a monitoring well at the Heritage Museum. As shown in Figure 14, Centennial Park and the Heritage Museum are located on USGS Newport Beach Quadrangle Township 5 South, Range 10 West, and Section 22. The latitude and longitude coordinates for Centennial Park are 33- 43-19 and 117- 54-41 and the latitude and longitude coordinates for the Heritage Museum are 33-43-16 and 117- 54-37. Centennial Park Centennial Park is an 87 acre Community park. The park site is bounded by the Santa Ana River to the west, Fairview Road and the Greenville Banning Flood Control Channel to the east, Edinger Avenue to the north and Godinez High School to the south, Centennial Park features a combination of active and passive recreational uses that are centered on a large man-made lake. A loop road extends along the perimeter of the park site providing access to various locations in the park including several parking areas. Additionally, included within the park boundaries is the Santa Ana College Centennial Education Center and Child Development Center which provides adult education classes, pre-school age classes, and day care facilities. Heritage Museum The Heritage Museum is a 12-acre cultural and natural history learning center, The Heritage Museum site is bounded by Godinez High School to the north and west, Mitchell Child Development Center to the east, and industrial buildings to the south- The Heritage Museum contains a historic plaza featuring several buildings from the 1890-s, extensive flora gardens, citrus groves, and an agriculture demonstration garden area. Q:) Mid Basin Centennial Park �gdnf 4bProject Final EIR 5 -39 Section 5 Figure 14: USGS Map Mid Basin Centennial Park I Jgdnf _ 41JProject Final EIR 5-40 Section 5 Existing Vegetation Communities and Land' Cover Centennial Park Centennial Park is an improved park site that contains a combination of grass lands, native vegetation, ornamental landscaping and large canopy trees. Below is a description of the vegetation communities that are present in the locations at Centennial Park where the Proposed Project improvements would occur. A complete listing of vegetation communities identified at Centennial Park is shown in Table 15. Injection, Well Site MBI-2: The injection well would be constructed below an existing paved parking area. The site is characterized with two vegetation components; trees and turf. The only tree species at this site is Western Sycamore (PlatanUs racemosa). These trees are relatively young at 5-10 years of age and are growing amongst Tall Fescue turf. No understory species are located at this site. The site did not contain suitable habitat to support special status plant or special wildlife species. Injection Well Site MBI-3: The injection well would be constructed below an existing paved parking area. The site is surrounded by a number several species of ornamental trees and non - native, ornamental understory. The trees nearest the project area are Jacaranda (Jacaranda mimosifaiia). Further out from the project site are a number of large Aleppo Pines (Pines hatepensis). There are also a small number of Carrotwood Trees (Cupaniopsis anacardioides), and Western Sycamore trees along an access road which is adjacent to the parking area site where the injection well would be built. The understory of the adjacent planter beneath the Jacarandas is represented by several species of ornamental grasses dominated by Mexican Feathergrass (Stipatenuissima), and Fountain Grass (Pennisetum setaceum). The site did not contain suitable habitat to support special status plant or special wildlife species. Injection Well Site MBI-4: The injection well would be constructed below an existing paved parking area. The site is surrounded by a number several species of ornamental trees and non-native, ornamental understory. The trees nearest the project area are Jacaranda (Jacaranda mirriosifolia). Further out from the project along the main access road are a number of large Aleppo Pines (Pines hatepensis). The understory of the adjacent planter beneath the Jacarandas is represented by several species of ornamental grasses dominated by Mexican Feathergrass (Stipa teouissime), and Fountain Grass (Penniseturn setaceurn). The site did not contain suitable habitat to support special status plant or special status wildlife species. Mid Basin Centennial Park 1 &dnf4yroject Final EIR 5-41 Section 5 Injection Well Site NISI -5: The injection Well Would be constructed below an existing paved parking area. The site is surrounded by several species of trees and turf grass bordered by an ornamental groundcover of Japanese Honeysuckle (Lonicerajaporfica). The trees nearest the project site are dominated by Eucalyptus with Jacaranda (Jacaranda mimosifolia) and Western Sycamore (Platanus racemosa) on the fringes. Besides turf there are no additional layers to the understory except for a few patches of Japanese Honeysuckle which is not high value habitat for wildlife. The site did not contain suitable habitat to Support special status plant or special wildlife species. Shared Recreation/Communication Structure 1: Shared Recreation/Communication Structure 1 would be constructed on an improved asphalt area that is adjacent to an existing soccer field complex. There is minimal vegetation at this project site. The site is dominated by turf grass with two young sycamores that provide minimal wildlife value. The two Western Sycamores (Platanus racernosa) are less than 5 years of age and would be removed during the construction stage of this site. There is a large patch of Acacia (Acacia redole17S) located on the north and west side of this site but there should be minimal impact to this vegetation during the project. The site did not contain Suitable habitat to support special status plant or special wildlife species. Shared Recreation/Communication Structure 2: Shared Structure 2 would be constructed within the footprint of an existing rest room structure. There is very little vegetative diversity at this site and is composed of only two vegetation communities, turf and Eucalyptus. The Eucalyptus trees are specimen trees which surround the existing structure on three sides. The Eucalyptus trees would not be impacted during the construction operations for the Proposed Project, The site did not contain suitable habitat to support special status plant or special wildlife species. Table IS: Centennial Park Plant Vegetation Communities specie s Common name Native/Non -Native Acacia Redoiens Prostrate Acacia Non-Native Jacaranda mimosifolia Ratanus racernosa Jacaranda western S cannon Non-Native Native Eucalyptus cornaldulensps Red GUrn Eucal yptus Non-Native LqnicerqjOpqnica Japanese Honeysuckle Non-Native Pennisetuni setaccurr; Sti a tenuissima Fountain Grass Mexiean Feather Grass Non-Native Nan - Native Mid Basin Centennial Park�tq&nf tiProject Final EIR 5-42 Section 5 -Pinus ha—lepe nsis AI:N pa Pine —N �r" 1'1�e Cupanfapsis anacardroides Carrotwood ENon_ N aEye Heritage Museum The Heritage Museum contains two riparian areas that are separated by a small rolling hill that has been restored with native upland habitat. Both types of habitat areas are interpretive in form and do not function in a manner consistent with natural habitat settings. The vegetation communities at Heritage Museum are shown in Figure 15 and a listing of vegetation communities is presented in Table 16. The monitoring well construction work site is highly disturbed and covered with wood chips. Along the northern end of the site are a few immature ornamental trees, The site did not contain suitable habitat to support special status plant or special wildlife species. North east of the monitoring well site are two existing riparian patches that are separated by a rolling hill that has been restored with native vegetation. On the rolling hill there is a scattering native vegetation that includes; California sagebrush (Artemisia californica), California bush sunflower (Encefia calitomica), Black Sage (Salvia roelifera), White Sage (Salvia apiana) and California buckwheat (erigoonum fasciculatum). The site did not contain adequate amounts of suitable habitat to support special status plant or special wildlife species. Both, riparian patches at the Heritage Museum are dominated by Black Willow (Salix gooddingii), and Mulefat (Baccharis salicifolia). There are small patches of both Bulrush (Scirpus californicus), and Cattails (Typha latifolia) at the deepest, wettest part of both patchs of riparian vegetation. A few species of non-native trees are present including Brazilian Pepper (Schinus terobinthifolius), and Eucalyptus. Mid Basin Centennial Park &&n 4 14 1 Project Final EIR 5-43 Section 5 Figure 15. Heritage Museum Vegetation Map mw Mid Basin Centennial Park �96-,,Ue roject Final EIR 5-44 Section 5 Table 16 Heritage Museum Plant List species Baccharis saficifinha Common name Mulefat Nativelhion-NatIve Native Black Mustard Non-Native Bromus madritensis Red Brorne Non-Native Centaurea rnelitens)s Tocalote Non-Native Chrysanthemum coronarium Garland Chrysanthemum Non-Native El' mus condensatus Giant Wild Rye Native Hofioh2eiurn curassavicam Chinese Purslane Native Muhlenbergia Y gens Deer Grass Native Platanus raGernasa Western Syuarnore_ Native Safi)( gcoddin2ij Black ffHow Native Salix lasiole)2is Salvia a Tana Arroyo Willow White Sage Native Native Schinus terebinthifolius Brazilian Pepper Non-Native S62as californicus California Bulrush Native Typha, latitofia Arterni,50 cafifortfiGa Common Cattail California sagebrush Native Native Encefia calffornica Salvia melifera California bush sunflower Black Sage Native Native Salvia apiana White Sage Native Eri onnum fasciculatum California buckwheat Native Federal/State Special Status Plant Species To determine the potential for Federal and State Listed special status plant species to occur at Centennial Park and the Heritage Museum a review of the U.S. Department of Interior Information Manning and Conservation System Database and the California Department of Fish and Wildlife California Natural Diversity Data Base was conducted. A listing of Federal and State Listed special status plant species that have potential to occur within the project area is shown in Table 17. The determination on the potential for the species to occur within the project area of impact on project sites was based on the criteria shown below. Present: The species is commonly observed or observed within the project site within the last year. Mid Basin Centennial Park i J e nf eroject Final EIR 5-45 d- 4 Section 5 High: The project site supports suitable habitat and the species has been observed within last 2 years and within 2 miles of the project site Moderate: The project site supports suitable habitat and the species has not been observed within last 5 years and not within 5 miles of the project site. Low: The project site lacks suitable habitat for the species or if the project site has suitable habitat and the species has not been observed for over 5 years and/or observed more than 5 miles from the project site. Based on existing habitat conditions there are no Federal or State Listed special status plant species that have a moderate or higher potential! to occur at Centennial Park or at Heritage Museum, Table 17: List of Federal/State Special Status, Plant Species Mid Basin Centennial Park 2 If'&n U Project Final FIR 5-46 Federal State CINIPS General Potential occurrence Habitat Abronia villosa aurita NL. NL 1B,1 Coastal Salt Low: Lack of suitable habitat (Chaparral Sand Verbena) Marsh Aphanisma blitoides NL NIL 1 B.2 Coastal Bluff Low: Lack of suitable habitat (Aphanisma) Scrub Astragalus E E 1 B,1 Coastal Bluff Low: Lack of suitable habitat pyanostachytis vat, (Ventura Marsh Mllk- Scrub Vetch A triplex coultert NIL NL 112 Coastal Bluff Low: Lack of suitable habitat (Coulter's Saltbush) Scrub Atriplax pacifica NIL NL 1B.2 Coastal Bluff Low: Lack of suitable habitat (South Coast Saltscale) Scrub Atriplex serenana var. NL NL 1 B.2 Coastal Bluff Low Lack of suitable habitat davrdsanN Scrub Gentromadia parryi ssp, NL NL 18A Marshes, Low: Lack of suitable habitat Australis (Southern Tarplant) Swamps, Vernal Pools CordYlanthus rparitmus E E 18.2 Coastal Salt Low: Lack of suitable habitat ssp, Maritmus (Salt Marsh Birds Beak) Marsh Dudleya multicaulis NL NL 15.1 Coastal Bluff Low: Lack Of suitable habitat (Many - Stemmed Dudl2�--.— Sc r u b Eryng umaristulatum L E E .. 1BA Vernal Pool Low: Lack of suitable habitat Mid Basin Centennial Park 2 If'&n U Project Final FIR 5-46 Section 5 var. parishh Complex (San Diego Button- celea�-- Heflanthus nuttallfi sad. NIL NL 1A Marshes, Low Lack of suitable habitat Parishii Swamps, (Los Angeles Sunflower Isociarria menzi , esi , i , var. NL NL 1B.2 Coastal Bluff Low: Lack of suitable habitat decumbens Scrub (Decumbent Goldenbush) Lasthertia giabrata ssp. NIL NL I B.1 Coastal Salt Low: Lack of suitable habitat coulteirl Marsh (Coulter's Goldfield) Nasturtium gambeth E T I B.1 Marshes and Low: Lack of suitable habitat (Gambel's Water Cress)_ Swamps Navarretra prostrate NL NIL 1B. 't Coastal Bluff Low: Lack of suitable habitat (Prostrate Vernal Pool Scrub, Vernal Navarratia) Pool Complex Nemacaulis denudate NL NL 1B.2 Coastal Dunes Low: Lack of suitable habitat var. denudate (Coast Wooly-Fleads) Suaada esteroa NL NL 1B.2 Marshes and Low: Lack of suitable, habitat (Estuary Seablite) Swamps Syrnpriyotrichum NL NL 1B.2 Freshwater Low! Lack Of suitable habitat defolfalum Wetlands (San Bernardino Aster) C FS P Sew I A P I a int , in r 1, dL11 ed a. r, n,t , n C a I Inrnln t" Endoroered 1B,Plant4rare hirEaemd orendanpi in usirnrna and e5q�Nrle T ThrealOnwd 2 Fraplis r3ts lnremeimd on emdanderdd C')rn'na i"A is ra cr.... ... wi 0jeWierE '�Sc- si qalat si)&Cess of conneoi 3 Ram JbWt Whi6.M 10, nsed M,,,e G M,11160011 00F L 1tVq 4-Pima & Mimed disinbUiriri NL-N01 Listed QNP5 TheqAt RAA StVd. Usti,tsi (12iflifultiia %Q0aUpqrd Species Act. GQFQ 9 Ser*usly ErUargerea 2 Fa't' R'd.n"md FP -Fully Prdfeded N01 vary E'danDmed T -L:" a ' 5N L'Z -r�.tl FederallState Listed Special Status Wildlife Species To determine the potential for Federal and State Listed special status wildlife species to occur within Centennial Park and the Heritage Museum a review of the U.S. Department of Interior Information Planning and Conservation System Database and the California Department of Fish and Wildlife California Natural Diversity Data Base was conducted. A listing of Federal and State Listed special status wildlife species with the potential to occur within the project area is shown in Table 18. The determination on the potential for the species to occur within the area of impact on the project sites was based on the following criteria. Mid Basin Centennial Park I-,e dnf46Project Final EIR 5-47 Section 5 Present: The species is commonly observed or observed within the project site within the last year. High: The project site supports suitable habitat and the species has been observed within last 2 years and within 2 miles of the project site. Moderate: The project site supports suitable habitat and the species has not been observed within last 5 years and not within 5 miles of the project site. Law: The project site lacks suitable habitat for the species or if the project site has suitable habitat and the species has not been observed for over 5 years arliftr observed more than 5 miles from the project site. Based on existing habitat conditions there are no Federal or State Listed special status wildlife species that have a moderate or higher potential to occur at Centennial Park or at Heritage Museum. Table 18: List of Federal Special Status Wildlife Species Species Fed State CNPS Habitat Potentjai Occurrence AsptdosceYs hypotythra NL SSC NIL Low level coastal li Lack of suitable (Orangethrcat Wli sage scrub, habitat chaparral, grassland Athene cuniculada NIL SSC NIL Annual Grasslands Low: Lack Of Suitable (Burrowing (awl) habitat Branchinecta E NIL Vernal Pools Low: Lack Of Suitable,, sandiegonnsis habitat (San Diego Fairy Shrimp) Charadrius nivosus T NIL NIL Sandy Beaches Low: Lack of suitable (Western Snowy Plover) habitat Coccyzus arneficanus T E NIL Riparian Woodlands Low: Lack of suitable occidentahs habitat (Western Yellow-Billed Cuckoo) Empidonax traffli E E NIL Riparian Woodlands Low Lack of suitable extimus habitat (Southwestern Willow Flycatcher) Eumops perofis NIL SSC NIL Cracks in Man Made Low: Lack of suitable (Western Mastiff Bat) Structures habitat Lateraflus jarnaicensis NL T NL Washes and Sandy Low: Lack of SUitable XtUrnicuius Areas habitat (California Black Rail) Mid Basin Centennial Park ),�i8q&nor _ 46Project Final FIR 5-48 Section 5 Nyctinom()PS fnaWONS NL SSC NIL Rock Outcrops Low: Lack Of suitable (Big Free-Tailed Bat) I habitat Pprognathus E NIL NIL Coastal Plains Low: Lack Of Suitable Ongtrnefi)bras pactficus habitat (Pacific Pocket mouse) Phrynosoma blainvilhi NL SSC NL Washes and Sandy Low: Lack Of suitable (Coast Horned Lizard) Areas habitat Pohoptila calitornica T SSC NL Coastal sage scrub Low: Lack Of Suitable cafifornica habitat Coastal California gnatcatcher Raflus longirostris E E NL Salt Marshes Low: Lack of suitable levipes habitat (Light Facted Clapper Rail) Riparia riparia NIL T NIL Riparian Low Lands Low Lack of suitable (Bank Swallow) habitat Sorex ornalus NIL SSC NI_ Coastal Salt Marshes Low: Lack of suitable salicornicus habitat (Southern California Saftmarsh Shrew) Sternuia antfilarum E E NL Sandy Beaches Low: Lack of suitable browni habitat (California Least Tern) Taxidea taxis NL SSC NL Forest Lands Low: Lack of suitable (American Badger) habitat Vireo befli pusdifus E E NL Riparian Vegetation Low: Marginally suitable (Least Bell's Vireo) habitat NL-Not U&Iefl E -Endangered TaThreatened SS(.-species special calt'efn 1 B I= Swiaus[y Endirgered I B 2= rnirly Endarigerqd Wildlife Summary Centennial Park There was no wildlife species determined to be at risk at the project work sites. The trees adjacent to the sites have potential for foraging bird species throughout the year and nesting during the bird breeding season. Centennial Lake is a man-made lake, Historically, the lake has been planted with fish from California Department of Fish and Wildlife, mostly trout during the winter months. However, because of poor water circulation and water quality there has been no recent fish plants. At this time it is unknown if additional fish plants would occur, 5-49 Mid Basin Centennial Park inje nfgbProject Final EIR Section 5 Heritage Museum There was no wildlife species determined to be at risk at the project site. The riparian patches at the Heritage Museum site does have the potential for foraging bird species throughout the year and nesting during the bird breeding season. Although there is Suitable habitat for Least Bell's Vireo, it is unlikely the species would Occur do to the small size of the habitat, its isolation and lack of connectivity to neighboring parcels of habitat, As indicated in Table 18 there would be low potential for special status wildlife species to occur within the area of impact. Federal and State Jurisdictional Aquatic Resources Waters of the United States A water body is considered Waters of the U.S. if it is: (1) traditional navigable water (TNW); (2) wetlands adjacent to a TNW; (3) non-navigable tributaries of TNW that have perennial or seasonal flow of water; and (4) wetlands that are adjacent to non-navigable tributaries of TNW that have perennial or seasonal flow of water. There are three water bodies within the vicinity of the project area; the Santa Ana River, Greenville Banning Flood Control Channel and Centennial Lake. The Santa Ana River is a perennial water body that drains into the Pacific Ocean. The Pacific Ocean is navigable water and therefore the Santa Ana River is classified as a tributary to a navigable water and Waters of the Ul.S, The Federal jurisdiction along the Santa Ana River extends to the ordinary high water mark. The segment of the Santa Ana River within the project area is concrete lined and void of any vegetation, The Greenville-Banning Flood Control Channel is located along the frontage of Centennial Park and the Heritage Museum and is approximately 12 feet in width with a soft bottom and soft side slopes. The channel drains into the Santa Ana River and ultimately into the Pacific Ocean, The Pacific Ocean is navigable water, the Santa Ana River is classified as a tributary to a navigable water and therefore the Greenville-Banning Flood Control Channel is also classified as a tributary to a the Waters of the U.S, Centennial lake is manmade lake with an impermeable bottom and is not classified as Waters of the U.S, Waters of the State of California According to the State Water Code, Waters of the State are defined as any surface water, groundwater or wetlands within the boundary of the state. Based 1k, I Z") Mid Basin Centennial Park le&n Project Final EIR 5-50 Section 5 on the Santa Ana River and the Greenville Banning Flood Control Channel are classified as Waters of the State. Centennial lake is manmade lake with an impermeable bottom and is not classified as Waters of the State. Wetland Waters of the United States and State California Wetland Waters are a subset of jurisdictional Waters of the U.S. and the State. Generally, wetlands are lands where saturation with water is the dominant factor determining the nature of soil development and the types of plant and animal communitiies living in the soil and on its surface. Presently, there is no single definition of wetlands recognized by the state and the federal government. However, the state and federal definitions do share common terms and concepts. For purposes of this classification, wetlands must have one or more of the following three attributes: (1 ) at least periodically the land supports hydrophytes; (2) the substrate is predominantly undrained hydric soil; and (3) the Substrate is non -soil and is saturated with water or covered by shallow water at some time during the growing season of each year. 5.3.2 Regulatory Framework The following federal and state regulatory programs are applicable to the Mid Basin Centennial Park Injection Well Project. Federal Regulations Federal Endangered Species Act The Federal Endangered Species Act (FESA) designates threatened and endangered animals and plants and provides measures for their protection and recovery. The Take of listed animal and plant species in areas under the federal jurisdiction is prohibited without obtaining a federal permit. A Take is defined as to harass, harm, pursue, hunt, shot, wound, kill, trap, capture or collect or attempt to engage in any such conduct. Harm includes any act which kills or injures fish or wildlife, including significant habitat modification or degradation that significantly impairs essential behavioral patterns of fish or wildlife. Activities that damage the habitat of listed species require approval from U.S. Fish and Wildlife, Service (USFWS) for terrestrial species or from National Marine Fisheries Service (NMFS) for marine species. FESA also requires determination of critical habitat for listed species and impacts to the critical habitat is prohibited. ESA contains two pathways for obtaining permission to take listed species, Under Section 7 of FESA, a federal agency that authorizes, funds or carries out a project that may affect a listed species or its critical habitat Most consult with USFWS or NMIFS, to ensure that their actions do not jeopardize the continued Mid Basin Centennial Park �tenl '.0 _ Cy( roject Final EIR 5-51 Section 5 existence of endangered or threatened species or result in the destruction or modification of the critical habitat of these species. A Biological Opinion (60) would be prepared by USFWS and NMFS to determine if the activity would jeopardize the continued existence of the listed species. If the BO determines that the activity Would not threaten the existence of the listed species and a no jeopardy opinion is provided, then the project may proceed. If the BO finds that the project would result in jeopardy to the listed species (jeopardy opinion!), then reasonable and prudent measures would need to be incorporated into the project to reduce potential effects to a level that would not be likely to jeopardize the continued existence of the species. Under Section 10 of FESA private parties with no federal nexus may obtain an Incidental Take Permit to harm listed wildlife species incidental to the lawful operation of a; project, To obtain an Incidental Take Permit, the applicant must develop a habitat managernent plan that specifies impacts to listed species, provides conservation measures and alternatives to minimize impacts, If USFWS finds that the habitat conservation measures would not appreciably reduce the likelihood of the survival and recovery of the species, USFWS would issue an incidental take permit. Migratory Bird Treaty Act The Migratory Bird Treaty Act implements international treaties between the United States and other nations that protect migratory birds, including their nests and eggs, from killing, hunting, pursuing, capturing, selling and shipping unless expressly authorized or permitted. State Regulations California Environmental Quality Act The California Environmental Quality Act (CEQA) was enacted in 1970 to provide for full disclosure of environmental impacts before issuance of a permit by a state or local public agency. In addition to state and federally listed species, sensitive plants and animals receive consideration under CEQA. Sensitive species include wildlife Species of Special Concern listed by California Department of Fish and Wildlife (CDFW) and plant species on the California Native Plant Society list 1A, 1B or 2. California Endangered Species Act The California Endangered Species Act (CESA) provides protection and prohibits the take of plant, fish and wildlife species listed by the State of California. Unlike FESA, state-listed plants have the same degree of protection as wildlife, A Take is defined similarly to FESA and it is prohibited for both listed and candidate Mid Basin Centennial Park �9624i Project Final EIR 5-52 Section 5 species. A Take authorization may be obtained from the California Department of Fish and Wildlife (CDFW) under Section 2091 and 2081 of CESA. Section 2091 of CESA, similar to Section 7 of FESA provides for consultation between a state lead agency under the California Environmental Quality Act and CDFW, with issuance of take authorization if the project does not jeopardize the listed species. Section 2081 of CESA allows take of a listed species for educational, scientific or management purposes. California Fish and Game Code Section 1600 The State of California defines Waters of the State as any surface water or groundwater, including saline waters within the boundaries of the State. In accordance with Section 1600 of the Fish and Game Code, CDFW must be notified prior to beginning any activity that would obstruct or divert the natural flow of, use material from or deposit or dispose of material into a river, stream, or lake, whether permanent, intermittent or ephemeral water bodies. The notification occurs through the issuance of a Streambed Alteration Agreement- CDFW has 60 days to review the proposed actions and propose measures to protect affected fish and wildlife resources. The final proposal that is mutually agreed upon by CDFW and the Applicant is the Streambed Alteration Agreement. California Fish and Game Code Fully Protected Species The legislature of the State of California designated species as fully protected prior to the creation of the California Endangered Species Act. Lists of fully protected species were initially developed to provide protection to those animals that were rare or faced possible extinction and included fish, mammals, amphibians, reptiles and birds. Most fully protected species have since been listed as threatened or endangered under California Endangered Species Act and/or the Federal Endangered Species Act. These species may not be taken or possessed at any time, with the only exception being permits issued for limited scientific study, California Fish and Game Code Sections 3503, 3513, 3800, 3801 These California Fish and Game Code Sections protect all birds, birds of prey and all non-game birds, as well as their eggs and nests, for species that are not already listed as fully protected and that occur naturally within the State. Specifically, it is unlawful to take any raptors or their nests and eggs. 5.3.3 Thresholds of Significance 1. Would the project have a substantial adverse impact, either directly or through habitat modifications, on any species identified as a candidate, sensitive or special status species in local or regional plans, policies or 1, 1 Q..,Oo Mid Basin Centennial Park '-jg [ 6pnf 11 Project Final EIR 5-53 d4 Section 5 regulations or by the California Department of Fish and Game or U.S. Fish and Wildlife Services? 2. Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local regional plans, policies and regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? 3. Would the project have a substantially adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act through direct removal, filling hydrological interruption, or other means? 4. Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? 5.. Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? 6. Would the project be in conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? 5.3.4 Environmental Consequences IMPACT BtCI-1: Would the project have a substantial adverse impact, either directly or through habitat modifications, on any species identified as a candidate, sensitive or special status species in local or regional plans, policies or regulations or by the California Department of Fish and Game or U.S. Fish and wildl',ife Services? Alternative 1: No Federal Action /No Project As shown on Table 17 and Table 18 there would be low potential for special status plant and special status wildlife species to occur at Centennial Park or at the Heritage Museum. Under Alternative 1, the project would not be implemented. The project area would continue to have low potential for special status plant and wildlife species to be present. Alternative : Proposed Project As shown on Table 17 and Table 18 there would be low potential for special status plant and special status wildlife species to occur at Centennial Park or at the Heritage Museum site. Additionally, field surveys conducted by OCWD did not identify the presence of or indications of any special status plant species or special status wildlife species at either site. At both sites there were not t Mid Basin Centennial Park �1 '&dn I g1gDroject Final EIR 5 -54 Section 5 adequate amounts Of Suitable habitat to support special status plant or special status wildlife species. Therefore, the implementation of the Proposed Project would not result in any adverse short-term construction related impacts or adverse long term operational impacts to any special status plant or special status wildlife species, Centennial Lake is a man-made lake that does not contain suitable habitat to Support native fish. Centennial lake has historically been planted with non-native fish. The water that would be backwashed from the injection wells would be drinking water quality water and would be a relatively small amount compared to overall amount of water in the lake. The periodic back flushing of the well water would improve circulation at the lake help which would help to increase dissolved oxygen levels and improve water quality for aquatic life. Alternative 3: Reduced Intensity Alternative As shown on Table 1' 7 and Table 18 there would be low potential for special status plant and special status wildlife species to occur at Centennial Park or at the Heritage Museum. The implementation of Alternative 3 Would not result in any adverse impacts to any special status plant or special status wildlife species. Alternative 4: Pipeline Design Alternative As shown on Table 17 and Table 18 there would be low potential for special status plant and special status wildlife species to occur at Centennial Park or at the Heritage Museum, The implementation of Alternative 4 would not result in any adverse impacts to any special status plant or special status wildlife species. Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact IMPACT B10.2: Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in Il regional plans, policies and regulations or by the California Department of Fish and Game or US Fish and Wildlife Service? Mid Basin Centennial Park � lednfgeroject Final EIR 5-55 Section 5 Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction activity occurring that could have the potential to adversely impact sensitive vegetation communities at Centennial Park or at the Heritage Museum. Alternative 2: Proposed Project Centennial Park Under the Proposed Project, the project components would primarily be constructed below existing paved parking areas and roads or within the footprint of existing structures. The locations where the proposed construction activities would occur do not contain any sensitive natural communities. The implementation of the Proposed Project would not result in adverse impacts to any sensitive natural communities. Heritage Museum As shown in Figure 6, the construction activities for the monitoring well would occur on an existing dirt parking area. The construction of the monitoring weal would not adversely impact any sensitive vegetation communities. Alternative 3: Reduced Intensity Alternative Centennial Park Under Alternative 3, the locations where the proposed construction activities would occur do not contain any sensitive natural communities. Potential impacts to sensitive vegetation communities would be at the same level as the Proposed Project and would be less than significant, Heritage Museum Under Alternative 3, the locations where the proposed construction activities would occur do not contain any sensitive natural communities. Potential impacts to sensitive vegetation communities would be at the same level as the Proposed Project and would be less than significant. Alternative 4: Pipeline Design Alternative Centennial Park Under Alternative 4, the locations where the proposed construction activities would: occur do not contain any sensitive natural communities. Potential impacts to sensitive vegetation communities would be at the same level as the Proposed Project and would be less than significant, Mid Basin Centennial Park i 2 'g&nfgLfroject Final EIR 5-56 - Section 5 Heritage Museum Under Alternative 4, the locations where the proposed construction activities would Occur do not contain any sensitive natural communities. Potential impacts to sensitive vegetation communities would be at the same level as the Proposed Project and would be less than significant. Mitigation Measure No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact IMPACT BIO-3: Would the project have a substantially adverse effect on federally protected wetlands as defined by Section 404 of the Clean Water Act through direct removal, filling hydrological interruption, or other means? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. Within the project area, the Santa Ana River and the Greenville Banning Flood Control Channel would continue to be classified as Waters of the U.S. and Stater Alternative 2: Proposed Project A wetland assessment was conducted on the project site in accordance with the Regional Supplement to the U.S. Army Corps of Engineers Wetland Delineation Manual Arid Region West. Based on the U.S. Army Corps of Engineers Wetland Delineation Manual, a three parameter approach was used to identify wetland Waters of the U.S. These three parameters include; (1) the presence of wetland vegetation, (2) the presence of wetland hydrology and (3) the presence of hydric soils. The Proposed Project involves three primary construction activities, Placement of the Water Supply Pipeline across the Santa Ana River Edinger Avenue Bridge, Construction of the water supply and back flush pipelines, construction of 4 injection wells and construction of 2 shared structures at Centennial Park. A summary of the wetland parameters at the locations where the construction activities would occur is shown in Table 19, Mid Basin Centennial Park I reject Final EIR 5-57 WNU Section 5 Table 19: Summary of Wetliand Parameters Activity Presence of wetland vegetation Presence of wetland hydrology Presence of hydric soils. Weiland Determination Santa Ana Rivet, No No No Not Present Edinger Avenue Crossing —Bridge Construction of the No No No Not Present water supplylback Flush pipelines, injection wells and shared structures Heritage MIJSeLJM No Na No N'ot Present Monitoring well I Santa Ana River Edinger Avenue Bridge Crossing The proposed water suipply pipeline would be extended across the nose piers of the Santa Ana River Edinger Avenue Bridge. This segment of the Santa Ana River is concreted lined and void of vegetation. The placement of the pipeline would be above the ordinary high water mark and would not involve any construction activities that would impact Waters of the U.S./State or Welland Waters of the U,SJState- Construction of the Water Supply /Back flush Pipelines, Injection Wells and Shared Structures The proposed injection well sites, water supply pipeline alignment and shared communication structures would be constructed on existing paved parking areas and roads or within the footprint of existing structures. No Waters of the U.S./State or Wetland Waters of the U.S./State are located in the areas where these components of the Proposed Project would be constructed. The Proposed Project includes the construction of back flush pipelines that would discharge well water into Centennial Lake and the Greenvillle Banning Flood Control Channel. The back flush pipeline to Centennial Lake would tie into an existing wet well that was formerly used to irrigate the landscape at Centennial Park. The construction of the back flush pipeline to Centennial Lake would not impact Welland Waters of the U.S./State or Waters of the U.S.YState. The bark flush pipeline to the Greenville Banning Flood Control Channel would discharge into an existing gutter catch basin and then drain into the Greenville Banning Flood Control Channel, The construction of the back flush pipeline to Greenville Banning Flood Control Channel would not impact Weiland Waters of the U.S,/State and Waters of the U.S. / State, I 04'�J Mid Basin Centennial Park �t'q& n,16Project Final EIR 5-58 Section 5 Heritage Museurn Monitoring Well The area of construction impact would occur on a disturbed upland area that is presently used as a parking area. There are no Waters of the U.S./State or Wetland Waters of the U.S,/State located in the area where the monitoring well Would be constructed. Alternative 3: Reduced Intensity Alternative Under Alternative 3, potential impacts to Waters of the U.S. and State would be at the same level as the Proposed Project, No temporary or permanent impacts to Waters of the U.S./State or to Wetland Waters of the U.S./State would occur. Alternative 4: Pipeline Design Alternative Under Alternative 4, potential impacts to Waters of the U.S. and State will be at the same level as the Proposed Project. No temporary or permanent impacts to Waters of the U.S./State or to Wetland Waters of the U.S./State would occur. Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact IMPACT BIO-4., Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction activity occurring that could have the potential to disrupt the breeding patterns of nesting birds. Alternative 2: Proposed Project Both Centennial Park and the Heritage Museum contain several trees that provide nesting opportunities for migratory birds. The proposed construction activities at Centennial Park and at the Heritage Museum would not remove any trees that could contain active nests. Therefore, potential direct impact to nesting birds would be avoided, The Proposed Project would involve the operation of Mid Basin Centennial Park 2,96, 2 96 Project Final EIR 5-59 Section 5 heavy equipment at Centennial Park and at the Heritage Museum, There is the potential that the operation of the heavy equipment could disrupt the breeding patterns of migratory birds if they are nesting in nearby trees. To minimize noise impacts to nesting birds, a 24-foot high noise wall would be provided around each injection well site and construction equipped would be fitted with noise reduction features, such as mufflers and engine shrouds to reduce potential noise impacts to nesting birds. With the implernentation of Mitigation Measures BIO-1 and B10-2 potential significant adverse impacts to migratory birds would be reduced to a less than significant level. Alternative 3: Reduced intensity Alternative Under Alternative 3, one less injection well would be constructed. There would be less construction activity and less potential for migratory birds to be adversely impacted by construction noise. Even though there might be less potential for disruption to nesting birds, construction activities under Alternative 3 would still have the potential to result in significant adverse impacts to the breeding patterns of migratory birds. With the implementation of Mitigation Measures BIO-1 and 1310-2 potential significant adverse impacts to migratory birds would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, portions of the pipeline alignment would extend through open space. The open space area where the pipeline alignment would occur has Jess trees and nesting opportunities for migratory birds to be adversely irripacted by construction noise impacts. Even though there might be less potential for disruption to nesting birds, the construction activities under Alternative 4 would still have the potential to result in significant adverse impacts to the breeding patterns of migratory birds. With the implementation of Mitigation Measures BIO- 1 and BIO-2 potential to significant adverse impacts to migratory birds would be reduced to a less than significant level, Mitigation Measures BIO-1: At each well site a 24 foot noise wall will be provided around the work area to minimize noise impacts, BIO-2: All heavy equipment will be equipped with noise reduction features, such as mufflers and engine shrouds. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with Mitigation Measure B10-1 and BID-2. Mid Basin Centennial Park AC&Ai Project Final EIR 5-60 Section 5 Alternative 3: Less than significant adverse impact with Mitigation Measure 810-1 and B10-2. Alternative 4: Less than significant adverse impact with Mitigation Measure 610-1 and B10-2, IMPACT BIO-5: Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented, There would not be any construction activity occurring within Centennial Park or at the Heritage Museum that could have the potential to conflict with City of Santa Ana policies that provide for the protection of biological resources, Alternative 2: Proposed Project The City of Santa Ana General Plan provides polices for the conservation of special status species. Biological studies conducted on the project site did not identify the presence of special status species or suitable habitat to support to special status species. Therefore, the implementation the Proposed Project would not be in conflict with City of Santa Ana policies that provide for the protection of biological resources. Alternative 3: Reduced Intensity Alternative Under Alternative 3, the potential for conflicts with City of Santa Ana policies that provide for the protection of biological resources would be at the same level as the Proposed Project. No adverse impacts would occur. Alternative 4: Pipeline Design Alternative Under Alternative 4, the potential for conflicts with City of Santa Ana policies that provide for the protection of biological resources would be at the same level as the Proposed Project. No adverse impacts would Occur. Mitigation Measure No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3. No adverse impact Alternative 4: No adverse impact Mid Basin Centennial Park �j6tnf 1Project Final EIR 5-61 - 6 Section 5 IMPACT BIO-6: Will the project be in conflict with the provisions of an adopted Habitat Conservation Plarr, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? Alternative 1: No Federal Action/No Project The project site is not included in any Habitat Conservation Plan or Natural Community Conservation Plan. Alternative 2: Proposed Project The project site is not included in any Habitat Conservation Plan or Natural Community Conservation Plan. Therefore, implementation of the Proposed Project would not result in any conflicts with any provisions provided in a Habitat Conservation Plan or Natural Community Conservation Plan. Alternative 3: Reduced Intensity Alternative The project site is not included in any Habitat Conservation Plan or Natural Community Conservation Plan, Therefore, implementation of Alternative 3 would not result in any conflicts with any provisions provided in a Habitat Conservation Plan or Natural Community Conservation Plan. Alternative 4: Pipeline Desigin Alternative The project site is not included in any Habitat Conservation Plan or Natural Community Conservation Plan. Therefore, implementation of Alternative 4 would not result in any conflicts with any provisions provided in a Habitat Conservation Plan or Natural Community Conservation, Plan, Mitigation Measure No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3. No adverse impact Alternative 4: No adverse impact Mid Basin Centennial Park '-jeenfffroject Final FIR 5-62 Section 5 ME, NNKOKWLUIITTIRL•� The following analysis is based on a Cultural Resources Report prepared for the Mid Basin Centennial Park Injection Well Project by Bonterra/Psomas, in August of 2015. The Cultural Resources Report is presented in its entirety in Appendix D. 5.4.1 Affected Environment Prehistoric Background Several chronologies are generally used to describe the sequence of the later prehistoric periods of Southern California, William Wallace in 1955 developed the first comprehensive California chronologies and defines four periods for the southern coastal region. Although now more than 50 years old, the Wallace chronology has provided a general framework for Southern California prehistory that remains valid today. Horizon 1: Early Man or Paleo-Indian Period (111,000 BCE to 7,500 BCE 1) While initially termed Early Man Horizon by Wallace, this early stage of human occupation is commonly referred to as the Paleo-Indian Period today, At inland archaeological sites, the surviving material culture of this period was primarily lithic, consisting of large, extremely well made stone projectile points and tools (e.g., scrapers and choppers). Encampments were, probably temporary, located near major kills or important resource areas, Horizon It: Milling Stone Assemblages (7,500 BCE to 1,000 BCE) Encompassing a broad expanse of time, the Milling Stone Period was named for the abundant milling stone tools associated with sites of this period. These tools, the mano and metate, were used to process small, hard seeds from plants associated with shrub-scrub vegetation communities. An annual round of seasonal migrations was likely practiced, with movements coinciding with ripening vegetal resources and the periods of maximal availability of various animal resources. Along the coast, shell midden sites are common site types. Some formal burials, occasionally with associated grave goods, are also evident. Horizon III: Intermediate Cultures (1,000 SCE to 750 CE) The Intermediate Period is identified by a mixed strategy of plant exploitation, terrestrial hunting, and maritime subsistence strategies. Chipped stone tools, such as projectile points, generally decrease in size, but increase in number. Abundant bone and shell remains have been recovered from sites dating to these time periods. In coastal areas, the introduction of the circular shell fishhook and the growing abundance of fish remains in sites over the course of the period suggest a substantial increase in fishing activity during the Intermediate Horizon. It is also Mid Basin Centennial Park 1 66 11 Project Final EIR 5-63 Z) �-nf n Section 5 during this time period that mortar and pestle use intensified dramatically. The mano and rnetate continued to be in use on a reduced scale, but the greatly intensified use of the imortar and pestle signaled a shift away from a subsistence strategy based on seed resources to that of the acorn. It is probably during, this time period that the acorn became the food staple of the majority of the indigenous tribes in Southern California. This subsistence strategy continued until European contact, Material culture became more diverse and elaborates and included steatite containers, perforated stones, bone tools, ornamental items, and asphalt adhesive. Horizon IV: Late Prehistoric Cultures (750 CE to 1769 CE) During the Late Prehistoric Period, exploitation of many food resources, particularly marine resources among coastal groups, continued to intensify. The material culture in the Late Prehistoric Horizon increased in complexity in terms of the abundance and diversity of artifacts being produced. The recovery and identification of a number of small projectile points during this period likely suggests a greater utilization of the bow and arrow, which was likely introduced near the end of the Intermediate Period. Shell beads, ornaments, and other elements of material culture continue to be ornate, varied, and widely distributed; the latter evidence suggests elaborate trade networks. Western Riverside County, Orange County, and the Los Angeles Basin area were considered part of the"Shoshonean" tradition, which could be related to a possible incursion of Takic speakers into these areas during this period. The Late Prehistoric Period includes the first few centuries of early European contact (1542-1769 CE); it is also known as the Protohistoric Period as there was a low level of interaction between native Californians and Europeans prior to Porto4s overland expedition in 1769. In the few centuries prior to European contact, the archaeological record reveals substantial increases in the indigenous population. Some village sites could have contained as many as 1,500 individuals. Apparently, many of these village sites were occupied throughout the year rather than seasonally. This shift in settlement strategy was likely influenced by improved food procurement and storage technology, which enabled population growth and could have helped stimulate changes in sociopolitical organization. Ethnographic Background At the time of Spanish contact the project area was believed to have been inhabited by the Gabrielino near the eastern extent of their ethnographic territory. The name "Gabrielino" identifies those people who came under the control of Mission San Gabriel Arcbngel and included the inhabitants of most of current-day Los Angeles and Orange Counties and portions of Riverside and San Bernardino Counties. Today, many Gabrielinc, prefer to be known as Jongva. According to tr Mid Basin Centennial Park tq&nfg6Project Final EIR 5-64 Section 5 the ethnographic evidence, the Gabrielino territory included the Coastal plain of Los Angeles and Orange Counties extending frorn Topanga Canyon in the north to Aliso Creek in the south, and eastward of Mount Rubidoux in Western Riverside County, Their territory also included Santa Catalina, Sari Clemente, and San Nicolas Islands, Unfortunately, the Gabrielino are one of the least documented of the native peoples of California because they were one of the first groups to suffer the effects of foreign diseases brought by the Spanish and the subsequent migration of foreigners who arrived in the region. Gabrielino territory occupied one of the richest environmental habitats in all of California, The territory included four macro-environments: the Interior Mountains/Adjacent Foothills, the Prairie, the Exposed Coast, and the Sheltered Coast. These diverse macro-environments, and the resources contained within each, enabled the Gabrielino to develop one of the most complex cultures of any of the native California groups, The abundance of resources provided many opportunities for the Gabrielino to exploit native plants and animals. This, in turn, allowed the population to settle in small villages throughout the territory. Permanent villages evolved in resource-rich areas near rivers, streams, and along the coast. Secondary, or sateltlite, villages were also established nearby. History The major historic periods, as defined below, for the greater Southern California area are defined! by key events documented by participants, witnesses, historians, and cartographers, • Spanish Period (117691822) • Mexican Period (1822-1848) • American Period (1848—Present) Spanish explorer Juan Rodriguez Cabrillo made a temporary landfall at the Chumash village of Sisolop (present-day Ventura) on October 12, 1542. He was the first of several early expiorers, representing several nations, to explore what is referred to as the Alta California coast. The end of the prehistoric era in Southern California was marked by the arrival of the Gaspar de Portiola overland expedition from New Spain (Mexico) and the founding of the first Spanish settlement at San Diego on July 16, 1769, With the onset of the Spanish Period, the Gabrielino first came into direct contact with Europeans when the Portola expedition passed through the San Gabriel Valley where the expedition camped briefly as they continued west toward Ventura- During this period 21 Franciscan missions were established. The missions were charged with administering to the natives within their areas, but failed to give the Native Americans the skills needed to survive in their rapidly changing world. The population was eventually fr Mid Basin Centennial Park Ai&246 Project Final EIR 5-65 Section 5 decimated by the introduction of European diseases, such as measles and small pox, for which they had no immunity. After 1810, mission populations declined faster than they could be replenished. The Mexican Revolution, beginning in 1821, overthrew Spanish control and the new government of Mexico had a very different Outlook on mission activities. Mexico's independence from Spain in 1822 brought the Mexican Period to California. Mexico secularized the missions in 1833 and expanded on the Spanish practice of granting large tracts of ranch land to soldiers, civil servants, and pioneers. Secularization of the missions, planned under the Spanish, was greatly accelerated by the Mexican government. Plans to provide land, training, and living quarters for the Native American population never developed and the mission lands were soon under the control of a relatively few influential Mexican families. The rancho life style was relatively short lived, but remained an influential period in California history, During the 1840s, an increasing influx of Anglo- Americans from the eastern United States spurred an American challenge for the California territory. The American Period began with Mexico's defeat at the end of the Mexican- American War, resulting in the concession of California to the United States under the Treaty of Guadalupe Hidalgo on February 2, 1848. Only a few days before, the discovery of gold on the American River had stimulated the Gold Rush of 1848-1849. After more than two years of legislative process and debate, California became the 31 st state of the Union on September 9, 1850. The Spanish land grant that lay entirely in what is now Orange County, the Rancho Santiago de Santa Ana, became the location of the city of Santa Ana. The Rancho Santiago de Santa Ana was comprised of 62,51:6 acres and stretched northerly for 25 miles, from the ocean to the mountains. Its western boundary followed the southeast bank of the Santa Ana Diver.. Current Conditions Prior to 1953, the land now known as Centennial Park was largely undeveloped. Then in the late 1950's, the United States Government established a Federal Aviation Administration Communications Center that occupied much of the land until 1967. After 1967, the property was designated as surplus property and was placed under the control of the National Park Service. Shortly after, the first of three separate land transactions occurred to transfer the surplus land to private ownership, culminating with the third and final transaction in June of 1977. According to a deed restriction involving the sales, the National Park Service must approve proposed undertakings involving the deeded land. One of the landowners, the City of Santa Ana, leased a sizeable portion of the property for strawberries in what would become known as the Centennial Nursery. The ry Mid Basin Centennial Park �8q&Affroject Final EIR 5-66 Section 5 Godinez High School, then known as the Mt. View High School, was constructed in 1968 south of where Centennial Park would be built in 1978. Two years later, in 1980, the Heritage Museum was constructed adjacent to Harvard Avenue, 5.4.2 Regulatory Framework National Register of Historic Places Cultural resources are considered during federal undertakings chiefly under Section 106 of the National Historic Preservation Act (NIHPA) of 1966 (as amended) through one of its implementing regulations (36 CFR 800). Properties of traditional religious and cultural importance to Native Americans are considered under Section 101(d) (6) (A) of the NHPA. Section 106 of the NHPA (16 USC 470f) requires federal agencies to take into account the effects of their undertakings on any district, site, building, structure, or object that is included in or eligible for inclusion in the NRHP and to afford the Advisory Council on Historic Preservation (ACHP) a reasonable opportunity to comment on such undertakings (36 CFR 800.1), Under Section 106, the significance of any adversely affected cultural resource is assessed and mitigation measures are proposed to reduce the impacts to a less than significant level. Significant cultural resources are those that are listed in or are eligible for listing in the NRHP in accordance with the criteria stated at 36 CFR 60.4, which are listed below, • 'The quality of significance in American history, architecture, archaeology, engineering and culture is present in districts, sites, buildings, structures and objects that possess integrity of location, design, setting, materials, workmanship feeling and association and that: • They are associated with events that have made a significance contribution to the broad patterns our history, or • They are associated with the lives of persons significant in our past, or • They embody the distinctive characteristics of a type, period, or method of installation, or that they represent the work of a master, or that possess high artistic values or that represent a significant and distinguishable entity whose components may lack individual distinction, or • They have yielded or may be likely to yield, information important in prehistory or history. California Register of Historical Resources CEQA requires a lead agency to determine whether a project would have a significant effect on one or more historical' resources, A "historical resource" is defined as a resource listed in or determined to be eligible for listing in the California Register of Historical Resources (CRHR) (California Public Resources Code [PRC], Section 21084.1); a resource included in a local register of historical Mid Basin Centennial Park l�gd-llfdb Project Final EIR 5-67 Section 5 resources (14 California Code of Regulations [CCR], Section 15064,5[a][2j); or any object, building, structure, site, area, place, record, or manuscript that a lead agency determines to be historically significant (14 CCR 15064.5[a][3]). Section 5024.1 of PRC, Section 15064,5 of the State CEQA Guidelines (14 CCR), and Sections 21083.2 and 21084.1 of the CEQA Statutes were used as the basic guidelines for the cultural resources study. PRC 5024.1 requires evaluation of historical resources to determine their eligibility for listing on the CRHR. The purposes of the CRHR are to maintain listings of the State's historical resources and to indicate which properties are to be protected from substantial adverse change. The criteria for listing resources in the CRHR were expressly developed to be in accordance with criteria developed for listing in the National Register of Historic Places (NRHP) (per the criteria listed in the Code of Federal Regulations [CFR], Title 36, Section 60.4) and include those listed below. • The quality of significance in American History, architecture, archaeology, engineering and culture is present in districts, sites, buildings, structures and objects that possesses integrity of location, design setting, material, workmanship feeling and association and that: • They are associated with events that have rnade a significant contribution to the broad patterns of our history or, • They are associated with the lives of persons significant in our past, or • They embody the distinctive characteristics of a type, period, or method of installation, or that represent the work of a master, or that possesses high artistic values, or that represent a significant and distinguishable entity whose components may lack individual distinction or, • Have yielded, or may be likely to yield, information important in prehistory. Human Remains Section 7050.5 of the California Health and Safety Code provides for the disposition of accidentally discovered human remains. Section 7050.5 states that, if human remains are found, no further excavation or disturbance of the site or any nearby area reasonably suspected to overlie adjacent remains shall occur until the County Coroner has determined the appropriate treatment and disposition of the human remains. Section 5097,98 of the PRC states that, if remains are determined by the Coroner to be of Native American origin, the Coroner must notify the Native American Heritage Commission within 24 hours which, in turn, must identify the person or persons it believes to be the most likely descended from the deceased Native American, The descendants shall complete their inspection within 48 hours of being granted access to the site, Mid Basin Centennial Park Ad�fO Project Final EIR 5-68 Section 5 The designated Native American representative would then determine, in consultation with the property owner, the disposition of the human remains, Local Regulations The following goals, objectives and policies from the City of Santa Ana General Plan are applicable to the project; • Preserve, maintain, and property use natural and cultural resources • Integrate natural and cultural resource as protection measures into land use and development activities. • Minimize loss of natural, aesthetic, historic, archaeological and paleontological resources and land is developed. • Inventory existing historic, archaeological, paleontological and cultural sites and districts. 5.4.3 Threshold of Significance 1, Would the project cause a substantial adverse change in the significance of a historical resource as defined in Section 15064.5 of the CEQA Guidelines? 2, Would the project cause a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064,5 of the CEQA Guidelines? 3. Would the project disturb any human remains, including those interred outside of formal cemeteries? 4. Would the project directly or indirectly disturb or destroy a unique paleontological resource or site? 5.4.4 Environmental! Consequences IMPACT Ci Would the project cause a substantial adverse change in the significance of a historical resource as defined in Section 15064.5 of the CECIA Guidelines? IMPACT CR-2: Would the project cause a substantial adverse change in the significance of an archaeological resource as defined in Section 15064.5 of the CEQA Guidelines? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. The project area would continue to have low potential to encounter lands that contain known historical resources or known archaeological resources, There would be no n 0b Project Final EIR 5-69 2 Mid Basin Centennial Park W Ql;i _ Section 5 construction activity and no potential to encounter Unknown historical or unknown archaeological resources. Alternative 2: Proposed Project As shown in Figure 16, the Area of Potential Effect (APE) is Centennial Park Site located at 3000 West Edinger Avenue and the Heritage Museum site located at 3101 West Harvard Street. Previous Archeological Cultural Resource Record Searches A record search was contacted at the South Central Coastal Information Center in April of 2015. As shown in Table 20, the record search identified three Studies that were prepared adjacent to the Centennial Park and the Heritage MUSeUrn sites. The studies consisted of pedestrian field Surveys and cultural resource evaluations, or were research oriented and did not involve field work. Each Study was reviewed to determine if they contained any cultural resource information relevant to the Centennial Park and to the Heritage Museum. The records search indicates that no cultural resources were recorded within one-mile radius of the project site. Table 20: Cultural Resources Investigations Adjacent to Project Area Report No. Author/Yoar Study Description OR-00901 Langenwater and Brock 1985 Phase 11 Prado, Basin and Lower Santa Ana River OR-01838 Padorr 1998 Cultural Resources Review for Groundwater Replenishrient OR-04259 Becker et aV. 2007 Monitoring Report I 9L2LJndwater Re lenishrnent The Heritage Museum contains a historic plaza featuring several buildings from the 1890-s, extensive flora gardens, citrus groves, agriculture demonstration garden area and Native vegetation open space. Two historical homes are located within the boundary of the Heritage Museum: the Maag Ranch House and the Kellogg House. Mid Basin Centennial Park Aid Project Final EIR 5-70 Section 5 Figure 16: Area of Potential Effects Mid Basin Centennial Park �gq&nft-LProject Final EiR 5-71 Section 5 The Maag Ranch House is located at 3101 West Harvard Street. The house was moved from its original location on Fairhaven Avenue to the museum properly in 1980, The house was constructed in 1899 and is listed on the HPDF and was determined ineligible for the NRHP. That Maag Ranch House has been evaluated and been listed as a Landmark on the City of Santa Ana Local Register and determined to be eligible for listing on the State of California Register of Historical Resources. The evaluation prepared for the Maag Ranch House is contained in Appendix D-1. The Kellogg House was also moved to the museum property in 1980 from its original location on Orange Avenue. The Kellogg House has been evaluated and been listed as a Landmark on the City of Santa Ana Local Register and determined to be eligible for listing on the State of California Register of Historical Resources, The evaluation prepared for the Kellogg House is contained in Appendix D-1. A short segment of the water supply pipeline would be attached to the nose piers at the Edinger Bridge that crosses the Santa Ana River Channel immediately northwest of Centennial Park, This bridge is listed in the Caltrans California Bridge Inventory (No. 55 0266). The bridge has been assigned an NRHP Status Code 5, The Bridge underwent major construction in 2013 and 2014, and it does not warrant further consideration during this project and would not be eligible for the NRHP. Archeological Survey Results The archaeological survey of the property was conducted on May 7, 2015, by Mr, David Smith, the BonTerra/Psomas Senior archaeologist based out of the Orange County office. The proposed alignment of the pipelines, the injection and monitoring well locations, the shared structure locations were inspected. Almost all of the alignment of the pipelines is underground. Additionally, the locations of the shared structures were paved over. The monitoring well location is located in an existing dirt parking area that has been disturbed as part of the construction of Godinez High School. No archaeological materials were observed during the pedestrian survey and given the disturbances that have occurred to both areas the potential for discovery of archeological resources at Centennial Park or at the Heritage Museum, would be low. Even though there is low potential for discover of archeological resources, there would be some potential that unknown cultural resources could be encountered during earthwork activity. With the implementation of Mitigation Measure CR-1 potential adverse impacts to unknown cultural resources would be reduced to a less than significant leveL Mid Basin Centennial Park Project Final EIR 5-72 Section 5 Two historical structures are present at the Heritage Museum, Both structures are well outside of any potential impacts from the Proposed Project and would not suffer from and direct or indirect construction related impacts. Alternative 3: Reduced Intensity Alternative Under Alternative 3, the project would be implemented within the same Area of Potential Effect. Similar to the Proposed Project, no adverse impacts would occur to lands that are known to contain recorded historical sites or recorded archeological sites. Under Alternative 3, there would be a reduced amount of earthwork activity. Therefore, there would be less potential to encounter lands that could potentially contain unknown historical and archeological resources during earthwork activities. With the implementation of Mitigation Measure CRS -1 potential adverse impacts to unknown cultural resources would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, the project would be implemented within the same Area of Potential Effect. Similar to the Proposed Project, no adverse impacts would occur to lands that contain recorded historical sits or recorded archeological sites. Under Alternative 4, the amount of earthwork activity and level of potential impacts, to unknown cultural resources would be similar to the proposed project. With the implementation of Mitigation Measure CR-1 potential adverse impacts to unknown cultural resources would be reduced to a less than significant level. Mitigation Measure CR-1: A qualified Archaeologist will be retained during construction to observe grading activities in the uppermost layers of sediment and to salvage and catalogue archaeological resources, as necessary. The designated Archaeologist should be present during the pre-grade meeting to discuss cultural resources sensitivity and to assess whether archaeological resources have the potential to be encountered. The Archaeologist must first determine whether an archaeological resource uncovered during construction is a "unique archaeological resource" pursuant to Section 21083.2(g) of the California Public Resources Code or a "historical resource" pursuant to Section 15064.5(a) of the State CEQA Guidelines, If the archaeological resource is determined to be a "unique archaeological resource" or a "historical resource", the Archaeologist shall formulate a mitigation plan in consultation with the OCWD that satisfies the requirements of the above listed sections, rub Mid Basin Centennial Park � j6d, � f � 114 Project Final EIR 5-73 Section 5 Level of Impact Alternative 1: No adverse impact Alternative 2! Less than significant adverse impact with Mitigation Measure CR-1. Alternative 31 Less than significant adverse impact with Mitigation Measure CR-1. Alternative 4: Less than significant adverse impact with Mitigation Measure CR-1. IMPACT CR-3: Would the project disturb any human remains, including those interred outside of formal cemeteries? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. The project area would continue to have low potential to encounter lands that contain recorded Native American sacred burial remains. There would be no construction activity and no potential to encounter unknown Native American sacred burial remains. Alternative 2: Proposed Project A Native American record search was conducted by Native American Heritage Commission (NAHC) to determine if there were any known Native American sacred burial grounds on or near the project area. The NAHC review of the Sacred Lands Files did not show the presence of cultural resources on or near the project area, The NAHC acknowledged that their records might not contain all information relevant to Native American sites in the project area and advised BonTerra/ Psomas to contact various local tribes. The NAHC provided a list of tribes affiliated with the project site. Each tribe on the list was notified in writing an June 8, 2015, of the Proposed Project and invited to provide any information they may have regarding cultural resources on or near the project site. No responses were provided indicating the potential presence of Native American scared burial grounds, Even though there its low potential for discovery of Native American sacred burial grounds, there would be some potential that unknown Native American sacred burial grounds could be encountered during earthwork activities. With the implementation of Mitigation Measure CR-2 potential adverse impacts to unknown Native American sacred burial remains would be reduced to a less than significant level. Alternative 3: Reduced Intensity Alternative Under Alternative 3, the project would be implemented within the same Area of Potential Effect. Similar to the proposed project, no adverse impacts would occur to lands that contain recorded Native American sacred burial grounds. Under Alternative 3, there would be a reduced amount of earthwork activity. Therefore, wo �1 Mid Basin Centennial Park Project Final EIR 5-74 k"L,66' 1114� 6 Section 5 there would be less potential to encounter lands that could potentially contain unknown Native American sacred burial grounds during earthwork activities. With the implementation of Mitigation Measure CR-2 potential adverse impacts to unknown Native American sacred burial remains Would be reduced to a less than significant level, Alternative 4: Pipeline Design Alternative Under Alternative 4, the project would be implemented within the sarne Area of Potential Effect, Similar to the Proposed Project, no adverse impacts would occur to lands that contain recorded Native American sacred burial grounds Under Alternative 4, the amount of earthwork activity and level of potential impacts to unknown Native American sacred burial grounds would be similar to the Proposed Project. With the implementation of Mitigation Measure CR-2 potential adverse impacts to unknown cultural resources would be reduced to a less than significant level. Mitigation Measure CR-2: If human remains are encountered during excavation activities, all work shall halt in the vicinity of the remains and the County Coroner shall be notified (California Public Resources Code §5097.98). The Coroner will determine whether the remains are of forensic interest. If the Coroner, with the aid of a qualified Archaeologist, determines that the remains are prehistoric, s/he will contact the Native American Heritage Commission (NAHC), The NAHC will be responsible for designating the most likely descendant (MLD), who will be responsible for the ultimate disposition of the remains, as required by Section 7050.5 of the California Health and Safety Code. The MLD shall make his/her recommendation within 48 hours of being granted access to the sites, If feasible, the recommendation of the MLD shall be followed and may include scientific removal and non-destructive analysis of the human remains and any items associated with Native American burials (California Health and Safety Code §7050.5). If the landowner rejects the recommendations of the MLD, the landowner shall rebury the remains with appropriate dignity on the property in a location that will not be subject to further subsurface disturbance (California Public Resources Code §5097.98). Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with Mitigation Measure CR-2. Alternative 3: Less than significant adverse impact with Mitigation Measure CR-2. Alternative 4: Less than significant adverse impact with Mitigation Measure CR-2. k 1 1 2 Mid Basin Centennial Park Project Final EIR 5-75 � 806 Section 5 IMPACT CR-4: Would the project directly or indirectly disturb or destroy a unique paleontological resource or site? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be im plernented. The project area would continue to have low potential to encounter paleontological resources within surface deposits of younger Quaternary alluvium and some potential to encounter paleontological resources within the older Quaternary deposits. Alternative 2: Proposed Project The Natural History Museum of Los Angeles County (NHMLAC) was contacted and requested to review their topographical maps for the project area to determine the geology underlying the project site, the sensitivity of the site for the presence of fossils, and if any fossil-bearing localities had been recorded. According to NHLMAC, the entire project area has surface deposits of younger Quaternary alluvium, derived as fluvial deposits from the Santa Ana River that flows through the western portion of the proposed project area. There are no fossil vertebrate localities anywhere nearby from these deposits and they are unlikely to contain significant vertebrate fossils, at least in the uppermost layers, Older Quaternary deposits could occur in the proposed project area at unknown depth and could contain significant fossil vertebrate remains. The closest vertebrate fossil locality from these older Quaternary deposits is LACM 1339, just west of south of the proposed project area east of the Santa Ana River near the top of the mesa bluffs along Adams Avenue, that produced fossil specimens of mammoth (Mammuthus) and camel Cameliclae) bones from sands approximately 15 feet below the top of the mesa that is overlain by shell-bearing silts and sands. Surface grading or shallow excavations in the project area probably would not uncover significant vertebrate fossil remains. Excavations that extend down, into the older Quaternary deposits, however, could well encounter significant fossil vertebrate specimens. Any substantial excavations below the uppermost layers in the proposed project area should be monitored closely to quickly and professionally recover any fossil remains discovered while not impeding development. Sediment samples should also be collected and processed to determine the small fossil potential in these deposits. Any fossils recovered during mitigation should be deposited in an accredited and permanent scientific institution for the benefit of current and future generations. With the implementation of Mitigation Measure CR-3 potential impacts to unknown paleontological resources would be reduced to a less than significant level. Mid Basin Centennial Park Project Final EIR 5-76 Section 5 Alternative 3: Reduced Intensity Alternative Under Alternative 3, the project would be implemented within the same Area of Potential Effect. Similar to the proposed project, no adverse impacts would occur to lands that contain recorded paleontological resources. Under Alternative 3, there would be a reduced' amount of earthwork activity. Therefore, there would be less potential to encounter lands that contain unknown paleontological resources. With the implementation of Mitigation Measure CR-3 potential adverse impacts to unknown cultural resources would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, the project would be implemented within the same Area of Potential Effect. Similar to the Proposed Project, no adverse impacts would occur to lands that contain recorded paleontological resources. Under Alternative 4, the amount of earthwork activity and level of potential impacts to unknown paleontological resources would be similar to the proposed project. With the implementation of Mitigation Measure CR-3 potential adverse impacts to unknown paleontological resources would be reduced to a less than significant level. Mitigation Measure CR-3: A qualified Paleontologist be notified and retained when earth-moving activities are anticipated to impact undisturbed deposits in the Older Quaternary Alluvium on the project sites. The designated Paleontologist should be present during the pre-grade meeting to discuss paleontological sensitivity and to assess whether scientifically important fossils have the potential to be encountered. The extent of monitoring activities will be determined at the meeting in consultation with the OCWD, If any scientifically important large fossil remains are uncovered during earth-moving activities, the Paleontological Monitor will divert heavy equipment away from the fossil site until s/he has had an opportunity to examine the remains. Samples of Older Quaternary Alluvium should be collected for processing and examination for very small vertebrate fossils. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with Mitigation Measure CR-3. Alternative 3: Less than significant adverse impact with Mitigation Measure CR-3. Alternative 4: Less than significant adverse impact with Mitigation Measure CR-3. Mid Basin Centennial Park �l . bcd, 111M Project Final EIR 5-77 Section 5 5.5 ENVIRONMENTAL JUSTICE 5.5.1 Affected Environment For purposes of evaluating socioeconomic conditions within the project area, demographic information from surrounding cities of Garden Grove, Anaheim, Westminster, Orange, Irvine, Costa Mesa and Orange County as a whole were evaluated. The demographic information is based on 2015 Orange County Progress Report. Population The population summary for surrounding sites and the County of Orange are shown in Table 21. Table 21: Population Summary Ethnicity The ethnicity surnmary for surrounding cities and the County of Orange are shown in Table 22. Table 22: Ethnicity Summary Santa Garden Anaheim Westminster, Orange White Ana Grove 27,5 25.4 County _Lot Population �IL _ � _ 324,52£3 _�_� 170,883 336,265 89,701 3,010,232 Hispanic Asian/Pacific Islander 78.2 1C4 I 36.9 36.9 I 52.8 146 23,6 47,3 I 33.6 17.7 Average family 4.45 3,72 339 3-32 102 Size Ethnicity The ethnicity surnmary for surrounding cities and the County of Orange are shown in Table 22. Table 22: Ethnicity Summary Housing The housing summary for surrounding cities and the County of Orange are shown in Table 23, Mid Basin Centennial Park2ACmMProject Final EIR 5-78 Santa Ana Garden Grove Anaheim Westminster: Orange CountL_ White 9.2 22.6 27,5 25.4 44.1 African American 1.0 1.0 2.4 1.0 1.5 Hispanic Asian/Pacific Islander 78.2 1C4 I 36.9 36.9 I 52.8 146 23,6 47,3 I 33.6 17.7 Other Race 1 1.2 1 2.6 2.7 2.7 3.1 Housing The housing summary for surrounding cities and the County of Orange are shown in Table 23, Mid Basin Centennial Park2ACmMProject Final EIR 5-78 Section 5 'Table 23: Housing Summary 5.5.2 Regulatory Framework The following goals from the City of Santa Ana General Plan are relevant to the project. 0 Ensure that the impacts of development are mitigated. • Protect and enhance development sites and districts which are unique community assets that enhance the quality of life. 9 Protect the community from incompatible land uses, 5.5.3 Threshold of Significance 1. Would the project cause a significant shift in population, housing and employment? 2. Would the project cause disproportionately high and adverse impacts on minorities and low income households? 5.5.4 Environmental Consequences IMPACT EJ-1: Would the project cause a significant shift in population, housing and employment? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would be no change to existing levels Of population, housing and employment levels within the project area. Alternative 2: Proposed Project The implementation of the Proposed Project would not generate any long term employment opportunities that would cause change to existing population and housing levels within the project area, The Proposed Project would increase the amount of injection wells that OCWD operates and maintains and could require OCWD to hire additional workers. However, any increase would be minimal and would not substantially change existing housing and population levels within the t4'J Mid Basin Centennial Park 2jMr180Pmject Final EIR 5-79 Santa Ana Garden Anaheim Westminster Orange Grove coonty Total Housi9q_tJniL8_ 76,089 47,703 104,724 28,392 1,052,959i Avg. House Size 4.45 3.72 3,39 3.32 302 -M Percent 21.5 16Z 16.1 16.7 12 Households Below Poverty Line 5.5.2 Regulatory Framework The following goals from the City of Santa Ana General Plan are relevant to the project. 0 Ensure that the impacts of development are mitigated. • Protect and enhance development sites and districts which are unique community assets that enhance the quality of life. 9 Protect the community from incompatible land uses, 5.5.3 Threshold of Significance 1. Would the project cause a significant shift in population, housing and employment? 2. Would the project cause disproportionately high and adverse impacts on minorities and low income households? 5.5.4 Environmental Consequences IMPACT EJ-1: Would the project cause a significant shift in population, housing and employment? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would be no change to existing levels Of population, housing and employment levels within the project area. Alternative 2: Proposed Project The implementation of the Proposed Project would not generate any long term employment opportunities that would cause change to existing population and housing levels within the project area, The Proposed Project would increase the amount of injection wells that OCWD operates and maintains and could require OCWD to hire additional workers. However, any increase would be minimal and would not substantially change existing housing and population levels within the t4'J Mid Basin Centennial Park 2jMr180Pmject Final EIR 5-79 Section 5 project area. Additionally, the Proposed Project would not involve the construction of new infrastructure or expansion of existing infrastructure to facilitate new housing and population growth within the project area. The increased amount of ground water recharge capacity from the Proposed Project would help to meet existing and planned water demands within in the project area, The construction of the Proposed Project would generate short-term employment opportunities within the project area. The employment opportunities would most likely be filled from County-wide employment pool and would not generate a need for additional housing or increase population levels within the project area. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed. Similar to the Proposed Project, OCWD could hire additional workers to operate and maintain the injections wells. Because one less injection well would be operated and maintained a reduced amount of new workers could potentially be needed. The additional workers would be minimal and would not substantially change existing housing and population levels within the project area, The Proposed Project would generate short employment opportunities. Because one less injection well would be constructed there could potentially be fewer employment opportunities. Similar to the Proposed Project, the short-term employment opportunities would not substantially change existing housing and population levels within the project area. Alternative 4: Pipeline Design Alternative Under Alternative 4, the long-term employment opportunities and short-term employment opportunities would be similar to the Proposed Project, No substantial change to existing levels of employment, housing and population would occur within the project area. Mitigation Measures No mitigation measures required. Level of Impact Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact IMPACT EJ-2: Would the project cause disproportionately high and adverse impacts on minorities and low income households? C, J Mid Basin Centennial Park2fiGrUlProject Final FIR 5-80 �'Zo Section 5 Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented within the City of Santa Ana. Within the project area there would be no impacts and no changes to the existing mix of minority households and households below the poverty line. Alternative 2: Proposed Project Compared to the County-wide percentage, the City of Santa Ana has a higher percentage of minorities and households below the poverty line. Over 65 percent of the household water needs within the City of Santa Ana are provided from groundwater from the Orange County Groundwater Basin- The remaining percentage of household water needs is provided from imported water supplies that are purchased from the northern California or from the Colorado River. The cost to produce groundwater is substantially lower compared to the cost to purchase imported water. The Proposed Project would increase ground supplies within the Orange County Groundwater Basin. The reduced cost for groundwater would have a greater economic benefit to lower income households, The implementation of the Proposed Project would result in short-term construction impacts within the City of Santa Ana but would also have a long terra beneficial impact on the cost of groundwater for lower income households. Alternative 3. Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed and operated. Potential construction related impacts would be similar to the Proposed Project. Under Alternative 3, a reduced amount of groundwater recharge Capacity Would be provided. Compared to the Proposed Project, there would be less beneficial impacts to lower income households. Alternative 4: Pipeline Design Alternative Under Alternative 4, the same amount of groundwater recharge capacity would be provided. Potential construction related impacts and beneficial impacts to low incorne households would be similar to the Proposed Project, Mitigation Measures No mitigation measures required. Level of Impact Alternative 1: No adverse impact Alternative 2: Beneficial impact Alternative 3: Beneficial impact Alternative 4: Beneficial impact Mid Basin Centennial PaAAQ442Project Final EIR 5-81 Section 5 5.6 GEOLOGY/SOILS The following analysis is based on a geotechnical report prepared for the Mid Basin Centennial Park Injection Well Project by Leighton Associates in September in 2015. The geotechnical report is presented in its entirety in Appendix E. 5.6.1 Affected Environment Geologic Setting The project site is located within the floodpWn of the Santa Ana River. The site is underlain by over 1,000 feet of alluvium deposited by the ancestral Santa Ana River. The alluvial deposits underlying the site are estimated to be Late Pleistocene to Holocene in age and typically consist of sand, silt and clay in the upper 25 feet below grade. Subsurface Conditions Boring samplIes were conducted on the project site work areas to identify subsurface conditions. The pavement sections of the project site consisted of 3 inches to 7 inches of asphalt concrete overlaying 3 to 12 inches of aggregate base. Subsurface soils that underlie the pavement sections generally consisted of light olive brown to brown, medium dense sand with varying amount of silt to a depth of approximately 10 feet, The sand is dry to slightly moist and considered susceptible to caving due to the relatively low moisture content and lack of cementation. Below the sand to the maximum depth explored, the soils consisted primary of layers of loose to medium dense silt and medium stiff clay. Groundwater Groundwater was encountered at depths between 13 feet and 23 feet. The historic high groundwater table within the site was reported to be at 5 feet below the ground surface. Sail Corrosivity The subsurface soils at the project site showed negligible potential for sulfate attack on concrete and are considered to have low corrosion potential to buried ferrous metal in direct contact with the soils. Faulting and Seismicity There are no known active faults traversing the site and the site is not located within a State of California designated Aliquist-Priolo Earthquake, fault Zone- The project area is located within a seismic active region and would be susceptible to ground shaking from known active and potentially active faults in the region, including the San Joaquin Hills Blind Thrust, Newport Inglewood, Puente Hills Blind Thrust and the Elsinore Faults. Mid Basin Centennial Park 9J§7 c9n1A;Project Final EIR 5-82 Section 5 Liquefaction Hazards According to the California Department of Geologic Survey Seismic Hazard Zone Map the project area is located within an area that would susceptible to the occurrence of liquefaction. 5.6.2 Regulatory Framework State Regulations Alquist-Priolo Earthquake Fault Zoning Act In response to the severe structural damages caused by the 1971 San Fernando Earthquake, the State of California enacted the Alquist-Priolo Earthquake Fault Zoning Act. This act regulates development near active faults in order to mitigate the hazards of surface fault-rupture. Under the act, the State Geologist is required to delineate: special study zones along known active faults- The act also requires that prior to approval of a project, a geologic study is required to be prepared to define and delineate any hazards from surface rupture. A 50-foot setback from any known trace of an active fault is required. Seismic Hazards Mapping Act The Seisimic Hazards Mapping Act, enacted in 1977, was developed to protect the public from the effects of strong ground shaking, liquefaction, landslides or other ground failure and from hazards caused by earthquakes. The act requires the State Geologist to delineate various seismic hazard zones and requires cities, counties and other local permitting agencies to regulate certain development projects within these zones. California Building Standard Code Title 24 of the California Code of Regulations, also known as the California Building Standards Code, sets forth minimum requirements for building design and construction. The California Building Standards Code is a compilation of three types of building standards from three different origins. • Building standards that have been adopted by state agencies without change from building standards contained in national model codes, • Building standards that have been adopted and adapted from the national model code standards to meet California conditions. • Building standards authorized by the California legislature that constitute extensive additions not covered by the model codes that have been adopted to address particular California concerns. In the context of earthquake hazards, the California Building Standards Code design standards have a primary objective of assuring Public safety and a Mid Basin Centennial Park 9)�9_nWProject Final EiR 5 -83 Section 5 secondary goal of minimizing property damage and maintaining function during and following a seismic event. 5.6.2 Thresholds of Significance 1, Would the project expose people or structures to potential substantial adverse effects, including the risk of loss, injury or death involving strong seismic ground shaking? 2. Would the project expose people or structures to potential substantial adverse effects, including the risk of foss, injury or death involving liquefaction? 3. Would the project result in substantial soil erosion or the loss of topsoil? 4. Would the project be located on collapsible or expansive soil creating substantial risks to life or property? 5.6.3 Environmental Consequences IMPACT GEC! -1: Would the project expose people or structures to potential substantial adverse effects, including the risk of loss, injury or death involving strong seismic ground shaking? Alternative 1: No Federal! Action /No Project Under Alternative 1, the project would not be implemented. The project area would continue to be within a seismically active area and would be subject to potential seismic shaking impacts. Alternative 2: Proposed Project The project area is located in a seismically active region and could be subject to seismic shaking impacts from active faults in the region. The highest risks to the project area would be from Newport Inglewood Fault, Puente Hulls Blind Thrust and the Whittier Fault all which have the potential to cause moderate to large earthquakes. In the event of a moderate or large earthquake, the project area could experience seismic shaking impacts possibly of considerable intensity. The seismic risks at the project area would be similar to other areas in southern California. The components of the project would be designed to meet seismic design parameters of the California Building Code to withstand potential seismic shaking impacts caused by an earthquake within an acceptable level of risk. The implementation of the Proposed Project would not substantially increase the risk or exposure of people to significant adverse seismic shaking impacts over the current condition. Compliance with the California Building Code would reduce potential seismic shaking impacts to a less than significant level. M Mid Basin Centennial Park 9�c'tfonYProject Final El 5-84 Section 5 Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed. Therefore, there would be fewer components of the project that could be susceptible to seismic shaking impacts. The components of the project would be designed to meet seismic design parameters of the California Building Code, Compliance with the California Building Code Would reduce potential seismic shaking impacts to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4 potential seismic shaking impacts and risks would be similar to the Proposed Project. The components of the project Would be designed to meet seismic design parameters of the California Building Code. Compliance with the California Building Code would reduce potential seismic shaking impacts to a less than significant level. Mitigation Measures No mitigation measures required. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT GEO-2: Would the project expose people or structures to potential substantial adverse effects, including the risk of loss, injury or death Involving liquefaction? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. The project area would continue to be within a liquefaction hazard area and could be subject to potential liquefaction impacts. Alternative 2: Proposed Project According to the California Geologic Survey Seismic Hazard Zone Map for the Newport Quadrangle, the project area is located within an area where historic occurrence of liquefaction has occurred. The primary reason would be from relatively shallow historically high groundwater level and loose to medium dense sand and silt within the project area. Components of the Proposed Project would be designed to meet seismic design parameters of the California Building Code to withstand potential liquefaction impacts caused by an earthquake within an Mid Basin Centennial Park Aj?cYo;tWroject Final FIR 5-85 Section 5 acceptable level of risk. Compliance with the California Building Code would reduce potential liquefaction impacts to a less than significant level. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed. There would be fewer components of the project that could be susceptible to liquefaction impacts. The components of the project Would be designed to meet comply with the California Building Code. Compliance with the California Building Code would reduce potential liquefaction impacts to a less than significant level. Alternative 4.- Pipeline Design Alternative Under Alternative 4, potential seismic shaking impacts and risks would be similar to the Proposed Project. The components of the project would be designed to meet comply with the California Building Code. Compliance with the California Building Code would reduce potential liquefaction impacts to a less than significant level. Mitigation Measures No mitigation measures are required. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT GEO-,3: Would the project result in substantial soil erosion or the loss of topsoil? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would be no earthwork activities that would expose soils and increase the potential for erosion impacts. Alternative 2: Proposed Project The implementation of the Proposed Project would involve the grading and excavation of approximately 1.25 acres of area. The exposed soils on the project site could be subject to erosion impacts caused by water and wind. Additionally, construction equipment and vehicles could transport sediment to offsite locations. Construction projects which disturb one or more acres of soil are required to obtain coverage under a General Construction Permit by the State Water Resources Control Board. The General Construction Permit requires the filing of Mid Basin Centennial Park 9j§c91A7,Project Final E I R 5-86 Section 5 a Notice of Intent with State Water Resources Control Board and the preparation of a Storm Water Pollution Prevention Plan (SWPPP), The SWPPP would provide and implement a list of Best Management Practices to minimize potential soil erosion impacts. With implementation of Mitigation Measure GEO-1 potential erosion impacts would be reduced to a less than significant level. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well and a reduced amount of pipeline would be constructed, approximately 1, 15 acres of soil disturbances would occur, Under Alternative 3 there would be a reduced amount of soil disturbances. Therefore, the potential for erosion impacts would be less, The project would still involve over one acre of grading and would be required to obtain coverage under a General Construction Permit by the State Water Resources Control Board. With implementation of Mitigation Measure GEO-1 potential erosion, impacts would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, the amount of soil disturbances would be similar to the Proposed Project. With implementation of Mitigation Measure GEC? -1 potential erosion impacts would be reduced to a less than significant level, Mitigation Measure ,GEO-1: Prior to the start of construction OCWD will obtain coverage under the General Construction Permit by the State Water Resources Control Board and in compliance with the permit will file a Notice of Intent with the State Water Resources Control Board and prepare and implement Storm Water Pollution Prevention Plan, Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant impact with Mitigation Measure GEO-1. Alternative 3: Less than significant impact with Mitigation Measure GEO-1, Alternative 4: Less than significant impact with Mitigation Measure GEO-1 . IMPACT GE04: Would the project be located on collapsible or expansive soil creating substantial risks to life or property? Alternative 1: No Federal Action/No Project Under Alternative 1, no injection wells, pipelines or shared structures would be built. Therefore, there would not be any concerns regarding the geotechnical stability of onsite soils at Centennial Park or at Heritage Museum, to support the proposed improvements. Mid Basin Centennial Park ?j§cq6M?Project Final EIR 5-87 Section 5 Alternative 2: Proposed Project Based on the geotechnical evaluation prepared for the project site the Proposed Project would be feasible from a geotechnical standpoint. To ensure geotechnical stability the geotechnical recommendations from the Leighton Consulting Geotechnical Report would be incorporated into the design and construction of the project. The design recommendations include, Site Grading, Foundation and Design Parameters, Slab-On-Grade, Lateral Earth Pressures, Seismic Design Parameters, Pipeline Trench Subgrade and Backfill, Open Trench Construction and Dewatering. With the implementation of GEO-2 potential onsite soil constraints would be reduced to a less than significant level. Alternative 3: Reduced Intensity Alternative Because of similar geotechnical characteristics at Centennial Park and the Heritage Museum, the geotechnical recommendations from Leighton Consulting Geotechnical Report would be applicable for Alternative 3. With the implementation of GEO-2 potential onsite soil constraints would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative The geotechnical recommendations from Leighton Consulting Geotechnical Report Would be applicable for Alternative 4. With the implementation of GEO-2 potential onsite soil constraints would be reduced to a less than significant level. Mitigation Measures GEO-2: The final design and construction of the project will iincorporate the geotechnical recommendations provided in the Leighton Consulting Geotechnical Report prepared for the Mid Basin Centennial Park Injection Well Project, Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant impact with Mitigation Measures GEO-2, Alternative: 3: Less than significant impact with Mitigation Measures GEO-2 Alternative 4. Less than significant impact with Mitigation Measures GEO-2, Mid Basin Centennial Park 9�944PIProject Final EIR 5-88 Section 5 5.7 GREENHOUSE GAS EMISSIONS The following analysis is a summary of Greenhouse Gas Emission Report prepared for the Mid Basin Centennial Park injection Well Project by BonTerra/Psornas in July of 2015. The Greenhouse Gas Emission Report is presented in its entirety in Appendix B. 5.7.1 Affected Environment Greenhouse Gases (GHG) are global Pollutants and are therefore unlike criteria air pollutants and toxic air contaminants, which are pollutants of regional and local concern. While pollutants with localized air quality effects have relatively short atmospheric lifetimes (generally on the order of a few days), GHGs have relatively long atmospheric lifetimes, ranging from one year to several thousand years. Long atmospheric lifetimes allow for GHGs to disperse around the globe, Therefore, GHG effects are global', as opposed to the local and/or regional air quality effects of criteria air pollutant and toxic air contaminants. GHGs, as defined under California's Assembly Bill (AB) 32, which includes; carbon dioxide (CO2), methane (CH4), nitrous oxide (N20), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs),, and sulfur hexafluoride (SF6). Both natural processes and human activities emit greenhouse gases, It is believed by some experts that the presence of greenhouse gases in the atmosphere affects the earth's temperature and that emissions frorn human activities such as electricity production and vehicle use have elevated the concentration of these gases in the atmosphere beyond the level of naturally occurring concentrations, The U.S. contributes approximately 14.7 percent of worldwide GHG emissions, per year; California contributes approximately 1 .0 percent. The most common GHG is G02, which constitutes approximately 84 to 85 percent of all GHG emissions in the U.S. and California- The primary contributors to California GHG emissions are (1 ) transportation; (2) electric power production from both in-state and out-of- state sources; and (3) industrial uses, 5.7.2 Regulatory Framework Federal Regulations The Consolidated Appropriations Act of 2008, passed in December 2007, requires the establishment of mandatory greenhouse gas reporting requirements. On September 22, 2009, the EPA issued the Final Mandatory Reporting of Greenhouse Gases Rule. The rule requires reporting of greenhouse gas emissions frorn large sources and suppliers in the United States, and is intended to collect accurate and timely emissions data to inform future policy decisions. Under the rule, Suppliers of fossil fuels or industrial greenhouse gases, manufacturers of vehicles, and engines, and facilities that emit 25,000 metric tons Mid Basin Centennial Park 6 2 I nf 11 Project Final EIR 5-89 9612 0 Section 5 or more per year of greenhouse gas emissions are required to submit annual reports to the EPA. Greenhouse Gas Endangerment On December 7, 2009, the EPA Administrator signed two distinct findings regarding greenhouse gases under § 202(a) of the Clean Air Act: 1 ) Current and projected concentrations of the six key well-mixed greenhouse gases—carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluloride in the atmosphere threaten the public health and welfare of current and future generations-, 2) The combined emissions of these well-mixed greenhouse gases from new motor vehicles and new motor vehicle engines contribute to the greenhouse gas pollution, which threatens public health and welfare. State Regulations Assembly Bill AB 32 The California State Legislature enacted AB 32, the California Global Warming Solutions Act of 2006. AB 32 requires that greenhouse gases emitted in California be reduced to 1990 levels by the year 2020. "Greenhouse gases" as defined under AB 32 include carbon dioxide, methane, nitrous oxide, hydrof[Llorocarbons, perfluorocarbons, and sulfur hexafluoride. ARB is the state agency charged with monitoring and regulating sources of greenhouse gases. The ARB's Climate Change Scoping Plan (Scoping Plan) contains measures designed to reduce the State's emissions to 1990 levels by the year 2020. The Scoping Plan identifies recommended measures for multiple greenhouse gas emission sectors and the associated emission reductions needed to achieve the year 2020 emissions target. Most of the measures target the transportation and electricity sectors. In addition, the Scoping Plan differentiates between "capped" and "uncapped" strategies. "Capped" strategies are Subject to the proposed cap- and-trade program. The Scoping Plan states that the inclusion of these emissions within the cap-and trade program would help ensure that the year 2020 emission targets are met despite some degree of uncertainty in the emission reduction estimates for any individual measure. Implementation of the capped strategies is calculated to achieve a suffiicient amount of reductions by 2020 to achieve the emission target contained in AB 32. "Uncapped" strategies that would not be subject to the cap-and-trade emissions caps and requirements are provided as a margin of safety by accounting for additional greenhouse gas emission reductions- Mid Basin Centennial Park A jK� Qrr Project Finial EIR 5-90 %A' - foli Section 5 The Scoping Plan was first approved by the Board in 2008 and must be updated every five years to evaluate the mix of AB 32 policies to ensure that California is on track to achieve the 2020 greenhouse gas reduction goal. The ARB has begun to update the Scoping Plan and plans to bring an updated Seeping Plan to the ARB Board for consideration. EIAUETIIEEK*rr �= Passed in August 2007, SB 97 added Section 21083.05 to the Public Resources Code. The code states "(a) On or before July 1, 2009, the Office of Planning and Research shall prepare, develop, and transmit to the Resources Agency guidelines for the mitigation of greenhouse gas emissions or the effects of greenhouse gas emissions as required by this division, including, but not limited to, effects associated with transportation or energy consumption. (b) On or before January 1, 2010, the Resources Agency shall certify and adopt guidelines prepared and developed by the Office of Planning and Research pursuant to subdivision (a)," On April 13, 2009, the Office of Planning and Research submitted to the Secretary for Natural Resources its recommended amendments to the CEQA Guidelines for addressing greenhouse gas emissions. On July 3, 2009, the Natural Resources Agency commenced the Administrative Procedure Act rulemiaking process for certifying and adopting these amendments pursuant to Public Resources Code section 21083.05. On February 16, 2010, the Office of Administrative Law approved the Amendments, and filed them with the Secretary of State for inclusion in the California Code of Regulations. The Amendments became effective on March 18, 2010. The CEQAAmendments provide guidance to public agencies regarding the analysis and mitigation of the effects of greenhouse gas emissions in CEQA documents. The CEQAAmendments fit within the existing CEQA framework by amending existing CEQA Guidelines to reference climate change. A new section, CEQA Guidelines Section 15064-4, was added to assist agencies in determining the significance of greenhouse gas emissions. The new section allows agencies the discretion to determine whether a quantitative or qualitative analysis is best for a particular project. However, little guidance is offered on the crucial next step in this assessment process on how to determine whether the project's estimated greenhouse gas emissions are significant or cumulatively considerable. Also amended were CEQA Guidelines Sections 15126.4 and 15130, which address mitigation measures and cumulative impacts respectively. Greenhouse gas mitigation measures are referenced in general terms, but no specific Mid Basin Centennial Park N jEql;Vn Project Final EIR 5-91 % *0 Section 5 measures are championed. The revision to the cumulative impact discussion requirement (Section 15130) simply directs agencies to analyze greenhouse gas emissions in an EIR when a project's incremental contribution of emissions may be cumulatively considerable, however it does not answer the question of when emissions are cumulatively considerable. 5.7.3 Thresholds of Significance 1. Would the project generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? 2. Would the project conflict with any applicable plan, policy or regulation of agency adopted for the purpose of reducing the emissions of greenhouse gasses? 5.7..4 Environmental Consequences IMPACT GHG -1: Would the project generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? Alternative 1: No Federal Action /No Project Under Alternative 1, the project would not be implemented. There would be no increases, in construction- related or operation greenhouse gas erissions within the project area. Alternative 2: Proposed Project There are no established Federal, State, or local quantitative thresholds applicable to the Proposed Project to determine the quantity of GHG emissions that could have a significant effect on the environment. CARIB, the SCAQMD, and various cities and agencies have proposed, or adopted on an interim basis, thresholds of significance or threshold levels that require the implementation of GHG emissions reduction measures. Because the Proposed Project is not a residential or commercial land use development project, the SCAQMD adopted . interim threshold of '10,000 MTCO2e for industrial projects to evaluate significant adverse GHG emission impacts generated from the Proposed Project. The Council on Environmental Quality guidance on the consideration of GHG emissions in NEPA reviews recommends that the NEPA analysis use a threshold of 25,000 MTCO2e per year of GHGs. Therefore, for NEPA analysis purposes, activities that generate GHG emissions less than 25,000 MTCO2e per year would be considered to not result in significant adverse impacts. jar Mid Basin Centennial Park �genl4j Project Final EIR 5 -92 Section 5 Construction Emissions GHGs would be emitted by off-road and on-road construction equipment and worker vehicles. Construction emissions for the Proposed Project were calculated using CalEEMod. GHG emissions for each construction activity and the total two year construction effort are shown in Table 24. The total construction GHG emissions, which would occur over a two-year period, would be substantially less than the one-year CEQA and NEPA thresholds, Table 24: Estimate Proposed Project Construction Greenhouse Gas Emissions Activity Unit Emissions (MTCO2e) Number of Activities Total Emissions (VITCO2e) Pipefines, Shared Structures, Heritage Site 111 1 ill Well Drilling 66 5 330 Well Development 31 5 155 Well Equipping 2 4 8 Paving Total construction Emissions 13 1 13 617 SCAQMD CEQA Threshold (MTCO2elyear 10,000 Exceeds Threshold No CEO NEPA Threshold MTC D2e/year) 25,000 Exceeds Threshold No 0 bpe Appendix B to, CAEFMA Model Out. uts Operational Emissions The electrical energy use for the Proposed Project is estimated at 1,100 kilowatt hours (kWh) per month. Estimated annual operational GHG emissions for the Proposed Project are shown in Table 25, The annual Proposed Project operational GHG emissions would be substantially less than the one year CEQA and NEPA thresholds. It should be noted that the Proposed Project would increase the local supply of groundwater and subsequently reduce the demand for imported water, resulting in a reduction in the GHG emissions associated with the energy required to transport water to the region. mw Mid Basin Centennial Park AefW reject Final EIR 5-93 Section 5 Table 25: Estimated Proposed Project Operational GHG Emissions Activity Well Development Emissions (MTCO2e) 77 Electrical Ener9Y 4 Total 81 SCAQMD CEQA Threshold (MTCO2e/ ear 1_ 10,000 Exceeds Threshold No CEQ NEPA Threshold (v1TCO2e/y8ar) 25,000 Exceeds Threshold No 4 Alternative 3: Reduced Intensity Alternative Construction Emissions Construction GHG emissions for Alternative 3 were calculated by the same methods used for the Proposed Project. GHG emissions for each construction activity and the total construction effort are shown in Table 26. The total construction GHG emissions, which would occur over a two-year period, would be substantially less than the one year CEQA and NEPA thresholds. Construction GHG emissions for Alternative 3 would be less than those for the Proposed Project. Table 26: Estimate Alternative 3 Construction Greenhouse Gas Emissions Activity Unit Emissions (MTr,02ej N4m4er of Aptivities Total emls'slons (MT0,02e) Pipelines, Shared Structures, Herftagp Site 105 1 105 Well DriYYin 66 4 264 Well Development 31 4 124 Well Equipping 2 3 6 Paving 13 1 13 Total Construction Emissions 512 SCAQMD CEQA Threshold (MTCO2e/year) 10,000 Exceeds Threshold No CEQ NEPA Threshold (MTCO2e1 year) 25,000 Exceeds Threshold No See A rpendix B far CaIEEMod Mod 0 Outputs Mid Basin Centennial Park 2 9 efVA Project Final EIR 5-94 Section 5 Operational Emissions The electrical energy use for Alternative 3 is estimated at 825 kWh per month. Estimated annual operational GHG emissions for Alternative 3 are shown in Table 27. The annual Alternative 3 operational GHG emissions would be Substantially less than the one year CEQA and NEPA thresholds, Table 27: Estimated Alternative 3 Operational GHG Emissions Activ t — - ---------- Emissions (MTCO2s) Well Developmerit Electrical Energy 77 3 Total 80 SCAQMD CEQA Threshold (MTCO2e/year) 10,000 Exceeds Threshold No CEO NEPA Threshold (MTCO2e/year) 25,000 Exceeds Threshold No ,,,,,A pperidi. B By CMEEMr)d MWei QWpu(5 Alternative 4: Pipeline Design Alternative Construction Emissions Alternative 4 would essentially involve the same pipeline length, mix of construction equipment and hours of operation that would be used for the Proposed Project, except that the water supply pipeline would be configured differently. Therefore, GHG construction emissions for Alternative 4 would essentially be the same as the Proposed Project. As shown in Table 24, the total construction GHG emi:ssi�ons, which Would occur over a two-year period, would be substantially less than the one year CEQA and NEPA thresholds. Operational Emissions Alternative 4 would involve the operation of the same amount of injection wells and monitoring wells that would be used for the Proposed Project. Therefore, GHG operational emissions for Alternative 4 would essentially be the same as the Proposed Project, As shown in Table 25, the annual Proposed Project operational GHG emissions would be substantially less than the CEQA and NEPA thresholds. Mitigation Measures No mitigation measures required. Mid Basin Centennial Park Project Final EIR 5-95 Section 5 Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT HG -2: Would the project conflict with any applicable plan, policy or regulation of agency adopted for the purpose of reducing the emissions of greenhouse gasses" Alternative 1: No Federal ActioniNo Project Linder Alternative 1, the project would not be implemented, No increases in construction GHG emissions or operational GHG emissions would occur within the project area that would have the potential to not meet the AB 32 GHG reduction goals. Alternative 2: Proposed Project As discussed above, the primary State plan and policy adopted for the purpose of reducing GHG emissions is AB 32. The quantitative goal of AS 32 is to reduce GHG emissions to 1990 levels by 2020. The Proposed Project would increase recharge of the local groundwater basin and thereby increase local water supplies and reduce the demand for imported water. Thus, the Proposed Project would reduce the GHG emissions associated with importing wafter from outside the region, which would support State policies, plans, and regulations to reduce GHG emissions. Alternative 3: Reduced Intensity Alternative The analysis of conformance of Alternative 3 with applicable plans and policies for the purpose of reducing GHG emissions would be the same as the analysis for the Proposed Project, Alternative 3 would not conflict with these plans and regulations. Alternative 3 would increase recharge of the local groundwater basin and thereby increase local water supplies and reduce the demand for iimported water. Thus, Alternative 3 would reduce the GHG erissions associated with importing water from outside the region, which would support State policies, plans, and regulations to reduce GHG emissions. Alternative 4: Pipeline Design Alternative The analysis of conformance of Alternative 4 with applicable plans and policies for the purpose of reducing GHG emissions would be the same as the analysis for the Proposed Project. Alternative 4 will not conflict with these plans and f Mid Basin Centennial Park Ycl*Wn lLProject Final FIR 5 -96 Section 5 regulations. Alternative 4 will increase recharge of the local groundwater basin and thereby increase local water supplies and reduce the demand for imported water, Thus, Alternative 4 will reduce the GHG emissions associated with importing water from outside the region, which will support State policies, plans, and regulations to reduce GHG emissions. Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact Mid Basin Centennial Park 2:1 Project Final EIR 5-97 k. bfA Section 5 5.8 HYDROLOGY[WATER QUALITY This section provides a discussion of the hydrological conditions and water quality conditions within the project area and potential hydrology and water quality impacts associated with construction and operation of the Mid Basin Centennial Park Injection Well Project, The analysis includes a Phase 1 Environmental Site Assessment prepared by EEI Geotechnical and Environmental Solutions in May of 2015 and a Travel Time and Mounding Analysis prepared by the Orange County Water District in June of 2015. The Travel Time Analysis and the Mounding Analysis is presented in Appendix F. and the Phase 1 Environmental Site Assessment is presented in Appendix F1 5.8.1 Affected Environment The project site is located within the lower Santa Aria River Watershed. The Santa Ana Watershed is the largest watershed in coastal Southern California, consisting of over 2,800 square miles and encompassing parts of Riverside, San Bernardino and Orange Counties, Surface water bodies within the vicinity project area include the Santa Ana River, Greenville Banning Flood Control Channel and Centennial Lake. The project site also overlies the Orange County Groundwater Basin. Santa Ana River The Santa Ana River is the most prominent hydrologic feature within the Santa Ana River Watershed. The Santa Ana River is over 100 miles in length and has over 50 tributaries. The headwaters for the Santa Ana River are in the San Bernardino Mountains to the northeast.. The river extends westerly through the Santa Ana Valley to the Prado Basin where it is joined by several tributaries near Prado Darn. Downstream of Prado Dam, the Santa Ana River flows through the Santa Ana Mountain Canyon into Orange County before discharging into the Pacific Ocean. The flows of the Santa Aria River consist of storm flows and perennial flow (base flow) that increases in the winter and decreases in the summer. The base flow of the Santa Ana River consists primarily of treated wastewater discharged from upstream waste water treatment plants. Since 1933, OCWD has been managing the Orange County Groundwater Basin. The primary source to replenish the groundwater basin is surface water flows from the Santa Ana River. The surface water flows are diverted into a series of recharge basins that are maintained by OCWD. Virtually all of the base flow of the Santa Ana River is captured by OCWD for groundwater recharge and a portion of the total storm flow of the Santa Ana River is captured by OCWD for groundwater recharge. The volume of groundwater recharge from storm flows is a function of precipitation intensity, duration, impervious area arid distribution of sterns over a Mid Basin Centennial Park 2962446 Project Final EIR 5-98 Section 5 given year. Although storm flows average approximately 33 percent of the total Santa Ana River flows, they average a lower percentage of the total water that is recharged. This is primarily because the magnitude of storm flow releases from Prado IDam often greatly exceeds the percolation capacity of the recharge facilities. Storm water that is not captured by OCWD flows into the ocean. Greenville Banning Flood Control Channel The Greenville-Banning Flood Control Channel is a regional flood control facility owned and operated by the County of Orange. The flood control channel drains approximately an 8 acre area. The drainage area is primarily within the Cities of Santa Ana and Costa Mesa. The segment of the channel along the frontage of Centennial Park and the Heritage Museum is approximately 12 feet in width with a rip rock siding and a soft bottom. Downstream of the Heritage Museum the channel transitions into a 12 foot by 12 foot reinforced concrete box channel, Centennial Lake Centennial Lake is an existing man-made lake in Centennial Park. The lake has soft side walls an impermeable clay bottom. Presently, the lake is filled with potable water supplies, The lake provides passive and active recreation such as fishing and model boating, but not full contact swimming, Orange County Groundwater Basin The Orange County Groundwater Basin underlies central and northern Orange County and is bordered by the Santa Ana Mountains to the east, the Pacific Ocean to the west, the Newport-Ilnglewood Fault to the southwest and Coyote Hills to the north. The groundwater basin is contiguous and directly connected with the Central Basin of Los Angeles County to the northwest. Depending on location, the fresh-water-bearing alluvial deposits beneath the coastal plain of Orange County range in thickness from 500 feet to 2,000 feet. These alluvial deposits consist primarily of unconsolidated stream channel, marine terrace, and alluvial deposits of Pleistocene to Recent age. OCWD modeling of the Orange County groundwater basin indicates that the basin can be managed effectively to yield 460,000 to 490,000 acre feet per year (afy) without adversely affecting the condition of the groundwater basin provided that sufficient recharge is available. Groundwater Replenishment System The water supply to the Centennial Park Injection Well Project would be advanced treated recycled water from OCWD Groundwater Replenishment System (GWRS). The GWRS is a joint water reclamation project with OCWD and the Orange County Sanitation District (OCSD). The GWRS takes secondary treated wastewater and through advance treatment treats the water to meet Mid Basin Centennial Park j�l &&nkbProlect Final EIR 5-99 Section 5 drinking water standards. Currently one-half of the treated water is conveyed through a 48-inch to 78 -inch diameter pipeline along the west levee of the Santa Ana River from the GWRS plant in Fountain Valley to Kraemer Basin, Miller Basin and Miraloma Basin in the City of Anaheim where it percolates into the groundwater basin. The other half of the GWRS water is injected into the groundwater basin along the coast to create a barrier that protects the groundwater basin from salt water intrusion. The use of the GWRS recycled water for groundwater replenishment and seawater barrier purposes is permitted under RWQCB Order R8 -2004-0002, and Subsequent amendment 88-2008-0058, These two permits specify water recycling requirements for the GWRS. The perrnit incorporates Draft Groundwater Recharge Criteria, Findings, Conditions and Recommendations from the California Department of Public Health. 5.8.2 Regulatory Framework The following is a discussion of Federal, State and local water resource programs that are applicable to the Mid Basin Centennial Park Injection Well Project. Federal/State Regulations Federal Clean Water Act The objectives of the Clean Water Act are to restore and maintain the chemical, physical, and biological integrity of Waters of the United States. The Clean Water Act establishes basic guidelines for regulatiing discharges of pollutants into the Waters of the United States and requires states to adopt water quality standards to protect health, enhance the quality of water resources and to develop plans and programs to implement the Act. Below is a discussion of sections of the Clean Water Act that are relevant to the Mid Basin Centennial Park Injection Well Project- Section 401: Section 401 of the Clean Water Act requires an applicant fora 'federal permit that involves a discharge into Water of the United States to obtain certification that the discharges would not result in adverse water quality impacts. This process is known as the Water Quality Certification, For projects in Orange County, the Santa Ana Regional Water Quality Control Board (RWQCB) issues Section 401 Water Quality Certifications. Section 402: Section 402 of the Clean Water Act established the National Pollution Discharge Elimination System (NPDES) to control water pollution by regulating point sources that discharge pollutants into Waters of the United States. In the State of California, the EPA has authorized the State Water Mid Basin, Centennial: Park A161M Project Final EIR 5-100 Section 5 Resources Control Board (SWRCB) the permitting authority to implement the NPDES program. The State Water Resources Control Board issues two baseline general permits, one for industrial discharges and one for construction activities (General construction Permit). Additionally, NPIDES Program includes the long- term regulation of storm water discharge from medium and large cities (MS4 Permit), The County of Orange is the primary permit holder of the MS4 Permit and the City of Santa Ana is a co-permittee. Short-Term Storm Water Management Storm water discharges from construction sites with a disturbed area of one or more acres are required to either obtain individual NPIDES pert-nits for storm water discharges or be covered by a Construction General Permit, Coverage under the Construction General Permit requires filing a Notice of Intent with the State Water Resources Control Board and preparation of storm water pollution prevention plan (SWPPP). Each applicant under the Construction General Permit must ensure that a SWPPP would be prepared prior to grading and implemented during construction. The primary objective of the SWPPP is to identify, construct, implement, and maintain Best Management Practices (BMPs,) to reduce or eliminate pollutants in storm water discharges and authorized non -storm water discharges from the construction site during construction. BMPs include: programs, technologies, processes, practices, and devices that control, prevent, remove, or reduce pollution. Long-Term Storm Water Management The Mid Basin Centennial Wells Injection Well Project would be implemented in the City of Santa Ana. The City of Santa Ana is a co-permittee to the County of Orange NPIDES MS4 Storm Water Permit and is responsible for the implementation of the permit requirements. Under the NPIDES MS4 Storm Water Permit, construction projects are defined as Priority Projects or Non-Priority Projects based on the type of project and/or level of development intensity, Priority Projects Projects that are determined to be a Priority Project are required to prepare a Priority Project WQMP based on the County of Orange Model WQMP. The Priority Project WQMP is required to demonstrate that a project would be able to infiltrate, harvest, evapotranspire or otherwise treat runoff generated from an 85L" percentile storrn over a 24 hour period. The Model WQMP requires that Low Impact Development (LID) site design principles be incorporated into the project to reduce and retain runoff to the maximum extent practicable. Such LID site design principles include, but are not limited to, iminimizing impervious areas, and designing impervious areas to drain to pervious areas. M0 Basin Centennial Park j ,tdn VlProject Final EIR 5-101 Section 5 Non-Priority Projects Certain projects that do not meet the Priority Project criteria are considered Non- Priority Projects and require preparation of Non-Priority Project Plans (NPP). The Non-Priority Project Plan requires documentation of the selection of site design features, source control and any other BMPs included in a project. Section 404: Section 404 of the Clean Water Act established a permitting program to regulate the discharge of dredged or filled material into waters of the United States. The permitting program is administered by the US Army Corps of Engineers and is enforced by the Environmental Protection Agency. Section 303 (d)- Under Section 303 (d) of the Clean Water Act, the SWRCB is required to develop a list of impaired water bodies, Each RWQCB is responsible for establishing priority rankings and developing action plans, referred to as total maximum daily loads (TMDLs) to improve water quality of water bodies included in the 303(d) list. Presently, Santa Ana River Reach 2 (17tt" Street in Santa Ana to Prado Dam) has been listed as impairment for indicator bacteria. The TMDLs for the Santa Ana River Reach 2 is required, to be prepared before 2025. The Santa Ana River Reach 1 (Pacific Ocean to 171" Street in Santa Ana) is not listed as impaired. Safe Drinking Water Act The Safe Drinking Water Act (SDWA) was established to protect the quality of drinking water in the United States. This law focuses on all waters actually or potentially designed for drinking use, whether from above or below ground sources. The SDWA and subsequent amendments authorize EPA to establish health-based standards, or maximum contaminant levels (MCLs), for drinking water to protect public health against both natural and anthropogenic contaminants. All owners or operators of public water systems are required to comply with these primary (health-related) standards, State governments, which can be approved to implement these rules for EPA, also encourage attainment of secondary (nuisance-related) standards. At the Federal level, EPA administers the SDWA and establishes MCLs for bacteriological, organic, inorganic, and radiological constituents. At the State level, California has adopted its own SDWA, which incorporates the federal SDWA requirements with some requirements specific only to California. The 1996 SDWA amendments established source water assessment (SWA) programs pertaining to untreated water from rivers, lalkes, streams, and groundwater aquifers used for drinking water supply. According to these amendments, EPA must consider a detailed risk and cost assessment, as well as best available peer-reviewed science, when developing standards for drinking water. These programs are the foundation of tL Mid Basin Centennial Park Ae_ldi Project Final EIR 5-102 Section 5 protecting drinking water resources from contamination and they avoid costly treatment to remove pollutants. In California, the Drinking Water Source Assessment and Protection (DWSAP) program fulfills these federal mandates. The California State Water Resources Control Board Division of Drinking Water is the primary lead agency for developing and, implementing the DWSAP program and responsible for performing the assessments of existing groundwater sources, OCWD was a contributing, working member of the technical advisory committee convened to assist California Department of Public Health with development of the DWSAP, which was submitted and approved by EPA in 1999, Drinking Water Standards California's Safe Drinking Water Act requires California State Water Resources Contra] Board Division of Drinking Water to administer laws relating to drinking water regulation, including setting and enforcing both Federal and State drinking water standards and administering water quality testing programs. Current drinking water regulations include both primary and secondary standards (California Code of Regulations Title 22) Compliance with primary standards is mandatory, because these standards are based an potential health effects on water users. Secondary standards are those parameters that may adversely affect the aesthetic quality of drinking water, such as taste and odor. These standards are not Federally enforceable, although California State Water Resources Control Board Division of Drinking Water reserves the right to enforce secondary standards when warranted. The primary standards define MCLs that cannot be exceeded by any public or private water system. State law requires California Department Of Public Health to set each MCIL as close to the corresponding Public Health Goal (PHG) as !is economically and technically feasible, placing primary emphasis on the protection of public health. The PHG, as determined by the California Office of Health Hazard Assessment (OEHHA), is the concentration of constituents that do not pose any significant risk to public health, and which contributes to the determination of MCLs. When the economic impact on water Suppliers and consumers proves excessive compared to the reduction in health risk, California State Water Resources Control Board Division of Drinking Water has the authority to set the MCL above the level of the PHG. Additionally, when current testing or treatment technology proves Cannot reliably ensure drinking water contamination levels would be at or below the PHG, California State Water Resources Control Board Division of Drinking Water can set the I above the level of the PHG. Notification Levels are not enforceable standards, but instead serve as advisory or recommended levels. If a constituent is detected above its Notification Level in a drinking water source, Health and Safety Code §116455 requires timely notification of the local governments by Mid Basin Centennial Park �j dn.V\LpI1I Project Final EIR 5-103 g 204 Section 5 drinking water suppliers. California State Water Resources Control Board Division of Drinking Water recommends that suppiliers, inform their customers about the presence of the constituent, and about associated health concerns. Additionally, suppliers are recommended to remove the source from service when a contaminant significantly exceeds Notification Level concentrations. This specific recommendation depends on the toxicological endpoint (i.e., cancer risk or non-cancer effects) that provides the basis for the Notification Level, State of California Porter Cologne Water Quality Control Act The Porter Cologne Water Quality Act of 1967 requires the SWRCB and the nine RWQCBs to adopt water quality criteria for the protection and enhancement of Waters of the State of California, including both surface waters and groundwater. The SWRCB sets statewide policy and together with the RWQCB, implements State and Federal water quality laws and regulations. Each of the nine regional boards adopts a Water Quality Control Plan or Basin Plan. The project area is included within the Santa Ana River Basin Plan. As shown in Table 28 the Basin Plan divides the Santa Ana River into 6 reaches. Centennial Park and Heritage Museum are both adjacent to Reach 1 of the Santa Ana River, Table 28: Reaches of the Santa Ana River Reach Reach 1 Location Tidal Prism to 17" Street Reach 2 17" Street to Prado Dam Reach 3 Prado Dam to Mission Boulevard Reach 4 Mission Boulevard to San Jacinto Fault Reach 5 Sari Jacinto Fault to Seven Oaks Dam Reach 6 Seven Oaks Darn to Headwaters Santa Ana River Basin Plan Beneficial Uses The Santa Ana River Basin (Basin Plan) designates beneficial uses for waters in the Santa Ana River Watershed and provides quantitative and narrative criteria for a range of water quality constituents applicable to certain receiving water bodies in order to protect these beneficial uses. Specific criteria are provided for the larger water bodies within the region as well as general criteria or guidelines for ocean waters, bays and estuaries, inland surface waters, and groundwater basins, The beneficial uses in the Basin Plan are described in Table 29. IQ Mid Basin Centennial Park �je&2kbProject Final FIR 5-104 Section 5 NOW&I-DiNIM1111 Abbreviation Beneficial ljse GWR Groundwater Recharge waters are used for natural or artificial recharge of groundwater for purposes that may include, but are riot limited to, future extraction, maintaining water quality or halting saltwater intrusion into freshwater aquifers. REG 1 Water Contact Recreation waters are used for recreational activities involving body contact with water where ingestion of water is reasonably possible. These uses may include, but are not limited to swimming, wading, water skiing, skin and Scuba diving, surfing, whilewater activities, fishing and use of natural hot springs, REC 2 Non-Contact Water Recreation waters are used for recreational activities involving proximity to water, but not normally body contact with water where ingestion of water would be reasonably possible. These uses may include, but are not limited to picnicking, sunbathing, hiking, beachcombing, camping, boating, tide pool and marine life study, hunting, sightseeing and aesthetic enjoyment in-conjunction with the above, activities, WARM Warm waters support warm water ecosystems that may include but are not limited to, preservation and enhancement of aquatic habitats, vegetation, fish, and wildlife, including invertebrates. LWARM- Limited Warn Freshwater Habitat waters support warn) water ecosystems which are severely limited in diversity and abundance. COLD Gold Freshwater habitat waters support coldwater ecosystems. BIOL Preservation of Biological Habitats of Special Significance waters support I designated areas of habitats. WILD Wildlife Habitat waters support wildlife habitats that may include, but are not limited to the preservation and enhancement of vegetation and prey species used by waterfowl and other wildlife, RARE Rare, Threatened or Endangered Species (RARE) waters support habitats necessary for the survival and successful maintenance of plant or animal species designated under state or federal law as rare, threatened or endangered. MUN Municipal and Domestic Supply waters are used for community, military, municipal or individual water supply systems, These uses may include, but are not limited to drinking water supply. AGR Agricultural Supply waters are used for farming, horticulture or ranching. These uses may include, but are not limited to irrigation, stock watering, and support of vegetation for range grazing. IND Industrial Service Supply waters are used for industrial activities that do riot depend primarily on water quality. These uses may include, but are Mid Basin Centennial Park �166'n Wroject Final EIR 5-105 -i Section 5 Waters bodies potentially affected by the Mid Basin Centennial Park Injection Well Project includes; the Santa Ana River Reach 1, Greenville Banning Flood Control Channel, Centennial Lake and the Orange County Groundwater Basin. According to the Basin Plan, the Greenville Banning Flood Control Channel and Centennial Lake have not been identified for Beneficial Uses. The beneficial uses for Santa Ana River Reach 1 and the Orange County Groundwater Basin are shown in Table 30. Table 30: Beneficial Uses Beneficial Use Municipal Agriculture not limited to maiing, cooling water supply, hydraulic conveyance, gravel Orange County Groundwater Basin x x washing, fire protection and oil well depressurization. PROC Industrial Process Supply waters are used for industrial activities that Industrial Processes depend primarily on water quality. These uses may include, but are not x limited to, process water supply and alb uses of water related to product NL x manufacture or food preparation NAV Navigation waters are used for shipping, travel, or other transportation by NL private, commercial or military vessels POW Hydropower Generation waters are used for hydroelectric power Wild Waters generation, Comm Commercial and Sport fishing waters are used for commercial or NL recreational collection of fish or other organisms AGR Agricultural Supply waters are used for farming, horticulture or ranching. These uses may include, but are not limited to irrigation, stock watering, and support of vegetation for range grazing Waters bodies potentially affected by the Mid Basin Centennial Park Injection Well Project includes; the Santa Ana River Reach 1, Greenville Banning Flood Control Channel, Centennial Lake and the Orange County Groundwater Basin. According to the Basin Plan, the Greenville Banning Flood Control Channel and Centennial Lake have not been identified for Beneficial Uses. The beneficial uses for Santa Ana River Reach 1 and the Orange County Groundwater Basin are shown in Table 30. Table 30: Beneficial Uses Beneficial Use Municipal Agriculture Santa Ana. River Reach I NL NL Orange County Groundwater Basin x x Industrial NIL x Industrial Processes NL x Groundwater Recharge Recreation 1 NL x NIL NL Recreation 2 x NL Warm Waters I NL Wild Waters I NL Rare Waters NL NL NL Not UWA, X P'e'SW'L O' Pnte,Otial US0. Ik MWInittonl Benefimal Use �Q,, ) Mid Basin Centennial Park Lje&k Project Final EIR 5-106 Section 5 Water Quality Objectives The RWQCB establishes water quality objectives in the Basin Plan to ensure the protection of beneficial uses, including the protection of water quality of the Orange County Groundwater Basin, According to the Basin Plan, no water quality objectives have been established for the Greenville Banning Flood Control Channel and Centennial Lake. The water quality objectives for the Santa Ana River Reach 1 and the Orange County Groundwater Basin are shown in Table 31. Table 31: Water Quality Objectives Reach TDS HARD Na CI I TIN � 504 � COD Santa Ana River Peach I NL NL NL NL NL NL NL Orange County Groundwater Basin 580 NIL NL NL 3A NL NL NIL. Nol Listed (I F IV(-,' YPW I Moving Averuge rxnc,en1rMxmI in Lhttt; (.,F Mifligraiii.9 Per Lilei Orange County Water District Groundwater Water Management Plan The Groundwater Management Plan identifies the OCWD's goals, and basin management objectives in protecting and managing the Orange County Groundwater Basin. The Groundwater Management Plan also describes factors for the OCWD's Board of Directors to consider in making decisions regarding how much pumping the basin can sustain. Specific projects that could be developed as a result of recommendations Would be separately reviewed and approved by the OCWD's Board! of Directors and processed for environmental review prior to project implementation. The Groundwater Management Plan does not commit OCWD to a particular program or level of basin production, but describes the factors that would be considered and key issues as the Board of Directors makes basin management decisions on a regular basis each year. Potential projects that are conceptually described in the Groundwater Management Plan are described in more detail in the OCWD's Long-Term, Facilities Plan. OCWD's goals in managing the Orange County Groundwater Basin are as follows: To protect and enhance the groundwater quality of the Orange County groundwater basin; • To protect and increase the sustainable yield of the basin in a cost effective manner; and n If Project Final EIR 5-107 Mid Basin Centenniial Park Section 5 • To increase the efficiency of OCWD operations OCIND Groundwater Quality Protection Policy OCWD conducts extensive programs aimed at protecting the quality of the water in the Orange County Groundwater Basin. These programs include groundwater monitoring and participation in watershed water quality studies and regulatory programs. Additionally, OCWD provides technical assistance to local water Suppliers on the preparation of the State of California Drinking Water Source Assessment Program. The program requires all well owners to prepare a drinking water source assessment and establish a source water protection program for all new wells. Through its monitoring program and participation in the State of California Drinking Water Source Assessment Program, OCWD can effectively monitor groundwater quality. City of City Santa Ana General Plan The following objectives, policies and programs from the City of Santa Ana General Plan are relevant to the Proposed Project. • Provide sufficient water of adequate quality for all users. • Conserve water resources in commercial, industrial, residential and recreational uses, • Support identification and development of new sources of water, • Encourage multiple use of water and other natural resource facilities, such as reservoirs and flood control channels. 5.7.3 Threshold of Significance 1 Would the project violate Regional Water Quality Control Board Water Quality standards or waste discharge standards? 2. Would the project substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table? I Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the Course of a stream or river, in a manner which would result in flooding on or offsite? 4. Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, or substantially increase the rate or amount of Q:l Mid Basin Centennial Park I 2g6Qniffroject Final EIR 5-108 Section 5 surface runoff in a manner which would result in substantial erosion or siltation on-or off-site? 5. Would the project create or contribute runoff water which would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff. 6. Would the project otherwise degrade water quality? 7, Would the project place within a 100 -year flood hazard structures which would impede or redirect flood flows. 5.7,4 Project Impacts IMPACT HWQ-1: Would the project violate Regional Water Quality Control Board Water Quality standards or waste discharge standards? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. Recycled water from OCWD GWRS System would not be injected into the groundwater basin at Centennial Park and there would be no potential for conflicts with the Santa Ana River Basin Plan or RWQCB standards regarding use of GWRS recycled water to replenish the Orange County Groundwater Basin. Alternative 2: Proposed Project The Source of water for the Mid Basin Centennial Park Injection Well Project Would be advanced recycled water from GWRS water treatment plant. The use of the GWRS recycled water for groundwater replenishment would be permitted under RWQC13 Order RS-2004-0002, and subsequent amendment 88 -2008- 0058. These two permits specify water recycling requirements for the GWRS. Compliance with the Regional Water Quality Control Board permit requirements would ensure that the use of GWRS as the source of water for the Mid Basin Centennial Park Injection Well Project would not violate Regional Water Quality Control Board recycled water quality standards, Beneficial Uses The Greenville Banning Flood Control Channel and Centennial Lake are not included, in the Basin Plan and have not been identified for beneficial uses. Therefore, no conflicts with beneficial uses for these two bodies would occur. Santa River Reach 1 has been identified for REC 1 and REC 2 Beneficial Uses and Intermittently Beneficial Uses for Warm and Rare Waters. The Proposed Project would not discharge waters or materials or involve any activities that would be in conflict with Beneficial Uses established for Santa Ana River Reach 1. rrm Mid Basin Centennial, Park A'1&_r2Vf6 Project Final EIR 5-109 Section 5 The Proposed Project involves the construction of a series of injection wells to replenish the Orange County Groundwater Basin. The source of water for injection wells Would be advanced treated recycled water from the GWRS water treatment plant, The ground water that would be replenished with GWRS water would be consistent with beneficial uses identified in the Basin Plan, in that the waters would be available for the following beneficial uses Municipal Water Supply, Agriculture, Industrial and Industrial Processes. Water Quality Objectives The source of water for Proposed Project would be recycled water from OCWD GWRS water treatment plant. The RWQCB order that permits GWRS water to replenish the groundwater basin requires that the GWRS water meet all water quality objectives in the Basin Plan, The implementation of the Proposed Project would not conflict with water quality objectives identified in the Basin Plan, Section 303 (d) Impaired Water Bodies The construction and operation of the Proposed Project would not discharge elevated levels of indicator bacterial into Reach 1 of the Santa Ana River, Therefore, the implementation of the Proposed Project would not further impair any Section 303 (d) listed water body. Alternative 3: Reduced Intensity Alternative Under Alternative 3, potential conflicts and impacts to Basin Plan beneficial uses, water quality objectives and Section 303 (d) listed water bodies would be at the same level as the Proposed Project. No adverse impacts would Occur. Alternative 4: Pipeline Design Alternative Under Alternative 4, potential conflicts and impacts to Basin Plan beneficial uses, water quality objectives and Section 303 (d) listed water bodies would beat the same level as the Proposed Project, No adverse impacts Would occur, Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4, No adverse impact Mtd Basin Centennial Park I ig6nJill Project Final EIR 5-110 Section 5 IMPACT HW Q-2: Would the project substantially deplete groundwater supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the tonal groundwater table? Alternative 1: No Federal Action /No Project Under Alternative 1, the project would not be implemented. The injection wells within Centennial Park would not be constructed and there would not be any increase in groundwater recharge capacity within the project area. Alternative 2: Proposed Project Groundwater Supply Within Centennial Park groundwater was identified to occur at 13 feet to 23 feet below the ground surface. Depending on the depth of excavation for the underground vaults and where the construction would be conducted, groundwater could be encountered and groundwater dewatering activities could be required. The groundwater would be discharged into a local storm drain and then into the Greenville Banning Channel. The amount of ground water discharged from the dewatering activities would be minimal compared to the overall amount of water in the groundwater basin and would have a less than significant impacts on groundwater supplies. The Mid Basin Centennial Park Injection Well Project would add an estimated 12 MGD of additional groundwater recharge capacity into the Orange County Groundwater Basin. Additionally, the operation of the Mid Basin Centennial Park Injection Wells Project would free up capacity in other OCWD recharge facilities to allow for the capture of additional amounts of storm flow for groundwater recharge. Implementation of the Proposed Project would', have a beneficial impact on groundwater supplies. Demonstration Mid -Basin Injection JCWD's Demonstration Mid -Basin Injection (DMBI) Project infrastructure includes one full -scale injection well (MB1 -1) equipped with a dedicated back flushing pump; associated pipelines and appurtenances for GW RS injection water supply and back flush discharge; and two, multi -zone, nested, down gradient groundwater monitoring wells (SAR -10 and SAR -11). Injection operations at well MBI -1 began in April 2015. The injection flow rate has varied from approximately 1.5 to 2 million gallons per day (MGD). Backwash events are conducted to maintain the injection performance and occur for an approximate duration of 40 minutes of continuous pumping at a flow rate of 3,000 gallons per minute. Backwash events are currently conducted with MBI -1 approximately three times per week. k Mid Basin Centennial Park 9iP97A Project Final E I R 5 -111 Section 5 Both in the lead up to and then after the onset MBI-1 injection operations, groundwater quality data has been collected from down gradient monitoring wells SAR-10 and SAR-11 1 to track the fate and transport of recycled water, as well to monitor post-injection water quality. In 2015, monthly sampling of monitoring well SAR-10 occurred in the lead up to MBI-1 injection operations, with biweekly sampling commencing thereafter, Quarterly sampling occurred at SAR-1 1 until late May 2015, after which bi-weekly sampling began. Chloride is a conservative tracer, and thus the arrival of GWRS water at a monitoring well can be inferred from the progressive change in quality with each well zone by comparing the pre-injection concentration (-13-18 mg /L, depending on the specific zone) to the GWRS injection supply (-10 mg/L currently). Sulfate is typically considered less conservative in the subsurface, but features a greater difference between the background concentration (-39-44 mg/L) as compared to the current GWRS injection supply (-1 mg/L), Both chloride and sulfate show the clear arrival of GWRS water at all zones, first at SAR-1 0 (ranging between -1 -4 weeks, depending an the zone) and then at SAR-1 1(-6-12+ weeks). The mobilization of arsenic from aquifer sediments has been observed at some locations down gradient of GWRS water injection at the Talbert Seawater Intrusion Barrier and surface recharge in the Anaheim Forebay area. Arsenic and chloride trends from monitoring wells SAR -10 and SAR-1 I were evaluated to assess the potential for arsenic mobilization due to injection at MBI-1. At SAR- 10, the pre-injection background arsenic concentration ranged from non-detect (ND; less than 1 ug/L) to 2.5 ug/L', with the arrival of GWRS water, concentrations have increased to as high as 6.5 uglL. SAR-1 0 zones 2 and 4 appear to have reached peak arsenic concentrations of 3-0 ug/L and 3,4 ug/L before beginning a downward trend, The Maximum contaminant level (MCL) drinking water limit for arsenic is 10 ug/L. Vanadium is regulated as a notification level (NL) and response level (RL) contaminant in drinking water by the California State Water Resources Control Board's Division of Drinking Water (DDW). The NL is 50 ug/I and the RL is 500 ug/L. Public water system well owners are required to notify the local governing boards (e.g., city council) when a well exceeds the NIL, but the well may remain In service. If the RL is exceeded, then DDW recommends the well be taken out of service. Minor mobilization of vanadium has been previously observed with the arrival of GWRS water in the subsurface at small number of monitoring wells, but with all increases being temporary and remaining well below the 50 ug/L NL Vanadium trends from monitoring well SAR-1 0 were evaluated. The SAR-1 0/1 zone increased from a background concentration of 4-5 ug/L to a maximum of 27,3 LJg/L with the arrival of GWRS water, before subsequently declining to 16,2 ug/L. qW -24;Project Final EIR 5-112 Mid Basin Centennial Park gp6n ( Section 5 Similarly, zone SAFE -10/2 increased to .a MaXiMUM Of 10.3 Ug/L, before subsequently declining to 8,9 ug/L. Zone SAR-10/3 has remained non,-detect (ND, less than 1 ug/L) before and after the arrival of GWRS water. Zone SAR- 1014 has displayed the most significant shows a significant increase in vanadium with the arrival of GWRS water increasing, from approximately 3 ug/L to a maximum of 311 ug/L, before subsequently declining to 137 ug/L. For data from monitoring well SAR-1 1, none of the three zones at this well show any discernible change in vanadium concentration with the documented initial arrivals of GWRS water. Vanadium typically displays rerfox behavior similar to chromium, generally portioning strongly onto solids under reducing conditions and more weakly under oxidizing conditions. However, no increases in chromium have been observed at either SAR-10 or SAR-1 1 with the arrival of GWRS water. Field parameter data from monitoring well SAR-1 0 include dissolved oxygen (DO), oxidation-reduction potential (ORP), pH, and temperature. Since the arrival of GWRS water as SAR- 10, zone 2 has shown a steady increase in DO from approximately 3 mg/L to nearly 6 mg/L, while zone I to has decreased from approximately 3 mgJL to <2 mg/L. Zones 3 and 4 have largely remained at their background levels of 0-2 mg/L. ORP levels in all SAR-1 0 zones 1, 2, and 3 haven't changed significantly with the arrival of GWRS water. The SAR-1 0/4 has displayed a shift from a pre-injection negative ORP to generally positive ORP post-GWRS water arrival; this may help explain the observed mobilization of vanadium in this zone. The field-measured pH in all SAR-1 0 zones has increased steadily with the arrival of GWRS water, from a pre-injection level of -7.5 - 8.0 to 8.0 - 8.7. Similarly, the field-measured temperature in all SAR-10 zones has also increased. Iron and imanganese are two naturally-occurring groundwater constituents that are sensitive to redox conditions in the aquifer. Result at SAR-1 0 for iron and manganese do not show any dear trends with the arrival of GWRS water. NDMA concentrations were evaluated at monitoring well SAR-1 0. Prior to the onset of injection at MBI-1, all zones were consistently ND for NDMA. Since the beginning of injection, concentrations across all zones at the well have varied between 2 - 10 ng/L. The DDW NIL for NDMA is 10 ng/L and the RL is 300 ng/L. Appendix F provides a more detailed discussion of the groundwater quality data. The groundwater quality data from monitoring wells SAR-1 0 and SAR-11 1 indicate that though there are some increases in arsenic, vanadium, and NDMA concentrations, these increases are temporal in nature and localized and are not anticipated to negatively impact water quality such that water quality standards would be violated or beneficial uses of the water would be impaired. Therefore, water quality impacts are determined to be less than significant, Mid Basin Centennial Park gj§&r�40Project Final EIR 5-113 �k..o Section 5 As a part of the DMBI project and the Proposed Project, OCWD would continue monitoring groundwater quality at wells SAR-10 and SAR-11 1 and the new monitoring well to be constructed. The groundwater quality monitoring program would include meta9s, major ions, nutrients, field parameters, and Title 22 organics. The data from the groundwater quality monitoring program would be reviewed by0CWD to ensure that operation of the injection wells does not adversely impact groundwater quality. Additionally, data from the Proposed Project would be reviewed annually with the Independent Advisory Panel established by the National Water Research Institute for the Groundwater Replenishment System, Groundwater Quality-Buffer Area Analysis Current State of California's regulations regarding Groundwater Replenishment Reuse Projects (GRRPs), such as OCWD GWRS, were made final by the California Department of Public Health and formally adopted in 2014. Immediately thereafter, the Drinking Water Division (DDW) responsible for developing the GRRP regulations was transferred from CDPH to the State Water Resources Control Board (SWRCB). The GRRP regulations require a minimum subsurface response retention time (RRT) of two months for Full Advanced Treatment (FAT) projects, along with pathogen log-removal standards that Could require additional subsurface residence time. These RRT requirements call for establishing both primary and secondary boundaries (i.e,, buffer areas); the primary boundary is the traditional area in which the construction of new drinking water wells would be restricted, while the secondary boundary is a zone of potential controlled potable well construction, within which the operation of future new well could extend otherwise materially affect the primary boundary, thereby requiring further study and potential mitigating activities prior to potable well construction. A three-month primary buffer area was derived using the Talbert Gap Barrier Model. This is based on CDPH's prior approval of a three-month primary buffer for the recharge of GWRS water in the OCWD Anaheim Forebay. In order to estimate the shortest residence time to an active drinking water well and the farthest estimated extent of the 3-month buffer area under potential future injection conditions, a model simulation period was selected from November 2011 to June 2012, This period was selected based on an examination of historical groundwater levels since 2008 that represented a period during which the groundwater gradient was calculated to be steepest from the Mid Basin injection project area toward the nearest drinking water production wells, thereby causi:ng the most rapid groundwater flow velocities. Mid Basin Centennial Park2j5-CrZOLSProject Final EIR 5-114 Section 5 An injection rate of 3 VIGD was assumed in the Simulation for existing MBI-1 and for each of the four proposed Centennial Park injection wells. This rate represents the maximum likely injection rate of the injection wells based on the preliminary testing of the existing MBI-1 demonstration well, local hydrogeological conditions, and the availability of G,WRS water. The targeted screen intervals for the proposed injection wells would be similar to those at MBI- 1, encompassing two model aquifer layers (Layers 9 and 11), representing the Omicron/Upper Rho and Main aquifers, respectively. The modeled injection rate was apportioned across the two layers according to their respective local transr-nissivity values. The particle tracking code MODPATH was used to estimate the underground retention time. The results of the MODPATH simulations show that particles in the Omicrom/Upper Rho aquifers (Layer 9) moved much faster than those in the Main aquifer (Layer 11) due to the larger calibrated hydraulic conductivity value in Layer 9. Therefore, only results from Layer 9 are presented here to represent the shortest residence time to a drinking water well. As shown in Figure 17, the primary buffer area was generated by connecting the, model-derived particle locations three months after they would be released. The buffer area is a composite area that encompasses all five injection wells. The closest wells to the primary buffer area would be IRWD-11 2 and IRWD-1 7, The particle tracks in Figure 6 show that particles released at the injection wells would initially radiate away from the injection well locations in all directions, but would predominantly travel to the south and southeast toward Irvine Ranch Water District (IRWD) production wells IRWD-12 and IRWD-17, both of which are screened in Layer 9 and Layer 11. Each small arrow depicted in Figure 17 along the particle tracks represents one month of subsurface travel, The earliest particle arrival time to production wells would be well RWD -17 in approximately 16 months, The estimated injection water arrival time to well IRWD-12 would be approximately 34 months. As shown in Figure 18, the travel direction of the particles would be consistent with the known Principal aquifer groundwater flow gradient in the area. The travel times to wells IRWD-1 2 and IRWD-1 7 calculated by the model would be well in excess of the CDPH1 RRT requirement of three months, Secondary Boundary As mentioned above, a secondary boundary is required by the GRRP Regulations, and its extent would be based on the potential primary boundary expansion when new well and/or increased pumping occurs in the zone between, the primary boundary and the secondary boundary, potentially resulting in groundwater flow gradient changes that could expand or otherwise affect the primary boundary. The secondary boundary was generated using the same Mid! Basin Centennial Park 2jMZMProject Final EiR 5-115 Section 5 approach described above but using the model - derived particle 4 -month travel time area. This is based on CDPH's approval of a four-month secondary buffer for the recharge of GWRS water in the Anaheim Forebay. The model shows that no existing active drinking water production wells would lie within the three-month or four-month buffer areas. Mounding Analysis Mounding (increase in groundwater levels) and potential effects on groundwater flow conditions that could occur as a result of the injection in the mid-basin project area were estimated using an existing numerical groundwater flow model that encompasses the project area and the Talbert Gap Barrier Model. The proposed injection would occur in the Omicron/Upper Rho (Layer 9) and Main aquifers (Layer 11), which are confined aquifers. It was assumed that three million gallons per day (MGD) would be injected at each well location in model Mayers 9 and 11. The injection rate was based on the hydrogeological condition of the area and the availability of GWRS water. Additionally, to be conservative, a twelve-month continuous injection period was assumed to reach, maximum mounding potential. During this period, production wells around this area were operated within their typical historical capacities. To evaluate potential mounding from the injection wells, two simulations were performed: A baseline simulation, in which no mid-basin injection was considered, and an injection Simulation, in which a constant injection amount of 3 MGD was applied to each of the one existing and four proposed mid-basin injection wells. For visual comparison, the simulated water level contours in the Omicron/Upper Rho aquifers (Layer 9) are shown in Figure 18 for both the baseline and proposed injection simulation. Figure 18 shows that, although the shapes of the groundwater contours are different between the two simulations in the immediate vicinity of the injection area, the general direction of groundwater flow would be to the south /southeast in the two simulations. Although the general groundwater flow direction did not appreciably change, the steepness of the hydraulic gradient caused by the mounding was estimated to increase by 1.1 x10`' feet/feet within a 1 -mile radius of the injection area. This represents an increase of 30 percent from the baseline hydraulic gradient of 3,6xl 0-3feet/feet in this area. The estimated hydraulic gradient increase is minimal beyond one mile from the injection site, Mid Basin Centennial Park2jSGr247Project Final EIR 5-116 Section 5 Figure 17: Primary and Secondary Buffer Areas Mid Basin Centennial Park lugenjf6Project Final FIB 5-117 Section 5 Figure 18: Simulated Groundwater Levels with and without Proposed Mid- Basin Injection Mid Bastin Centennial Park ig nifbProject Final EIR Section 5 The resulting water level change, or mound in the Onnicron/Upper Rho aquifer (Layer 9), was contoured and is shown in Figure 19. The results show that after 12 months of constant mid-basin injection, groundwater mounding directly at the injection wells would be approximately 16 feet. The mounding would decrease to 4 feet at approximately 2 miles from the injection wells and would decrease to 2 feet approximately 4 miles from the injection wells. Identification of Possible Contaminant Plumes in Proximity to Mid-Basin Injection Project Area The proposed mid-basin injection wells are located within portions of Centennial Park. A record search and site reconnaissance of the project site and adjoining properties was conducted to identify if there would be potential environmental concerns within the vicinity of the proposed injection Wells The Centennial Park property was listed by DISC as a proposed school investigation site subject to an investigation in 2001, due to past usage as agricultural land (row crops). DTSC subsequently determined that there were not any environmental concerns and that no further action was required at the site after a Preliminary Endangerment Assessment was completed in 2002. The site was subsequently developed as Godinez High School. The following research was conducted to identify possible groundwater contamination in proximity to Centennial Park. Reviewed Phase I Environmental Site Assessment report, which includes regulatory records reviewed to identify sites within one mile of the subject property for possible hazardous waste releases or other clocurnented environmental concerns. Identified wells, that have been sampled for water quality analyses within two miles of the subject property, and conducted an OCWD Water Resources Management System (WRMS) database query for contaminants present in those wells. Mid Basin Centennial Park Project Final EIR 5-119 Section 5 Figure '19. Calculated Mounding frorn Proposed Mid-Basin Injection Mid Basin Centennial Park 28tr:�Jj Project Final EIR 5-120 Section 5 Regulatory Records Review As part of the Phase I Environmental Site Assessment local agencies such as Orange County Fire Authority (0CFA), Orange County Health Care Agency (OCHCA), California Department of Toxic Substances Control (DTSC), and State Water Resources Control Board (SWRCB) were contacted, and State and Federal databases were reviewed to determine if Centennial Park, or any adjacent properties, were listed as hazardous waste generators, underground storage tank releases (UST), or as having other environmental concerns (i.e., spill, leak, or above-ground tank). Environmental sites identified within one mile of the project site are shown in Figure 20, Based on the review of available environmental database and other readily accessible regulatory information, none of the sites identified Figure 20 showed any evidence of existing environmental concerns related to a release of hazardous substances or petroleum products on either Centennial Park or any adjacent properties. Because there is no evidence of presence of a contaminated of plume in the vicinity of the injection well sites, there would be no concern the potential ground water mounding from the injection wells would cause an existing contaminated plume to migrate. Additionally, it is noted that the groundwater mounding occurs in the deeper aquifers and does not affect the shallow aquifer. Vapor Encroachment Screen A Vapor Encroachment Screen (VES) for Centennial Park property was performed to evaluate whether sites that store or dispose Of potential chemicals of concern or have documented releases, could migrate as vapors onto the property. The Vapor Encroachment Screen (VES) performed at the subject property concluded that then- is no potential Vapor Encroachment Condition, due to the lack of known or suspected contaminated properties within the property, Groundwater Quality Data Numerous wells have been installed throughout the Orange County Groundwater Basin by OCWD and other entities. OCWD uses these wells to monitor groundwater quality and groundwater levels throughout the basin. All wells that have been sampled for water quality analyses within two miles of mid -basin injection area are shown in Figure 21 and were queried from OCWD's WRMS for constituents with a State or Federal Primary Maximum Contaminant Level (MCL) or State Notification Level (NL) between May 1, 2005 and May 1, 2015, The water quality data from nearby wells and regulatory records indicate absence of groundwater contamination plumes within two miles of the mid-basin injection site. Mid Basin Centennial Park Adld�� Project Final EIR 5-121 Section 5 Figure 20: Environmental Site Assessment Identified in Phase 1 within One- Mile of Mid-Basin injection Mid Basin Centennial Park j rn Preject Final EiR 5-122 Section 5 Figure 21: Wells within 2 Miles of Mid-Basin Injection Mid Basin Centennial Park 1 e r roject Final EIR 5 -123 82i� Section 5 Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be developed. An additional 9 MGD of groundwater recharge capacity would be provided to the Orange County Groundwater Basin, Compared to the Proposed Project, there would be a decreased amount of groundwater recharge capacity, Under Alternative 3, MBI-2 would not be implemented. Without the operation of M131-2, the flow path from MBI-2 would narrow and the travel' time to wells, IRWD- 17 would increase. Similar to the Proposed Project, Alternative 3 would provide the required primary and secondary buffer area. Additionally, with one less injection well there would be reduced groundwater mounding. Similar to the condition of the Proposed Project, no existing contaminated plumes have been identified in the project area. Therefore, there would be no concern that groundwater mounding from the injection wells would cause existing contaminated plumes to migrate. Alternative 4: Pipeline Design Alternative Under Alternative 4, an alternative pipeline alignment would be constructed. Potential increases in ground water supplies would be the same as the Proposed Project. Because Alternative 4 would have the same amount of wells and in the same locations as the Proposed Project, there would be no conflicts in meeting the 3-month primary buffer area and the 4 -month secondary buffer requirement. No existing contaminated plumes have been identified in the project area. Similar to the Proposed Project there would be no concern that the groundwater mounding from the injection wells would Cause existing contaminated plumes to migrate. Mitigation Measures No mitigation measures required Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2. Beneficial impact Alternative 3: Beneficial impact Alternative 4: Beneficial impact IMPACT HWQ 1 Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, in a manner which, would result in flooding on or offsite? Mid Basin Centennial Park �j 6anj bProject Final EIR 5-124 Section 5 Alternative 1: No Federal Action/No project Under Alternative 1, the project would not be implemented. There would riot be any injection wells constructed in Centennial Park and there would be any need to back flush well water into Centennial Lake or into the Greenville Banning Flood Control Channel. There would be no change to existing flood risks at Centennial Lake or at the Greenville Banning Flood Control Channel. Alternative 2: Proposed Project Under the Proposed Project, water from the Centennial Park injection wells is proposed to be back flushed into the Centennial Lake or into the Greenville Banning Flood Control Channel. Typically, the back flushing operations would occur weekly or every two weeks and could discharge up to 70,000 gallons of well water per minute into Centennial Lake. If a single well back flush occurs the water level in the lake would rise 0.3 inches, Assuming a worst case condition that all four wells were back flushed in one day, a total of 280,000 gallons of water would be discharged into Centennial Lake, The water level in the lake would rise 1.2 inches. Typically, Centennial) Lake maintains 2-3 inches of freeboard in the lake elevation before spilling into an overflow structure that drains into the Greenville Banning Flood Control Channel. Therefore, typically during dry periods the back flushing would not cause the water elevation in Centennial Lake to spill over into the Greenville Banning Flood Control Channel or topple over and cause localized flooding in Centennial Park, In the event there is not sufficient freeboard during dry periods, OCWD would have the flexibility to back flush the wells into the Greenville Banning Flood Control Channel. Assuming a worst case condition that all four wells are back flushed into the Greenville Banningi Flood Control Channel, a total of 7.8 cfs of well water would be discharged into the channel. During dry periods this amount of well water would be an incidental contribution and would not result in significant adverse impacts to the flood control capacity of the Greenville Banning Flood Control Channel, During wet periods and based the intensity of storm conditions there could be the potential that the back flushed water from the injection wells could reduce the flood control capacity of the Greenville Banning Flood Control Channel, OCWD would be required to obtain an encroachment permit from the County of Orange to discharge the back flushed well water into the Greenville Banning Flood Control Channel. Thee encroachment permit would provide conditions to ensure that adequate coordination occurs between the County of Orange and OCWD during storm events to minimize flood risks. With the implementation of Mitigation Measure HWQ-1 potential flood risks along the Greenville Banning Flood Control Chanel would be reduced to a less than significant level. roject Final EIR 5-125 Mid Basin Centennial Park �19&fiAp Section 5 Monthly, the monitoring well at the Heritage MUSPUM Site Would be back flushed as part of the water sampling activities. An average 4,000 to 5,000 gallons of water would be either containerized or discharged in the local storm water system and then into the Greenville Banning Flood Control Channel. The amount of water discharged into the storm water system would not reduce the flood control capacity of the Greenville Banning Flood Control Channel and would not cause localized flooding. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be developed. Assuming a worst case that all three wells were back flushed in one day, a total of 210,000 gallons of water would be discharged into Centennial Lake. The water level in the take Would rise .9 inches. During dry periods the back flushing would not cause the water elevation in Centennial Lake to spill over into the Greenville Banning Flood Control Channel or topple and cause localized flooding in Centennial Park. Similar to the Proposed Project, during wet periods, OCWD would coordinate with the County of Orange to determine if there would sufficient flood control capacity within the Greenville Banning Flood Control Channel. With the implementation of Mitigation Measure HWQ-1 potential flood risks along the Greenville Banning Flood Control Chanel would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, back flushing operations would be same as the Proposed Project. With the implementation of Mitigation Measure HWQ-1 potential flood risks along the Greenville Banning Flood Control Chanel would be reduced to a less than significant level. Mitigation Measures HWQ-1: Prior to construction operations OCWD will obtain an encroachment permit from the County of Orange that allows for the discharging of groundwater from the Mid Basin Centennial Park Injection Well Project into the Greenville Banning Flood Control Channel. Level of Impact after Mitigation Alternative 1. No adverse impact Alternative 2 Less than significant with Mitigation Measure HWO-1. Alternative 3: Less than significant with Mitigation Measure HWQ-1. Alternative 4: Less than significant with Mitigation Measure HWQ-1. Mid Basin Centennial Park y I ri 'reject Final EIR 5-126 1-il Section 5 IMPACT" HWQ -4: Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river, or substantially increase the rate or amount of surface runoff in a manner which would result in substantial erosion or siltation on- or off -site? Alternative 11: No Federal Action /No project Under Alternative 1, the project would not be implemented. There would not be any earthwork activities occurring at Centennial Park or at the Heritage Museum that would expose soils to potential erosion impacts. Alternative 2: Proposed Project Under the Proposed Project, approximately 1.25 acres of area would be disturbed to allow for the construction of the injection well vaults, water supply and back flush pipelines, and shared structures. During earthwork activities there would be the potential that uncovered soils on the project site could be exposed to water erosion and/or wind erosion impacts. Additionally, there would be the potential that construction vehicles and construction equipment could transport sediment onto local streets and into local drainage systems. The Proposed Project would disturb more than one acre of area and would be required to obtain a Construction General Permit from the State Water Resources Control Board. The Construction General Permit requires preparation and implementation of a Storm Water Pollution Prevention Plan (SWPPP) and the filing of a Notice of Intent with the State Water Resources Control Board. With the implementation of Mitigation Measure GEQ -1 potential erosion impacts would be reduced to a less than significant level. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well and reduced amount of pipeline construction would be constructed. Compared to the Proposed Project there would be approximately 4,035 square feet of less soil disturbances and reduced, potential for erosion impacts to occur. Even though there would be decreased amount of soil disturbances, Alternative 3 would still disturb 1.15 acres of area and would be required obtain a Construction General Permit. With the implementation of Mitigation Measure GELD -1 potential erosion impacts would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, the amount of excavation and grading activity would be similar to the Proposed Project. Alternative 4 would disturb more than one acre of area and would be required obtain a Construction General Permit. With the a Mid Basin Centennial Park �, n 61Project Final FIR 5 -127 Section 5 implementation of Mitigation Measure GEO-1 potential erosion impacts would be reduced to a less than significant level. Mitigation Measures GEO-1: Prior to the start of construction OCWD will obtain coverage under the General Construction Permit by the State Water Resources Control Board and in compliance with the permit will file a Notice of Intent with the State Water Resources Control Board and prepare and implement a Storm Water Pollution Prevention Plan. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant with Mitigation Measure GEO-1 Alternative 3: Less than significant with Mitigation Measure GEO-1. Alternative 4: Less than significant with Mitigation Measure GEO-1. IMPACT HWQ-5: Would the project create or contribute runoff water which would exceed the capacity of existing or planned storm water drainage systems or provide substantial additional sources of polluted runoff. Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There Would not be any introduction of new impervious Surfaces or replacement of existing impervious Surfaces at the project site. Within the project area there would be no change to existing rates of storm water runoff. Alternative 2. Proposed Project Construction Surface Water Management Onsite construction activities associated with Proposed Project could generate degraded surface water runoff from the project site into local drainage facilities. To prevent degraded storm water runoff pollutants from entering into existing drainage systems, the construction operations for the Mid Basin Centennial Park Injection Well Project would be required to prepare and implement a Storm Water Poilution Prevention Plan (SWPPP), The SWPPP would contain Best Management Practices to control the surface water runoff and to minimize the potential for it to be conveyed into onsite or offsite drainage systems. With the implementation of Mitigation Measure GEO-1 potential degraded surface water runoff impacts would be reduced to a less than significant level. 0� Mid Basin Centennial Park J 16&ffi Project Final FIR 5-128 Section 5 Long Term Surface Water Management As part of the Proposed Project, water quality requirements (MS4 Permit and local ordinances) must be taken into account. To evaluate the Proposed Project from a water quality perspective, the Proposed Project has been divided into off - site improvements and on-site improvements. Off -Site Improvements (Edinger Avenue) The off-site improvements include the installation of a water line within Edinger Avenue. Installation of utility lines (excluding storm drain) within an existing impervious area are considered exempt from storm water treatment requirements as long as the facility (street, parking lot, etc) receiving the utility is returned back to existing line and grade of the original facility and the original purpose of the facility is maintained. For example, if a water line is added to an existing street, it requires removal of the existing pavement and base layers. Once the water line is installed, the street is repaired to the original line and grade and can serve its original purpose. The Proposed Project would include approximately 6,000 square feet of trenching within Edinger Avenue to accommodate the proposed water supply pipeline. The water supply pipeline improvements would not be subject to water quality treatment requirements based on the requirements noted above. On-Site improvements (within Centennial Park) Within Centennial Park, an additional 45,000 square feet of trenching would occur to Install the water line and electrical conduit. In addition, four injection well vaults would be buried within the existing parking lot totaling 2,200 square feet. The surface of the vaults would be returned back to parking lot surfaces at the original line, grade and purpose. However, the vaults would require approximately 12 surface vault hatches totaling approximately 260 square feet which represents a different surface and purpose than the existing parking lot. Therefore, for conservative purposes, the Surfaces would be incorporated into the impervious surfaces that would count towards the Priority Project WQMP category of "significant redevelopment ". The following improvements for the Centennial Park Mid-Basin Injection Well Project are considered impervious surfaces that would count towards the Priority Project WQMP category of "significant redevelopment": • Shared RecreationYCommunication Structure 1 including rooffine and perimeter sidewalk— 1,731 SF • Shared Recreation/Communication Structure 2 including roofline and perimeter sidewalk - 1, 186 SF • Injection Well Vault Hatches in Parking Lots -260 SF Mid Basin Centennial Park A062A6 Project Final EIR 5-129 Section 5 Total Impervious Surface Addition or Replacement — 3.1'77 S, The total impervious surface improvements do not total 5,000 SF or more, which would be the threshold for a Priority Project Significant Redevelopment, Therefore, the Proposed Project would be considered a Non- Priority Project and would need to prepare a Non-Priority Project Water Quality Plan (NPP). Treatment control BMP's are not required for NPPs. However, the Proposed Project would incorporate 2,045 SF of pervious pavement as a site design feature for a new sidewalk between the Centennial Park parking lot and Shared Recreation/Communication Structure 1, near the Soccer Field complex. The pervious sidewalk would have the capacity to infiltrate the Design Capture Volume (80% Capture Efficiency DCV = 84.1 cu-ft) of the proposed 3,177 SF of impervious area improvements. The soil properties in this area are favorable for infiltration and would be an ideal location for LID BMP implementation. At a design infiltration rate of 0.3 inches/hour and an aggregate base depth of 0.5 feet, a minimum surface area of approximately 481 SF of pervious pavement would be needed (Note. the surface area of pervious pavement is reduced as the aggregate base depth is increased). In this case, there is more pervious sidewalk area than what Would be needed to treat the Design Capture Volume. The Non-Priority Project Water Quality Plan prepared for the Mid Basin Centennial Park Injection Well Project is included in Appendix G. The Water Quality Plan identifies infiltration strategies and storm water control measures to minimize adverse long term storm water management water quality impacts. With the implementation of Mitigation Measure HWQ-2 potential adverse long term storm water runoff management water quality impacts would be reduced to a less than significant level. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed. Compared to the Proposed Project there would be less construction activity and less potential for degraded surface water runoff impacts to occur- Similar to the Proposed Project, a SWPPP Would be prepared and implemented to minimize degraded construction storm water runoff impacts. With the implementation of Mitigation Measure GEO-1 potential degraded surface water runoff impacts would be reduced to a less than significant level. Because one less injection Well Would be constructed there would be a slight reduction in the amount of new and/or replaced impervious surfaces. A total of 2,917 square feet of impervious surfaces would be introduced and /or replaced at the project site. The total impervious surface improvements do not total 5,000 SF or rnore, which would be the threshold for a Priority Project Significant Mid Basin Centennial Park Are_rlki Project Final EIP 5-130 Section 5 Redevelopment. Therefore, Alternative 3 would be considered a Non-Priority Project and would need to prepare a Non-Priority Project Water Quality Plan (NPP). The sarne measures and infiltration concepts proposed in the Mid Basin Centennial Park Injection Well Project Non-Priority Water Quality Plan would apply to Alternative 3. With the implementation of Mitigation Measure HWQ-2 potential adverse long term storm water runoff management water quality impacts would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, the amount of excavation and grading activity would be similar to the Proposed Project. Onsite construction activity under Alternative 4 could generate degraded storm water runoff impacts. With the implementation of Mitigation Measure GEO-1 potential degraded surface water runoff impacts would be reduced to a less than significant level. The amount of new and/or replaced impervious surfaces at the project site would be similar to the Proposed Project and would require the preparation and implementation of a Non-Priority Water Quality Plan. The same measures and infiltration concepts proposed in the Mid Basin Centennial Park Injections Well Project Water Quality Management Plan would apply to the Alternative 4, With the implementation of Mitigation Measure HWQ-2 potential adverse long term surface water runoff management water quality impacts would be reduced to a less than significant level. Mitigation Measures CEO-1: Prior to the start of construction OCWD will obtain coverage under the General Construction Permit by the State Water Quality Control Board and in compliance with the permit will file a Notice of Intent with the State Water Quality Control Board and prepare and implement a Storm Water Pollution Prevention Plan. HWQ-2: The final design of the Mid Basin Centennial Park Injection Well Project will incorporate the storm water management program contained in the approved Mid Basin Centennial Park Injection Well Project Non-Priority Water Quality Plan. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant with Mitigation Measure GEO-1 and HWQ-2. Alternative 3: Less than significant with Mitigation Measure GEO-1 and HWQ-2. Alternative 4: Less than significant with Mitigation Measure GEO-1 and HWQ-2. Mid Basin Centennial Park Aeli Project Final EIR 5-131 Section 5 Alternative 1: No Federal Action/No Project Under Alternative 1, the project Would not be implemented. There would be no constructed related activities or long term operations that would have the potential to degrade water quality. Alternative 2: Proposed Project The Proposed Project has been evaluated if it would be in conflict with the current State of California's regulations regarding Groundwater Replenishment Reuse Projects and has subsequently been determined that the Proposed Project would provide the required primary and secondary buffer areas. No long term adverse water quality impacts would be associated with the injection of GWRS waters into the groundwater basin. During excavation operations there could be the potential that groundwater could be encountered and dewatering activities Would be needed. The water from the dewatering activities would be discharged into a local storm drain and then into the Greenville Banning Flood Control Channel. To ensure there are no adverse water quality impacts from the dewatering activities OCWD would obtain and implement a NPDES dewatering permit from the Regional Water Quality Control Board, Additionally, mitigation measures have been incorporated into the Proposed Project to minimize Construction related and long-term surface water run off impacts associated with the construction and operation of the Proposed Project. With the implementation of Mitigation Measure G,EO-1, HWQ-2 and HWQ-3 potential adverse water quality impacts would be reduced to a less than significant level. Alternative 3. Reduced Intensity Alternative Under Alternative 3, long term operation water quality impacts would be the same as the Proposed Project and would be less than significant. Under Alternative 3, there would be a reduced amount of construction activity and reduced potential for adverse construction related water quality impacts to occur. Similar to the Proposed Project, mitigation measures have been incorporated into Alternative 3 to minimize construction related and long -term surface water run off impacts. With the implementation of Mitigation Measure GEO-1, HWQ-2 and HWQ-3 potential adverse water quality impacts would be reduced to a less than significant level. Alternative 4., Pipeline Design Alternative Under Alternative 4, long term operation water quality impacts would be the same as the Proposed Project and would be less than significant. Under :010 Mid Basin Centennial Park �gel`,, 1 JProject Final EIR 5-132 Section 5 Alternative 4 the amount of construction activity and potential for adverse construction related water quality impacts would be similar to the Proposed Project. With the implementation of Mitigation Measure GEO-1, HWO-2 and HWQ-3 potential adverse water quality impacts Would be reduced to a less than significant level, Mitigation Measures Mitigation Measures GEO-1 and HWQ-2 required. HWQ-3: Prior to conducting dewatering activities OCWD will, receive NPDES Dewatering Permit from the Regional Water Quality Control Board. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant with Mitigation Measure GEO-11, HWQ-2 and HWO-1 Alternative 3: Less than significant with Mitigation Measure GIEO-1, HWQ-2 and HWO-3. Alternative 4: Less than significant with Mitigation Measure GEO-1, HWQ-2 and HWO-3. IMPACT HWO-7: Would the project be located within a 100 -year flood hazard? As shown: in Figure 22, the FEMA Flood Hazard Map for the project area indicates that both Centennial Park and the Heritage Museum are designated Flood Zone D, areas with possible but undetermined flood hazards. The Santa Ana River and the Greenville Banning Flood Control Channel are designated Flood Zone X, areas of moderate flooding between the limits of the 100-year flood and 500-year floods. Alternative 1: No Federal Action/No project Under Alternative 1, the project would not be implemented. There would be no change to existing flood hazard conditions at Centennial Park, Heritage Museum, along the Santa Ana River and along the Greenville Banning Flood Control Channel. Alternative 2: Proposed Project The implementation of the Proposed Project would not involve any construction activities that Would increase flood hazard at Centennial Park or at the Heritage Museum, Mid Basin Centennial Park Adf qe roject Final EIR 5-133 Section 5 Figure 22: FEIVIA Flood Hazard Area Mid Basin Centennial Park 20 W;Qnjl It Project Final EIR 5-134 C - 9 Section 5 To provide water Supply to the injection weils, a water Supply pipeline would be constructed that would extend from the GRWS pipeline at the west levee of the Santa Ana River, along the north side of Edinger Avenue Bridge to the east level of the Santa Ana River. To construct the pipeline, the west and east facing levees would require excavation, All of the construction activity would be outside of the channel and once the pipeline connection is made both levees would be returned to their pre-project condition. The proposed construction activity would not compromise the integrity of both levee structures. The excavation activities into the levee would require an encroachment permit from the County of Orange and a 408 permit from the U.S, Army Corps of Engineers. As part, of the submittal for the encroachment permit and 40B permit, OCWD would submit final design plans that would reflect how the construction activities would not adversely impact the integrity of the west levee and east levee. With the implementation of Mitigation Measures HWQ-4 potential adverse effects associated with construction activities along the west and east levee of the Santa Ana River would be reduced to a, less than significant level. To extend the water supply pipeline from the GWRS pipeline to Centennial Park, the water supply pipeline would need to cross the Santa Ana River, The water supply pipeline would be secured along the north facing nose piers of the Edinger Avenue Bridge and would extend along the entire width of the Santa Ana River, The water supply line would be above the high water mark and would not impede flood flows. The securing of the water supply pipeline to the nose piers of the Edinger Avenue Bridge would not involve any construction activities to the foundation of the bridge structure or the river channel substrate. The placement of the pipeline along the Edinger Avenue Bridge would require an encroachment permit from the County of Orange. As part of the Submittal for the encroachment permit OCWD would submit final design plans that would reflect how the pipeline would be designed and constructed to withstand any inadvertent impact that could occur from County of Orange maintenance activities in the event heavy equipment would be used from the top of the bridge to remove any storm debris that might cling on the bridge nose piers during flood flows. With the implementation of Mitigation Measures HWQ- 4 and HWQ-5 potential adverse effects associated with the placement of the water supply pipeline along the nose pier of the Edinger Avenue Bridge would be reduced to a less than significant level. The Proposed Project would not involve any construction activities to the Greenville Banning Flood Control Chanel that would adversely impact the flood control capacity of the channel. A back flush pipeline has been proposed that would discharge water into an existing gutter catch basin that would drain into the Greenville Banning Flood Control Channel. To avoid potential flooding impacts Mid Basin Centennial Park �g7&2g6Project Final EIR 5-135 4k.'V Section 5 the discharging of the back flushed well water into the Greenville, Banning Flood Control Channel would be coordinated with the County of Orange through an encroachment permit. Alternative 3: Reduced Intensity Alternative Under Alternative 3, there would not be any construction activities that would increase flood hazards at Centennial Park or at the Heritage Museum. The implementation of Alternative 3 would involve the same construction activities on the west and east levees of the Santa Ana River and along the nose pier of the Edinger Avenue Bridge, With implementation of Mitigation Measures HWQ-4 and HWQ-5 potential adverse impacts to the west and east levees of the Santa Ana River and along the nose piers of the Edinger Avenue Bridge would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, there would not be any construction activities that would increase flood hazards at Centennial Park or at the Heritage Museum. The implementation of Alternative 4 would involve the same construction activities on the west and east levees of the Santa Ana River and along the nose piers of the Edinger Avenue Bridge. With implementation of Mitigation Measures HWQ-4 and HWQ-5 potential adverse impacts to the west and east levees of the Santa Ana River and along the nose piers of the Edinger Avenue would be reduced to a less than significant levei. Mitigation Measures HWQ-4: Prior to construction activities occurring along the west and east levees of the Santa Ana River OCWD will obtain an encroachment permit from the County of Orange and 408 permit from the U.S. Army Corps of Engineers- ll Prior to placement of the water supply pipeline along the nose piers of the Edinger Avenue Bridge OCWD will obtain an encroachment permit from the County of Orange and as part of the permit conditions will coordinate with County of Orange Flood Operations on the design of the water supply pipeline to ensure it does not impede flood maintenance activities along the bridge during flood events. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: Less than significant with Mitigation Measure HWQ-4 and HWQ-5. Alternative 3: Less than significant with Mitigation Measure HWQ-4 and HWQ-5, Alternative 4. Less than significant with Mitigation Measure HWQ-4 and HWQ-5. 36 Mid Basin Centennial Park nj _ S�PrDject Final EIR 5 -1 Section 5 This section describes existing land uses on and within the vicinity of the project area, land use compatibility conflicts and potential open space and recreation impacts at Centennial Park and at the Heritage Museum. 5.9.1 Affected Environment Existing Onsite Land Uses Centennial Park Centennial Park is an 87 acre community park located in the southwestern area of the City of Santa Ana. The park site is bounded by the Santa Ana River to the west, Fairview Road and the Greenville Banning Flood Control, Channel to the east, Edinger Avenue to the north and Godinez High School to the south. Centennial Park features a combination of active and passive recreational uses that are centered on a large man-made lake. A loop road extends along the perimeter of the park site providing access to various locations in the park including several parking areas. Additionally, included within the park boundaries is the Santa Ana College Centennial Education Center and Child Development Center which provides adult education classes, pre-school age classes, and day care facilities. Heritage Museum The Heritage Museum is a 12-acre cultural and natural history learning center located in the southwestern area of the City of Santa Ana. The Heritage Museum site is bounded by Godinez High School to the north and west, Mitchell Child Development Center to the east, and industrial buildings to the south. The Heritage Museum contains a historic plaza featuring several buildings from the 1890-s, extensive flora gardens, citrus groves, agriculture demonstration garden area and natural wetland areas. 5.9.2 Regulatory Framework City of Santa Ana General Plan and Zoning Code The City of Santa Ana General Plan (Land Use Element designates Centennial Park Open Space and the Heritage Museum Institutional. The Zorring Code designates both sites as Open Space. The following is a listing of land use policies and goals from the City of Santa Ana General Plan that are relevant to the project. • Ensure that the impacts of development are mitigated. • Protect the community from incompatible land uses, Mid Basin Centennial Park �gd'n Project Final EIR 5-137 -is Section 5 • Support land uses which are consistent with the Land Use Element • Provide adequate amount water for all users. • Conserve water resources in commercial, residential and recreation uses. • Support identification and development of new sources of water. • Encourage multiple use of water and other natural facilities such as reservoirs and flood control channels. • Develop local water recycling programs and cooperate with regional recycling efforts. Centennial Park National Park Service Requirements The National Park Service through a grant deed with the City of Santa Ana restricts uses at Centennial Park. Generally, the deed states that the property shall be for continued use and maintenance as a public park or public recreational purposes. Approval from the National Park Service would be required to construct the Mid Basin Injection Well Project at Centennial Park. 5.9.3 Threshold of Significance 1. Would the project be in conflict with any applicable land use plan, policy or regulation of an agency with jurisdiction over the project adopted for the purpose of avoiding or mitigating an environmental effect? 5.9.4 Environmental Consequences IMPACT LU' -1; Would the project be in conflict with any applicable land use plan, policy or regulation of an agency with jurisdiction over the project adopted for the purpose of avoiding or mitigating an environmental effect? Alternative 1 No Federal Action /No Project Under Alternative 1, the project would not be not be implemented. Centennial Park and the Heritage Museum would continue to be designated for open space and recreation uses and would both continue to operate has a community park and cultural resource learning center. Alternative 2: Proposed Project ,Land Use Compatibility Under the Proposed Project„ the injection wells, monitoring, water supply pipeline and back flushing pipeline would be constructed under existing parking areas and roadways. The construction and long term operation of the Proposed Project . would not result in the loss of usable open space or adversely impact existing open space and recreation activities at Centennial Park or at the Heritage Mluseum. The proposed shared recreation /communication structures, skate park improvements and parking lot improvements at Centennial Park and the site Mid Basin Centennial Park j�rttpoon�j�Project Final EIR 5 -138 Section 5 improvements at Heritage Museum would enhance existing recreational facilities at Centennial Park and at the Heritage Museum. City of Santa Ana Zoning Code In accordance with Zoning Code public utility facilities are a permitted land use in areas that are zoned Open Space. The Propose Project improvements at Centennial Park would not be in conflict with City of Santa Aria Zoning Code. City of Santa Ana General Plan The following its a consistency evaluation of the Proposed Project with relevant General Plan policies and objectives, • Ensure that the impacts of development are mitigated. • Protect the community from incompatible land uses. • Support identification and development of new sources of water. • Encourage multiple use of water and other natural facilities such as reservoirs and flood control channels. • Conservation Element Objective 2.1: Conserve water resources in commercial, resident0l and recreation uses. • Develop local water recycling programs and cooperate with regional recycling efforts. As identified in the Draft EIR all potential significant impacts to Centennial Park and the surrounding area associated with the construction and operation of the Proposed! Project have been reduced to a less than significant level. To avoid potential incompatible land uses conflicts the components of the Proposed Project would be located below existing parking areas and roadways. The Proposed Project would provide additional 12 MGM of groundwater recharge capacity within the Orange County Groundwater Basin- The increase recharge capacity Would provide additional water supplies for the City of Santa Ana. To help conserve potable water, the Proposed Project has been designed to allow the well water from the back flushing of the injection, wells to be discharged into Centennial Lake. The discharging of the well water would reduce the amount of potable water the City of Santa currently discharges into the Centennial Lake to maintain its water level'. The water supply for the proposed injection wells would be advanced treated recycled water from OCWD's Groundwater Replenishment System. The use of the recycled water would help to reduce the regiional demands for imported water supplies. Mid Basin Centennial Park roject Final EIR 5-139 Section 5 National Pat* Service Centennial Park Open Space Requirements The National Park Service through previously executed a grant deed restrictions is required to ensure that Centennial Park is maintained for open space and recreation activities and that any land uses or activities proposed at the park would riot result in in the loss of usable open space or interfere with existing recreation facilities. The following analysis evaluates potential open space impacts associated with the construction and operation of the Proposed Project, Injections Wells and Associated Pipelines The proposed injection wells and water supply pipeline would be placed underneath existing parking areas and roadways. Existing transformers at Centennial Park would be enhanced to provide power to the injection wells and shared recreation/communication structures. There would be no permanent loss of open space associated with the operation of these facilities. The construction operations for the injection wells have been phased where no construction activities would exceed a six month construction period in any one location. during construction operations there would be no temporary loss of usable open space, Shared Recreation/Communication Structures Two above ground shared recreation/communication structures have been proposed at Centennial Park to be jointly used by the City of Santa Ana and OCWD, Shared Structure 1 would be located on an existing asphalt area immediately adjacent to the north end of the soccer field complex. This area provides no usable open space and has been a planned location for a new restroom and changing area to support the Soccer field complex. Shared Structure 1 would consist of 1,050 square feet of area and Would include a 220 square foot public restroom, 550 square foot changing room for soccer teams and 280 square foot utility/communication system room. As part of the improvements, a new 10 foot wide and 200 foot long ACA approved sidewalk would be constructed from the parking area to the soccer complex. The construction of Shared Structure 1 would not result in the permanent loss of usable open space and would expand existing park and recreation amenities at Centennial Park, Shared Structure 2 site is located immediately north of the Centennial Park skate park. Presently, located on the site is 576 square foot structure that includes a degraded public restroom and covered standing area. The existing restroom structure Would be demolished and replaced with a new 596 square foot structure that would include a 212 square foot public restroom, a 178 square foot park ranger office and a 206 square foot utility/communication system room. A Mid Basin Centennial Park 2j6i Q24JProject Final EIR 5-140 Section 5 concrete walkway ranging from 3 feet to 9 feet would be provided around the perimeter of the shared structure. The proposed, share structure would be approximately 20 square feet larger than the existing structure- The increased amount of area would occur around the perimeter of the structure and would not result in the loss of usable open space. The 20 square feet of open space replaced with Shared Structure 2 perimeter walkway would be off -set by the benefits of a new restroom facility and a park ranger office, Centennial Park Skate Park Improvements To increase the defensibility of the existing skate park, the height of the existing fence around the skate park would be increased from 3 feet to 8 feet. Additionally, a surveillance cannera would be installed and wired to the park ranger office in Shared Structure 2 to allow Centennial Park staff to monitor activities at the skate park. The skate park improvements would not reduce any usable open space and would help to maintain existing recreation amenities at Centennial Park. Repaving Centennial Park Parking Lot Presently, the parking areas at Centennial Park are deteriorating. After construction activities are completed the existing parking lot would be repaved. The repaving would occur on existing parking areas and would not reduce any usable open space. The repaving of the parking areas would help to maintain existing park amenities at Centennial Park. Heritage Museum Land Use Compatibility At the Heritage Museum site a below ground monitoring well Would be constructed within an existing dirt parking area. Once the well construction activities are completed the parking area would be resurfaced with decomposed granite- Additionally, under the Proposed Project proposes a series of site improvements to expand the educational amenities at the site including the improvement of the existing drip irrigation system to the agriculture demonstration garden and the installation of education interpretative panels. The long operation and construction activities of the monitoring well would not adversely impact existing open space and cultural activities at the Heritage Museum. City of Santa Ana Zoning Code In accordance with Zoning Code public utility facilities are a permitted land use in areas that are zoned Open Space. Therefore, the Propose Project improvements Mid Basin Centennial Park 2j5J Diw242Project Final EIR 5-141 Section 5 at the Heritage Museum would not be in conflict with City of Santa Ana Zoning Code. City of Santa Ana General Plan The following is a consistency evaluation of the Proposed Project with relevant General Plan policies and objectives. Ensure that the impacts of development are mitigated. • Protect the community from incompatible land uses. Support identification and development of new sources of water, Encourage multiple use of water and other natural facilities such as reservoirs and flood control channels. Conservation Element Objective 2.1: Conserve water resources in commercial, residential and recreation uses. Develop local water recycling programs and cooperate with regional recycling efforts. As identified in the Draft EIR all potential significant impacts to Heritage Museum and the surrounding area associated with the construction and operation of the Proposed Project have been reduced' to a less than significant level. To avoid potential incompatible land uses conflicts the proposed monitoring well would be located below an existing parking area. The proposed monitoring well would provide water quality monitoring to provide additional water supplies for the City of Santa Ana and would help to reduce the regional demands for imported water supplies. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection well would be constructed. All of the other land use components would be the same as the Proposed Project. Similar to the Proposed Project the implementation of Alternative 3 would not result in adverse land use compatibility impacts, would not result in the loss of usable open and would not be in conflict with City of Santa Ana General Plan and Zoning Code.. No adverse land use impacts or conflicts with relevant planning programs would occur. Alternative 4: Pipeline Design Alternative Under Alternative 4, an alternative pipeline alignment would be constructed. All of the other land use components would be the same as the Proposed Project. Similar to the Proposed Project, the implementation of Alternative 4 would not result in adverse land use compatibility impacts, would not result in the loss of usable open and would not be in conflict with City of Santa Ana General Plan and Mid Basin Centennial Park ZWP2143IProject Final EIR 5-142 Section 5 Zoning Code. No adverse land use impacts or conflicts with relevant planning programs would Occur. Mitigation Measures No mitigation measures required. Level of Impact after Mitigation Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact I Mid Basin Centennial Park2ffve Project Final EIR 5-143 Section 5 5.10 NOISE The following analysis is based on a Noise Impact Analysis Report prepared for the Mid Basin Centennial Park Injection Well Project by Vista Environmental in October of 2015. The Mid Basin Centennial Park Injection Well Project Noise Impact Analysis Report is presented in its entirety in Appendix H, 5.10.1 Affected Environment Background Noise is defined as unwanted sound. Sound becomes unwanted when it creates a nuisance that interferes with normal activities, or when it causes physical harm or otherwise adversely affects human health. The standard unit of measurement of the loudness of sound is the decibel (dBA). The zero point on the dBA scale is based on the lowest sound level that a healthy, unimpaired human ear can detect. Changes of 3 dBA or fewer would only be perceptible in laboratory environments. A 5 dBA increase would be readily noticeable. An increase of 10 dBA would be perceived as approximately a doubling of loudness. Numerous methods have been developed to measure sound over a period of time, including: Equivalent Sound Level (L,,,), Community Noise Equivalent Level (CNEL), Day/Night Average Sound Level (L,,,) and Maximum Noise event Noise level can vary pending on the noise source and duration. Below is description of Vie units of measure used in this analysis to describe the noise environment. • L,q: Time variations in noise exposure are typically expressed as a statistical description of the sound pressure level that is exceeded over some fraction of a given observation period (called L,,,). For example, the noise levels exceeded on 10 percent of readings is called 1-10, the median (50th percentile) reading is called L,,,r), etc, • CNEL: Because community receptors are more sensitive to unwanted noise intrusion during the evening and at night, state law requires that, for planning purposes, an artificial dB increment penalty be added to quiet- time noise levels in a 24-hour noise descriptor called CNEL. • L,j, Another commonly used method is the day/night average level or Ldn- The Ld, is a measure of the 24-hour average noise level at a given location. It was adopted by the US, Environmental Protection, Agency (EPA) for developing criteria for the evaluation of community noise exposure. • Lma,: The maximum noise level recorded during a noise event is typically expressed as Lffllx. Mid Basin Centennial Park roject Final EIR 5-144 A&1�49P Section 5 Effects of Noise Physical carnage to human hearing begins at prolonged exposure to noise Revels higher than 85 dBA. Extended periods of noise exposure above 90 dBA could result in permanent hearing damage. When the noise level reaches 120 dBA' a ticking sensation occurs in the human ear even with short-term exposure. This level of noise is called the threshold of feeling. As the sound reaches 140 dBA, the tickling sensation is replaced by the feeling of pain in the ear. This is called the threshold of pain. A sound level of 190 dBA will rupture the eardrum and permanently the inner ear. Table 32 summarizes typical noise sources, levels, and responses. Table 32'. Noise Levels and Human Response Nolte Sourte Noise Level d6A Response Library 30 Very gulet Refriqerator humming 40 Quiet Quiet office 50 Wet Normal oonversation 60 Vntrusive Vacuum cleaner 70 Telephone use difficult 'Frey ht train at 50 feet 80 Interferes with conversation Heavy-duty truck at 50 feet 90 Annoying Jet takeoff at 2,000 feet 100 Very annoyhg; hearing damage at sustained exposure levels Unmuffled motorcycle 110 Maximum vocal effect, physical discomfort Jet takeoff at 200 feet 120 Regular exposure over one minute risks permanent hearing loss Shotgun firm Q 130 Pain threshold I Carrier let operation 140 Harmfully loud ........ . ISMrce MOville C WvtOl and R. bale Beland, Existing Noise Environment The project site is located at Centennial Park and at the Heritage Museum, • The nearest sensitive receptor to MBI-2 would be Godinez High School located approximately 450 feet southeast of the proposed construction activities. Mid Basin Centennial Park �tej 6Project Final EIR 5-145 4 Section 5 a The nearest sensitive receptors to NISI -3 would be single-family homes located on the north side of Edinger Avenue approximately 210 feet from the proposed construction activities. • The nearest sensitive receptors to MBI-4 would be single-family and multi- family homes located on the north side of Edinger Avenue approximately 190 feet from the proposed construction activities and the Santa Ana College Centennial Education Center approximately 250 feet from the well construction activities. • The nearest sensitive receptors to MBI-5 are single-family homes located on the east side of Fairview Street approximately 220 feet from the proposed construction activities. • The nearest sensitive receptor to the Monitoring Well site would be Godinez High School located approximately 75 feet northwest of the proposed construction activities and the Heritage Museum site, To determine the existing noise environment within the project area, noise measurements were taken in the project area at four different locations and were then modeled to account for both mobile and stationary noise sources. The existing noise levels in the surrounding area are shown in Table 33. The existing noise levels within the project area and noise measurement receiver locations are shown in Figure 23. As shown in Table 33, there are several receivers within the project area that are experiencing elevated levels of existing noise that are in excess of the City of Santa Ana noise standards. Table 33: Existing Modeled Noise Levels Receiver Latid Use/location dBA ,CNEL dBA Leq Dq dBA Loq Evening dBA Leq 'Nli I Multi family home west Santa Ana River 434 41.8 397 34.6 2 Multi family home west Santa Ana River 63,5 61.9 598 54.5 3 Single family home north Edinger Avenue 671 65.6 63.4 58.1 4 Single family home Edinger Avenue 65.9 64.4 62.3 57.0 5 Single family home north Edinger Avenue 662 643 62.6 57.3 6 Single family home north Edinger Avenue 73.3 717 69.6 643 7 Single family home north Edinger Avenue 59.1 67.6 655 60,2 8 Multi family home north Edingier Avenue 67,8 66.2 641 58,9 9 North side Centennlal Education Center 61,0 10 Southeast Centennial Education Center 57.3 54.8 523 49.2 Mild Basin Centennial Park p Project Final EIR 5-146 Section 5 11 Single family home east Fairview Street 74.6 71.8 —F69 5 66.7 12 Single family home east Fairview Street 74.1 71.3 69.0 663 '13 Single family herne east Fairview Street 74.1 71.3 MO 66 3 14 Single farrniy home east Fairview Street 74.1 71.4 691 66.3 i is Northeast side Godinez High School 56.3 53.6 513 48.4 16 Northwest side Mitchell Learning Center 45,8 43,5 42.0 37.4 17 North Heritage MUSeLIM 50.8 48.1 45.8 42:9 18 Southeast Godinez High School 48.1 45.4 43.1 40,2 �19 7 Northwest Godinez High School 46.6 462 44,8 35.3 5A0,2 Regulatory Framework Federal Regulations The adverse impact of noise was officially recognized by the federal government in the Noise Control Act of 1972. The Occupational Safety and Health Administration (OSHA) agency prohibits exposure of workers to excessive sound levels. The Federal Aviation Administration (FAA) regulates noise of aircraft and airports. Surface transportation system noise is regulated by a host of agencies, including the Federal Transit Administration (FTA), Transit noise is regulated by the Federal Urban Mass Transit Administration (UMTA), while freeways that are part of the interstate highway system are regulated by the Federal Highway Administration (FHWA). The federal government actively advocates that local jurisdictions use their land use regulatory authority to arrange new development in such a way that "noise sensitive" uses are either prohibited from being sited adjacent to a, highway or, alternately that the developments are planned and constructed in such a manner that potential noise iimpacts are minimized. State Regulations California Department of Health Services Office of Noise Control The California Office of Noise Control has set the land use compatibility noise standards for different types of land uses and has encouraged local jurisdictions to adopt them. For residential development and schools, long term exterior noise levels ranging up to 60 dBA CNEL are classified as normally acceptable, based upon the assumption that the homes and schools are built with normal convention construction practices that provide adequate sound attenuation. Long term noise levels ranging up to 70 dB CNEL are conditionally acceptable and noise levels in the 70-75-dBA CNEL range are generally classified as unacceptable. Mid Basin Centennial Park �16� 2i46 Project Final EIR 5-147 klzl/ Section 5 Figure 23: Existing Project Area Noise Levels Mid Basin Centennial Park c pr p�Project Final EIR 5-148 Section 5 Local Regulations City of Santa Ana General Plan The following City of Santa Ana Genierall Plan Policies and Goals are relevant to the Proposed Project. Prevent significant increases in noise levels in the community and minimize the adverse effects of currently-existing noise sources. Require consideration of noise generation potential and susceptibility to noise impacts in the siting, design, and construction of new developments. • Require mitigating site and building design features, traffic circulation alternatives, insulation, and other noise prevention measures of those new developments which generate nigh noise levels. • Sound attenuate and /or buffer sensitive land uses such as housing from adverse noise impacts in noise-prone areas. • Minimize noise generation in residential neighborhoods through control or elimination of truck traffic and through-traffic from these areas. City of Santa Ana Municipal Code The City of Santa Ana Municipal Code establishes the following noise regulations that are relevant to the project. T11,p! 1��p 111 1 1�111111 MMUMM Noise tone Residential Nolse'level 55 dBA Time Pq 7:00 am — 10:00 pm Residential 50 dBA 10:00 pm to 7:00 am Table 35: City of Santa Ana Municipal Code Interior Noise Standards Noise Zone, Noise level Time Period Residential 55 dBA 7:00 am - 10'.00 pm Residential 45 dBA 10:00 pm to 7:00 am Special Provisions In accordance with the City of Santa Ana Noise Ordinance the following activities are be exempt from the day time and nigh time noise standards, (c) Activities conducted on any park or playground, provided such park or playground is owned and operated by a public entity, taw f Mid Basin Centenniat Park AeiI96 Project Final FIR 5-149 Section 5 (a) Noise sources associated with construction, repair, remodeling, or grading of any real property, provided said activities do not take place between the hours of 8:00 p.m. and 7:00 a.m. on weekdays, including Saturday, or at any time on Sunday or a Federal holiday. 5.10.3 Thresholds of Significance 1. Would the project expose persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, if applicable standards of other agencies? 2. Would the project result in a substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? 1 Would the project result in a permanent increase in ambient noise levels in the project vicinity above levels existing without the project? 4. Would the project expose persons to or generation of excessive groundborne vibration or groundborne noise levels? During the day operational noise would be subject to the City's interior and exterior noise standards. However, the City of Santa Ana Municipal Code, similar to most jurisdictions exempts construction noise from the indoor and outdoor noise standards if it occurs between 7:0,0 a.rn, and 8:00 p.m. Monday through Saturday, excluding holidays. During: the evening construction and operational noise Would be subject to the City's interior and exterior noise standards. As identified previously, there are several locations within the surrounding area where the existing noise levels are higher than the City's noise standard. The CEQA Guidelines do not define the levels at which a temporary increases in existing noise levels, are considered significant As discussed previously, a noise level increase of 3 dBA would be barely perceptible to the human ear, a 5 dBA increase would be readily noticeable and a difference of 10 dBA would be perceived as a doubling of loudness- To determine a potential significant noise impact when the existing noise level is higher than the noise standard, a 3 dBA increase over the existing noise level would be the threshold to determine a potential significant noise impact. In cases where the existing noise level is below the City's noise standard, the City's noise standard would be the threshold to determine a potential significant noise impact. 5.110.4 Environmental Consequences The proposed injection wells and monitoring well proposed in the Mid Basin Centennial Park Injection Well Project would be located in underground vaults. The operation of the injection wells and monitoring well would not emit any noise Mid Basin Centennial Park ll�geLkj Project Final EIR 5-150 '0111go Section 5 that would increase long term noise levels within the project area. The construction activities and periodic well redevelopment activities associated with the project would generate short term construction related noise impacts. The Proposed Project involves the following construction activities that would have the potential to generate short-term noise impacts. • Construction of the water supply pipeline. • Construction of the back flush pipeline • Construction of the two shared recreation/communication structures. • Centennial Skate Park Improvements. • Heritage Museum Site Improvements. • Paving of the Centennial Park Parking Lot • Construction of the injection wells at Centennial Park and the construction of the Heritage Museum. The noise analysis for the injection wells and monitoring well evaluates the different construction phases for each well. These construction phases include; construction and removal of sound walls, conductor casing installation, borehole drilling and reaming, well construction and well development, • Injection Welland Monitoring well redevelopment maintenance activities. Project Noise Reduction Design Features To minimize potential noise impacts the Proposed Project has incorporated the use of sound walls at each injection well site and construction phasing design features. Sound Walls The configuration of the sound walls is listed below and the locations are shown in Figure 24. Potential! construction Noise impacts generated from the project were analyzed with the following second wall configurations in place. • MBI-2 would have a 24-foot high temporary sound barrier on the northeast, southeast, and southwest sides of MBI-2 construction area. • MBI-3 would have a 24-foot high temporary sound barrier on the north, east and west sides of MBI-3 construction area. • MBI-4 would have a 24-foot high temporary sound barrier around the perimeter of MBIA construction area. • MBI-5 would have a 24-foot high temporary sound barrier around the perimeter of MBI-5 construction area. Mid Basin Centennial Park Project Final EIR Section 5 FIGURE 24: PROPOSED SOUND WALLS Mid Basin Centennial Park �jg,&AjProject Final EIR 5-152 Section 5 The Monitoring Well would have a 24-foot high temporary sound barrier around the perimeter of the Monitoring Weil construction area and would also have an 8-foot high sound blanket located on the north and east sides of the air compressor. Construction Phasing Design Features To further minimize noise impacts, the following design features would be incorporated into the construction activities for the Mid Basin Centennial Park Injection Well Project. • To minimize potential noise during the day when school would in session at Godinez High School, Mitchell Developmental School and Centennial Education Center, the construction of the water supply pipeline and back wash pipeline would occur at night. • The Heritage Museum site improvements would occur when school is not in session at Mitchell Development School and Godinez High School. • The construction of the monitoring well sound wall at the Heritage Museum would occur when school is not in session at Mitchell Development School and Godinez High School. • The construction of the MBI-5 Well sound wall would occur when school is not in session at Centennial Education Center and Godinez High School. • Paving activities at Centennial Park would be coordinated with Santa Ana Unified School District and Centennial Education Center to minimize noise impacts. • Well redevelopment maintenance activities for MBI-2, MBI-4 and the monitoring well would occur when school is not is session. The following analysis identifies the noise levels that would be generated from the construction activities for the Proposed Project and the Project Alternatives. Alternative 2: Proposed Project Phase I Construction Activities The Phase 1 construction activities includes construction of water supply pipeline along Edinger Avenue Bridge, construction of water supply pipeline along Edinger Avenue, construction of water supply and back flush pipeline and the construction two shared recreation/communication structures within Centennial Park and the Heritage Museum site improvements. To maintain circulation during the day along the Centennial Park Loop Road, the Proposed Project has incorporated a design feature that requires water supply pipeline and the back flush pipeiin:e within Centennial Park to be constructed at night. Mid Basin Centennial Park Project Final EIR 5-163 Section 5 Phase I Day Time Construction Activities The Phase 1 day time construction activities includes a worst case scenario that considers the day time construction of the water supply pipeline and back flush within Centennial Park along with all other Phase I construction activities. As shown in Table 36 the Phase 1 construction activities would exceed day time noise standard at Receivers 10, 16, 17, and 18, The noise level at receptor 10 would increase by less than 1 dB and would not be discernible. The construction activity having greatest influence on Receiver 10 would be the construction of water supplyYback flush pipeline along Centennial Loop Road, which would occur at night, which would reduce noise impacts near Receiver 10 during the day. The proposed site improvements (irrigation line reconstruction and grading for the interpretive kiosks) at the Heritage Museum would exceed the day time noise standard at Receiver 16, 17 and 18. All of the construction activity would occur within the allowable hours when the construction noise would be exempt under the City's Noise Ordinance. To minimize noise impacts near Godinez High School and near the Mitchell School, the project has incorporated a design feature that requires the Heritage Museum site improvements to occur when school would not be in session. Potential construction noise impacts would be less than significant. Table 36: Phase 1 Construction Day Time Noise Levels Rkpariver Description Existing Fxjstkng Increase (1) Noise I Construction 'Standard, Throh6ld I Multi Family west 41.8 46.8 5.0 55r6 Santa Ana River -6-4 2 Multi Family west 61.9 64 0 2 A 9 Santa Ana River 3 Single Family north 65,6 67.5 1.9 68.6 Edinger Ave. 4 Single Family north 64A 66.7 2.3 684 Edinger Ave. 5 Single Family north 647 67.3 2.6 67.7 Edinger Ave, 6 Single family north 71.7 71,8 0.1 74.7 Edinger Ave. 7 Single family north 67.6 677 01 70.6 Edinger Ave. 8 Multi Family north 66.2 66.4 0,2 692 Edinger Ave. 9 Centennial 59,5 602 01 62. n Mid Basin Centennial Park l28t-IA9 Project Final EIR 5-154 Section 5 Phase ? Night Time Construction Activities The noise levels generated from the construction of the water supply pipeline and back flush pipeline during the night within Centennial (Park are shown in Table 37. The construction activities would exceed the night time noise standard at Receiver 10, 15, and 19. All of the sensitive receptors are school facilities. The Construction activity would occur at night when the schools would not be in session. Because no sensitive receptors would be present, potential construction noise impacts would be less than significant. Table 37: Phase One Construction Activities Night Time Noise Levels Receiver Education Center�� Exlsitng ; ,Exiistnig+ AncreAse x(1)14 Iss' 10 Southeast 54,8 55.5 0.7 55.0 Centennial Throatiraiit; 1 Education Center 34.6 41.7 7.1 50 11 Single Family east 71.8 71.9 0.1 74.8 2 Fairview Street 54.5 54.6 0,3 57.5 12 Singie Family east 71.3 71.4 0.1 74.3 3 Fairview Street 58.1 58.7 0,6 61.1 13 Single Faimily east 71.3 71.4 0.1 74.3 Fairview Street 14 Single Family east 71.4 71.4 0.0 74.4 Fairview Street 15 North Godinez High 516 54.4 0.8 55.0 School 16 Northwest Mitchell 43.5 61.1 17.6 55.0 School 17 North Heritage 48.1 61.6 13.5 55.0 Museum Structure 18 South Godinez 43.3 58.1 14.8 55.0 High School 19 Northwest Godinez 44 ,2 51.5 5.3 55.0 High School 1 -City Noise s anderd Dr Ambient Noise level t! dE when Existing Nn,se Levels Above City Slanderd Bold =Exoaeds Noise Standard Thoeshnld Phase ? Night Time Construction Activities The noise levels generated from the construction of the water supply pipeline and back flush pipeline during the night within Centennial (Park are shown in Table 37. The construction activities would exceed the night time noise standard at Receiver 10, 15, and 19. All of the sensitive receptors are school facilities. The Construction activity would occur at night when the schools would not be in session. Because no sensitive receptors would be present, potential construction noise impacts would be less than significant. Table 37: Phase One Construction Activities Night Time Noise Levels Receiver Vesaripoput Exlsitng ; ,Exiistnig+ AncreAse x(1)14 Iss' Construction"�tatadar� , Throatiraiit; 1 Multi Family west 34.6 41.7 7.1 50 Santa Ana River 2 Multi Family west 54.5 54.6 0,3 57.5 Santa Ana River 3 Single Family north 58.1 58.7 0,6 61.1 Edinger Ave. Mid Basin Centennial Park ypm J 11 Project Final EIR 5 -15'5 Section 5 4 Single F-at-ri y_h nort_ 57.0 581 171--- 600 Edinger Ave. _60 _3 5 Single Family north 57.3 � 59 _0 1.7 Edinger Ave. 6 Single family north 64,3 -6-4-6 03 673 Edinger Ave 7 Single family north 602 CU 0.6 632 Edinger Ave. 8 Multi Family north 58.9 59.0 0.1 61 9 Edinger Ave. 9 North Centennial 52.1 53.9 1,8 55.1 Education Center 10 Sourtheast -Centennial 49.2 51.2 2.0 Sa Education Center I 11 Single Family east 66.7 i 66.8 0_1 693 Fairview Street 12 Single Family east 66.3 66.5 0.2 693 Fairview Street _� '13 Single Family east 66.3 _66.4 02 69.3 Fairview Street 14 Single Family east 663 66.4 0.1 69.3 Fairview Street Is I North Godinez High 48.4 50.6 2.2 so School Northwest Mitchell 374 39.4 2.0 SG School 17 North Heritage 42.9 44.5 1.13 50 Museum Structure 18 South Godinez High 38_.2 38.3 0.1 50 School 19 Northwest Godinez 35,3 56.2 14,9 so High School I -City Noise Slandard or A rinbient No is a I pr,W +N JB When Existiog Nuoso. Lev n Is Move 1,11y Slairdand Bold -Eueads Noise Standard Threshold Phase 2 Construction Activities The Phase 2 construction activities would include: Sound Wall Construction and Removal at l Conductor Casing Installation at l Borehole Drilling and Reaming at M81-5; and Well Construction at MBI-5. The sound wall construction and conductor casing installation would occur during the clay. The borehole drilling and reaming at MBI-5 and Well Construction at MBI-5 Would occur 24 hours per day- Since it is not possible for any of the above activities to occur simultaneouisly, each of the four construction activities associated with Phase 2 have been analyzed separately below. Mid Basin Centennial Park 28c6-ri2v Project Final EIR 5-156 Section 5 MBI-5 Sound Wall Installation The noise levels generated from the construction of the sound wall at M131-5 would range from a 0.1 dB increase to a 1.2 dB increase. As shown in Table 38 the construction activities would exceed the daytime time noise standard at Receiver 10 by .7 dB. The construction: of the sound wall would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. To minimize noise impacts at the Centennial Education Center, a design feature has been incorporated into the project that requires the construction of the MM-5 Well sound wall to occur when school is not in session. Potential noise impacts would be less than significant. Table 38: 1`11131-5 Sound Wall Construction Noise Levels Receiver Description Existing Existi increase > (1) Nolsq Constructib Standard n Thresthold I Multi Family west Santa 41.13 42.1 0.3 55.0 Ana River 2- Multi Family west Santa 61.9 62.0 0.1 64.9 Ana River Single Family north Edinger 656 65.6 D'O 686 Ave. 4 Single Family north Edinger 64.4 64.4 0.0 684 Ave. Single Family north Edinger 647 64.7 0.0 677 Ave. 6 Single family north Edinger 71.7 71.7 0.0 747 Ave. 7 Single family north Edinger 67.6 67.6 0.0 70.6 Ave. Multi Family north Edinger 66.2 66.2 0.0 69.2 Ave. 9 North Centennial Education 59.5 59,5 0.0 62.5 Center 10 Southeast Centennial 54.8 55.5 0.7 55.0 Education Center -1 Single Family east Fairview 71.8 713 0.0 4 L3 Street -12- Single Family east Fairview 71.3 71 74 Street 13 Single Family east Fairview 71.3 71.5 0.2 743 Street 14 Single Family east Fairview 714 71.4 0.0 74.4 Street 15 North Go-dinez High School 536 54.8 1.2 550 Mid Basin Centennial Park A Project Final EIR 5-157 k4z.) ce-1196 Section 5 7-61- Northwest Mitchell -School 43 5 416 0.1 55.c 17 North Heritage Museum Structure 481 487 0.6 55L) 18 South Godinez High School 43.3 43.4 V 55.0 19 Northwest Godinez High School 462 46.2 0.0 55.0 1-City No w oaiid a rd or An I hoffl Noise lmal 3 dH WhOo I rXiM 119 ri Lev P. I sAaooa City Standard Bold =Excaeds Nolso Standard Threshold MBI-5 Conductor Casing Installation With the construction of the sound walls, the installation of the conductor casing at ME31-5 would result in noise levels that would range from a -0,,2 dB decrease to a 0.1 dB increase. As shown in Table 39, the construction activity would not exceed the daytime noise standard, Additionally, the installation of the conductor casing would occur during the day when the construction activity would be exempt under the City's Noise Ordmance, Potential noise impacts would be less than significant. Table 39: l Conductor Casing Installation Noise Levels Receiver Description Existing Existing, + Increase (1) Noise ,Construction SIOPOONO Throshi 1 Multi Family west Santa 41 8 41.8 Dc 55.0 Ana River 2 Mulb Family west Santa 61,9 61.9 Oc 64.9 Ana River 3 Single Family north 65.6 65.6 0,10 66.6 Edinger Ave. 4 Single Family north 64.4 64.4 0,10 68.4 Edinger Ave. 5 Single Family north 547 64.7 0.0 67.7 Edinger Ave. 6 Single family north 71.7 71.7 0,() 74.7 Edinger Ave. 7 Single family north 67.6 67.6 0,0 70.6 Edinger Ave. 8 Multi Family north 66,2 66.2 &0 69.2 Edinger Ave. 9 North Centennial 59.5 59.5 0.0 62,5 Education Center -0 Southeast Centennial 54,8 54,7 -0.1 55.0 Education Center 11 Single Family east 71.8 71,8 0.0 74.8 Fairview Street Mid Basin Centennial Park X96-11MP reject Final EIR 5-158 Section 5 -12- Single F a _n*y east 71.3 71.4 0.1 743 Fairview Street C7onstructloh I - 13 Single Family east 71.3 71 4 0.1 743 Fairview Street 14 Single Family east 71,4 71-4 0'0 74.4 Fairview Street -5 North Godinez High 53.6 53.5 -O'l 55.0 School 16 Northwest Mitchell 43.5 43,5 0,0 55.0 School 17 North Heritage Museum 48.1 47,9 -0.2 55.0 Structure 18 South Godinez High 43,3 43.3 00 55.0 School 19 Northwest Godhez High 46.2 46.2 O'G 55.0 School I I 1-Cify Nei se Standard of Ambient Noose I evd 13 JB When En o,fg N (,,so bawls Above CILS I andaid Bold =Exceetls Noise SivirI Thrpehald All Borehole Drilling and Reaming To avoid borehole collapsing during construction, the borehole drilling and reaming activities would be required to occur 24 hours per day 7 days a week until completion. The duration of the drilling would be 8 days. Table 40 and Table 41 show the noise levels during the day and night when borehole drilling and reaming would be occurring. Table 40: 11 Borehole Drilling and Reaming Day Time Noise Levels Receiver Description III 1 9 1 tl ng, E$11sting, + Increase, Threshold C7onstructloh I - I Multi Family west Santa 41,8 41.9 0.1 55.0 Ana River Multi Family west Santa 61.9 61.9 0.0 64,9 Ana River 3 Single Family north 656 65.6 0.0 686 Edinger Ave. 4 Single Family north 64.4 64.4 U 67.4 Edinger Ave. 5 Single Family north 647 647 10.0 67.7 Edinger Ave 6 Single family -north 71.7 71.7 0.0 74,7 Edinger Ave 7 Single family north 67.6 67.6 0.0 716 Edinger Ave 8 Multi Family north Edinger 66.2 66.2 00 69.2 Ave. qro Mid Basin Centennial Park Alefidlb Project Final EIR 5-159 Section 5 9 North Centennial 59.5 59.E' 00 62.5 Education Center Cdinstr40110h 10 Southeast Centennial 54,5 548 0,0 55 Education Center 11 Single Family east 71.8 71,8 0,0 74,8 Fairview Street 12 Singe Family east 71,3 71.4 0,1 74.3 Fairview Street 13 Single Family east 711 71.4 IDA 74.3 Fairview Street 7-4 Single Family east 71.4 71.4 0.0 74.4 Fairview Street 2! 15 North Godinez High 53 53,8 0.2 55.0 School 16 Northwest Mitchell School 43.5 43.5 0.0 550 17 North Heritage Museum 48.1 48.0 -0.1 55.0 Structure is South Godinalz High 43,3 433 u 55.0 School 19 Northwest Godlnez High 46.2 46.2 0.0 55.0 Schooii 1--City N012E9 Standard or Ambient Noise IeveV +3 dB When Exisling Noise Levels Above tidy Slai-Aard Bold -Exceeds Noise Slanidard Threshold With the construction of the sound walls, the borehole drilling and reaming activities would result in noise levels that would range from a -0.1 dB decrease to a 01 dB increase. As shown in Table 40, the construction activity would not exceed the daytime noise standard. Additionally, the borehole drilling and reaming activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 41: MBI-5 Borehole Drilling and Reaming Night Time Noise Levels Ro"Iver Descrippqri Existing EKi sting + incripaso Throsh6lto Cdinstr40110h 1 Multi Family west 34,6 35.5 0r9 50 Santa Ana River 2 Multi Family west 54.5 54.5 0.0 57.5 Santa Aria River I Single Family north 58.1 58.9 0.0 60.1 Edinger Ave. 4 Single Famlly north 57.0 57.0 0'0 60.0 Edinger Ave. 5 Single Family north 57.9 57.3 60.3 Edinger Ave. 2! Mid Basin Centennial Park �Jgdngj Project Final EIR 5-160 Section 5 -C- Single family 7o -1 th -6-43- 64,3 0.0 673 Edinger Ave, 7 Single family north 60.2 60.2 6.0 63.2 Edinger, Ave. 8 Multi Family north 58.9 00 61.9 Edinger Ave. 9 North GentenniaV 52.1 52 1 0,0 551 Education Center 10 Southeast Centennial 49.2 50.0 0.8 52,2 Education Center 1 Single Family east 66.7 66.8 0 1 70.7 Fairview Street 12 Single Family east 663 664 0 6. -1 69.3 Fairview Street 13 Single Family east 663 66A 0. it -6-9-,3 Fairview Street 14 Single Family east 66.5 66.3 O'n 69.3 Fairview Street 15 North Godinez High 48.4 49.5 I'l 50.0 School 16 Northwest Mitchell 37.4 37.5 0'1 50,0 School 17 North Heritage 42.9 412 0.3 50.0 Museum Structure 18 South Godinez High - 38.L 38.2 O'n 500 School 19 Northwest Godinez 35.3 35.5 0,2 50.0 High School I-Chy Noi so Slandard ni Arihent Wolse, I eve 1 '3 00 "hen Exosli•g Noise LevoN Abcvo 00y standard Bold wEneeft Noise 9Eudard Threshold With the construction of the sound walls, the borehole drilling and reaming activities would result in noise levels that would range from a 0.1 dB increase to a 1.1 dB increase. As shown in Table 41, the construction activity would not exceed the night time noise standard. Potential noise impacts would! be less than significant. MBI-5 Well Construction The well construction activities would be required to occur 24 hours per day 7 days a week until completion. The duration of the well construction activities would be 3 days. Table 42 and Table 43 show the noise levels during the day and night when well construction would be occurring, Mid Basin Centennial Park Project Final EIR 5-1(131 Section 5 Table 42: IVIBI-5 Well Construction Day Time Noise Levels Receiver Description Existing Ea Isflllg + Increase Threshold Construction 1 Multi Family west Santa 41,8 41.9 0.1 55.0 Ana River 2 Multi Farrilly west Santa 61.9 61,9 0.0 649 Ana Rival 3 Single Family north 65.6 65,6 0.0 686 Edinger Ave. 4 Single Family north 64.4 6-44 DrO 67.4 Edinger Ave. 5 Single Family north 64.7 343 0.0 67.7 Edinger Ave. 6 Single family north 71.7 71.7 0.0 7'4.7 Edinger Ave. 7 Single family north 67.6 67.6 0.0 70.6 Edinger Ave. a Multi Family north 66.2 66.2 0 -0 -69.2, Edinger Ave. 9 North Centennial 59.5 59.5 0,0 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0.0 57,6 Education Center 111 Single Family east 71.8 7T 0.0 74.8 Fairview Street 12 Single Family east 71.3 - - 71,4 -0, 1 74.3 Fairview Street 13 Single Family east 71.3 71.5 0,2 74.3 Fairview Street 14 Single Family east 71.4 71 A 0.0 74.4 Fairview Street 15 North Godinez High 53.6 531 0.1 55.0 Schoci4 16 Northwest Mitchell 43.5 43,5 0,13 55.0 School 17 North Heritage Museum 48.1 47,9 -0.2 55.0 Structure 18 South Godinez High 433 433 0.0 55.0 School 19 Northwest Godinez High 46.2 46.2 0.0 55.0 School I IvCity Noise Standard orArnblert Noise level 0 0 when EX1511Pq Noise, Levels Above C i4y Slandard Hold = Exceeds N000 Stadd,d TilMS4101d With the construction of the sound walls, the well construction activities would result in noise levels that would range from a -0.2 dB decrease to a 0,1 dB increase. As shown in Table 42, the construction activity would not exceed the Mid Basin Centennial Park 1�t&&Yroject Final EIR 5-162 Section 5 daytime noise standard. Additionally, the well construction activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 43: MBI-5 Well Construction Night Time Noise Levels Receiver Description, Existing F-xistIng + increase Tfir shold Construction I Multi Family west Santa 34,16 35,3 07 50.0 Ana River 2 Multi Family west Santa 54.5 54.5 0,0 57.5 Ana River 3 Single Family north 58.1 58.1 0,0 61.1 Edinger Ave. 4 Single Family north 57.0 57.0 0.0 60.0 Edinger Ave. 5 Single Family north 57-3 57.3 10,10 603 Edinger Ave. 6 Single family north Edinger 64.3 64.3 0.0 1 Ave, 7 Single family north Edinger 601 60,8 0.0 612 Ave. a Multi Family north Edinger 58.9 58.9 0.0 61,9 Ave. 9 North Centennial 52,1 519 0.0 55.1 Education Center 10 Southeast Centennial 492 49.6 0.4 52.2 Education Center 11 Single Family east 667 66.8 01 7 7 Fairview Street 12 Single Family east, 363 66.3 0.0 69,3 Fairview Street EIGI. 13 Single Family east 61 66.8 0.5 )g 693 Faerview Street 14 Single Family east 66.3 66.3 0,0 693 Fairview Street 15 North Godinez High 48.4 49.2 0,8 50.0 School 16 Northwest Mitchell School 37.4 37.5 0.1 50.0 17 North Heritage Museum 42.9 42.9 0.0 50.0 structure 18 South Godinez High I 38.2 38.2 0.0 50,0 School 19 Northwest Godinez High 35.3 35.4 0.1 50,0 School I I Nnll 5�ori!,1111 11, An10111inI Nn ill IVII 13 MR VVh" I- l,,Cimg Njlqe Lmwrols Ah�,V* Gily Sold -Fueeds Nn,,e Sl,ndard rh,lshAd Mid Basin Centennial Park I ,I iA I Project Final EIR 5-163 �ed- Section 5 With the construction of the sound walls, the well construction activities would result in noise levels that would range from a O 1 dB increase to a 0 �8 dB increase. As shown in Table 43, the construction activity would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 3 Construction Activities The Phase 3 construction activities would include: Sound Wall Construction and Removal at MBI-3; Conductor Casing Installation at MBI-3; Borehole Drilling and Reaming at MBI-3; Well Construction at MBI-3; and Well Development at MBI-5. The sound wall construction and conductor casing installation would occur during the day. The borehole drilling and reaming, well construction and well development activities would occur 24 hours per day. Since well development at MBI-5 has the potential to occur simultaneously with the borehole drilling and reaming at MBII-3, it has been analyzed in combination with the borehole drilling and reaming at MBI-3. 114611-3 Sound Wall Construction The noise levels generated from the construction of the sound wall at MBI-3 would range from 0.1 dB increase to a 1.2 dB increase. As shown in Table 44, the construction activity would not exceed the day time noise standard. Additionally, the construction and removal of the sound walls would occur during the day when the construction activity Would be exeirript under the City's Ordinance, Potential noise impacts would be less than significant. Table 44: M1131-3 Sound Wall Construction Noise levels Rocolivor poscription Rxistirig Exisitirro + Increase (1► Nalse Threshold 1 Multi Family west Santa 41.8 410, 1.2 55,0 Ana River 2 Multi Family west Santa 61,9 620 0.1 649 Ana River 3 Single Family north 65.6 65.8 02 68.6 Edinger Ave, 4 Single Fancily north 64.4 65.2 0.8 68.4 68.4 Edinger Ave. 5 Single Family north 641 65,0 0.0 677 Edinger Ave. 6 Single family north 713 71.7 0.0 743 Edinger Ave, Single family north 67.6 67.6 0.0 70.6 Edinger Ave, 8 Multi Family north Edinger 66,2 66,2 1 0.0 1 69.2 Mid Basin Centennial Park 21-jeLQnjg1,1Project Final EIR 5-164 Section 5 iM BI -3 Conductor Casing Installation With the construction of the sound walls the installation of the conductor casing at M'BI -3 would result in noise levels that would range from a -0.1 dB decrease to a to 1.4 dB increase. As shown in Table 45, the construction activity would not exceed the day dime noise standard. The installation of the conductor casiing would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 45: MBI -3 Conductor Casing installation Noise Levels Ftecelver Ave. - - -- Extstln Exlsttng + InOoaaie (1) t^)clse 9 North Centennial 59-5 50.6 0.0 62,5 Education Center Threshold 10 Southeast Centennial 54.9 54.8 0.0 55.0 Education Center 11 Single Family east 71.8 71.8 0.0 74.8 Fairview Street 12 Single Family east 71.3 71,3 0.1 74.3 Fairview Street 13 Single Family east 71.3 71.3 0.2 74.3 Fairview Street 14 Single Family east 71.4 71 A U.0 74.4 Fairview Street 15 North Godinez High 516 53.6 1.2 55.0 School 16 Northwest Mitchell School 43.5 43.8 01 55.0 17 North Heritage Museum 48A 48.2 0.6 55.0 Structure 18 South Godinez High 43.3 43.3 0.1 55.0 School 19 Northwest Godinez High 46.2 46.9 0.7 55:0 School 1 =City Noise Stanlard or Amblenit Nose eve l +7 cis WWmen Exist!ng Ndse Levels Above City Standard Bold = Exceeds Noise Standard Thrashold iM BI -3 Conductor Casing Installation With the construction of the sound walls the installation of the conductor casing at M'BI -3 would result in noise levels that would range from a -0.1 dB decrease to a to 1.4 dB increase. As shown in Table 45, the construction activity would not exceed the day dime noise standard. The installation of the conductor casiing would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 45: MBI -3 Conductor Casing installation Noise Levels Ftecelver 'Description Extstln Exlsttng + InOoaaie (1) t^)clse i 60strulctian Stzlldard Threshold 1 Multi Family west 41.8 44.5 0.0 55.0 Santa Ana River 2 Mufti Family west 61.0 62.0 0.1 64.9 Santa Ana River 3 Single Family north 65.6 65.6 0.0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 U.0 68.4 Edinger Ave. Mid Basin Centennial Park ) cf,I,orw geroject Final EIR 5 -165 Section 5 MBI-3 Borehole Drilling/Reaming and MBI-5 Well Development The noise levels generated during concurrent borehole drilling at MBI-3 and well development at MBI-5 are shown in Table 46 and 47. The borehole drilling activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well devellopment of MBI-5 would be required to operate 12 to 24 hours a day to simulate well operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours. Mid Basin Centennial Park �Jg&njggProj ect Final EIR 5-166 Single Family north 641 64.8 0.1 373 Edina r Ave. 6 Single family north 71.7 71.7 0.0 747 Edinger Ave. - 7 Single family north 67.6 67.6 0.0 706 Edinger Ave. 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centennial 595 596 0'1 625 Education Center 10 Southeast Centennial 54.8 54.8 0.0 55.0 Education Center 11 Single Family east 71.8 71.8 0.0 748 Fairview Street 12 Single Family east 71.3 71.3 0,11 74.3 Fairview Street 13 Single Family east 71.3 71;3 0-1-74,3 Fairview Street 14 Single Family east 71 A 71.4 0.0 74.4 Fairview Street 15 North Godinez High 53.6 53,6 -0.1 55.0 School 16, Northwest Mitchell 43,5 44,2 0.7 56.0 School 17 North Heritage 48.1 483 0.2 56.0 Museum Structure 18 South Godinez High 413 43,3 0.0 55.0 School I 19, Northwest t Godinez 46.2 4T6 1.4 55.0 School h,,l --tL9h I =Cfty Nisise Stamjara Car Ambipin I Name IeveP Q dEiWhen Exist! iiq No! w, Lavois AlLove Dly &9ndatJ Sold =Exceeds Noise Slandard Threshold MBI-3 Borehole Drilling/Reaming and MBI-5 Well Development The noise levels generated during concurrent borehole drilling at MBI-3 and well development at MBI-5 are shown in Table 46 and 47. The borehole drilling activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well devellopment of MBI-5 would be required to operate 12 to 24 hours a day to simulate well operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours. Mid Basin Centennial Park �Jg&njggProj ect Final EIR 5-166 Section 5 Table 46: MBI-3 Borehole DrillinglRearning and M'BI-5 Well Development Day Time Noise Levels Receiver Description existing 'existing + Increase Threshold Constrodtion Multi Family west Santa 41.8 45.9 4.1 55.0 Ana River 2 Multi Family west Santa 61.9 62.0 0.1 64,9 Ana River 3 Single Family north 65.6 65.6 110 68.6 Edonger Ave. 4 Single Family north 64.4 64.6 0.2 67.6 1 Edinger Ave. 5 Single Family north 64.7 648 0.1 67.7 EdInqer Ave. 6 Single family north 711 71,7 0.0 74,7 Edirqer Ave, 7 Single family north 67,16 67.6 0,10 70,6 Ave. 8 _gqtger Multi Family north 662 66.2 0.0 69.2 - Edinger Ave. 9 North Centennial 59.6 59,7 02 62.5 Education Center 10 Southeast Centennial 548 55,0 02 55.0 Education Center 11 Single Family east 71.8 71.8 0.0 74.8 Fairview Street 12 Single Family east 74.3 71,6 0 3 74.3 Fairview Street 13 Single Family east 71.3 71.6 0.3 74.3 Fairview Street 14 Single Family east 71.4 71.4 0.0 74.4 Fairview Street 15 North Godinez High 53.6 543 U 55.0 School 16 Northwest Mitchell 43.5 44.9 1.4 55.0 School 17 North Heritage Museum 481 48,6 0.5 55,0 Structure 18 South Godinez High 433 434 V 55.0 school 19 Northwest Godmez 46.2 49,0 2.8 55,10 I High School -'City NOIS9 StOOdOld x Arnt:e,t Nmo II Q dB IN hen -.-KiSI Ing No inn L@Vols AWYFo CO, 91,nOand -E-Id =Eacee Is No seslanda'd With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 4.1 dB increase. As shown in Table 46, the construction activity would riot exceed the daytime noise standard. Additionally, the borehole drilling activities Would be conducted during the day when the construction activity would be exempt under Mid Basin Centennial Park 2 I 'ecu)n Well Proj ect Final FIR 5-167 -268 Section 5 the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 47: MBI -3 Borehole Drilling /Reaming and MIBI -5 Well Development Might Time Noise Levels Receiver: Description Existing Fixlstina + Increase Threshold Conistruatlon 1 Multi Family west Santa 34.6 44.4 9.8 50 Ana River 2 Muil'u Family west Santa 54.5 54.6 0.1 57.5 Ana River 3 Single Family north 58.1 58.3 0.2 62.1 Edinger Ave. 4 Single Family north 57.0 57.4 0.4 60.0 Edinger Ave. 5 Single Family north 57.3 57.4 0.1 603 Edinger Ave. 6 Single family north 64.3 64.3 0.0 67.3 Edinger Ave. 7 Single family north 602 60.2 010 612 Edinger Ave. 8 Multi Family north 58.9 58.9 0.0 61.9 Edinger Ave. 9 North Centennial 52.1 53.2 1:1 55.1 Education Center 10 Southeast Centennial 49.2, 49.2 D.4 50.17 Education Center 11 Single Family east 66.7 66.7 0.1 697 Fairview Street 12 Single Family east 66.3 66.6 0.3 69.3 Fairview Street 13 Single Family east 66,3 663 0.5 69.3 Fairview Street 14 Single Family east 66.3 66.3 0.0 69.3 Fairview Street 15 North Godinez High 48.4 48.5 0.1 50.0 School 16 Northwest Mitchell 37.4 j 41.5 4.1 50.0 School 17 North Heritage Museum 42.9 43.9 1.0 50.0 Structure 18 South Godinez High 38.2 38.3 0.1 50.D School 19 Northwest Godinez High 35.3 46.3 11.0 50.0 School 'I rely Ni $1andard nr Amdlr;nI Noise trivet d,S Wr on Exist irig Naive Levels AUava ( Ay Slaadaral aald =Exceeds Noise SGandsed Threshold n Mid Basin Centennial Park �Jednjg6Project Final EIR 5 -168 Section 5 With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to an 11.0 dB increase. As shown in Table 47, the construction activity would not exceed the night tirne noise standard. Potential noise impacts would be less than significant, MBI-3 Well Construction The well construction activities would be required to occur 24 hours per day 7 days a week until completion. The duration of the wel'l construction activities would be 3 days. Table 48 and Table 49 show the noise levels during the day and night when well construction would be occurring. Table 48; MIBI-3 Well Construction Day Time Noise Levels Receiver Description Existing F-xisting + Increase Threshold Construction 1 Multi Family west Santa 413 46.0 4,2 55.0 Ana River 2 Multi Family west Santa 61.9 62.0 OA 64.9 Ana River 3 Single Family north 65.6 65,15 01.0 686 I Edinger Ave. 4 Single Family north 64.4 64.6 02 67,6 Edinger Ave, 5 Single Family north 64.7 64,8 0.1 67.7 Edinger Ave. 6 Single family north 71.7 71,7 m 74.7 Edinger Ave. 7 Single family north 676 67.6 U 70.6 Edinger Ave. 8 Muld Family north 66.2 6-6-2 0.0 691 Edinger Ave. 9 North Centennial 59.5 5947 0.2 62-5 Education Center -0 Southeast Centennial 54,8 5418 0.0 55,0 Education Center 11 Single Family east 71.8 71.8 M 7448 Fairview Street 12 Sirrgie Family east 71.3 71- _6 0.0 74.3 Fairview Street 13 Single Family east 71.3 71.6 0.0 74.'.3 Fairview Street 14 Single Family east 71 A 71.4 GrU 74.4 Fairview Street 15 North Godinez High 53.6 516 0,0 55.0 school 16 Northwest Mitchell 43.5 44.6 1.1 55,0 Mid Basin Centennial Park �Vp;'Qn,�jyroject Final Elks 5 -169 Section 5 With the construction of the sound walls, the well construction activities would result in noise levels that would range from a 0.1 dB increase to a 4.2 dB increase. As shown in Table 48, the well construction activity would not exceed the daytime noise standard. Additionally, the well construction activities would be conducted during the day when the construction activity would be exempt under the City's Ordinance. Potential noise impacts would be less than significant. Table 49: MBI-3 Well Construction Night Time Noise Levels Receiver School Existing i Existing* lo&ease Tbreshold 17 North Heritage Museum 48.1 - 48.4 0 3 55.0 1 Structure 346 444 7 9.8 50.0 18 South Godinez High 43.3 43.3 01 55,0 2 School 545 54.6 01 57.5 19 Northwest Godinez 462 48.4 -7 2.2 5-0 3 High School 58.1 58.2 0.1 61.1 I -City Noise. Standard m AiTibien I Naqse 06401 +3 0B When ExiOing Noise Lovds Above City Stan Jad Bald =Exceuds Noise Standard nireshold With the construction of the sound walls, the well construction activities would result in noise levels that would range from a 0.1 dB increase to a 4.2 dB increase. As shown in Table 48, the well construction activity would not exceed the daytime noise standard. Additionally, the well construction activities would be conducted during the day when the construction activity would be exempt under the City's Ordinance. Potential noise impacts would be less than significant. Table 49: MBI-3 Well Construction Night Time Noise Levels Receiver Description Existing i Existing* lo&ease Tbreshold Construction 1 Multi Family west Santa 346 444 7 9.8 50.0 Ana River 2 Multi Family west Santa 545 54.6 01 57.5 Ana River 3 Single Family north 58.1 58.2 0.1 61.1 Edinger Ave. 4 Single Family north 57.0 57,3 0.3 60.0 Edinger Ave. 5 Single Family north 57.3 57.4 0.1 60.3 Edinger Ave. 6 Single family north 6-4.3 64.3 0.0 67.3 Edinger Ave. 7 Single family -north-6O -2 60.2 0.0 63,2 Edinger Ave. 8 Multi Family north 58.9 58.9 0.0 61.9 Edinger Ave. - 9 North Centennial 52A 53,10 0.9 75 -, Education Center 10 Southeast-Centenmal 49.2 49,2 0,0 -522 Education Center 11 Single Family east 66.7 66.7 0.0 70,7 Fairview Street 12 Single Family east 66.3 66,3 0.0 69.3 Fairview Street ..13 Single Family east -J-66-3-1 66 3 0.0 693 Mid Basin Centennial Park �jgdn, till Project Final EIR 5-170 1 Section 5 With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0, 1 dB increase to a 9.8 dB increase. As shown in Table 49, the construction activity would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 4 Construction Activities Phase 4 construction activities would include: Sound Panel Construction and Removal at M!31-2; Conductor Casing Installation at MBI-2; Borehole Drilling and Reaming at MBI-2; Well Construction at MBI-2, and Well Development at MBI-3. Since well development at MBI-3 has the potential to occur simultaneously with the borehole drilling and reamilng at MBI-2, it has been analyzed in combination with the borehole drilling and reaming at MBI-2, MBI-2 Sound Wall Construction The noise levels increases generated from the construction of the sound wall at MBI-2 would range from 0.1 dB increase to an 87 dB increase. As shown in Table 50, the construction activity would not exceed the City's day time noise standard. Additionally, the construction and removal of the sound walls would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Mid Basin Centennial Park k"LO 8'62 Project Final EIR 5-171 2v�� Fairview Street 14 Single Family east 66.3 -6-673— 0.0 693 Fairview Street 15 North Godinez High 484 48.4 0.0 50 O School 16 Northwest Mitchell 37,4 40,8 3A 50 _0 School 17 North Heritage MUSEUru 42.9 43.8 0,9 WO Structure is South Godinez High 38.2 38.3 01 50.0 School 19 Northwest Godinez 35,3 45,0 9.7 50.0 High School I I I =Cliy Noise S fir.indard or ArnbieM Noise lo"I ,3 dS when Exislmg Noise Levels Above Citg Slandar.1 Bold =Fxc ads Nnlse Standard d Threshold With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0, 1 dB increase to a 9.8 dB increase. As shown in Table 49, the construction activity would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 4 Construction Activities Phase 4 construction activities would include: Sound Panel Construction and Removal at M!31-2; Conductor Casing Installation at MBI-2; Borehole Drilling and Reaming at MBI-2; Well Construction at MBI-2, and Well Development at MBI-3. Since well development at MBI-3 has the potential to occur simultaneously with the borehole drilling and reamilng at MBI-2, it has been analyzed in combination with the borehole drilling and reaming at MBI-2, MBI-2 Sound Wall Construction The noise levels increases generated from the construction of the sound wall at MBI-2 would range from 0.1 dB increase to an 87 dB increase. As shown in Table 50, the construction activity would not exceed the City's day time noise standard. Additionally, the construction and removal of the sound walls would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Mid Basin Centennial Park k"LO 8'62 Project Final EIR 5-171 2v�� Section 5 Table 50: IVIBI-2 Sound Wall Construction Noise levels Receiver Description Existing Existing + Increase X17 Noise Construction Standard Threshold I Multi Family west 41.8 50.2 8A 55.0 Santa Ana River 2 Multi Family west 61 9 62.0 D 1 64.9 Santa Aria River 3 Single Family north 656 651 0.1 68,6 Edinger Ave. 4 Single Family north 64.4 647 03 68.4 Edinger Ave. 5 Single Family north 64.7 64.8 0,11 67.7 Edinger Ave. 6 Single family north 71.7 711 0.0 74.7 Edinger Ave. 7 Single family north 67.6 67.6 0.0 70.6 Edinger Ave, 8 Multi Family north 66.2 66.2 U 69.2 Edinger Ave. 9 North Centennial 59.5 59.9 0.4 62.5 Education Center 10 Southeast Centennial 54.8 54.9 Orl 55.0 Education Center 11 Single Family east 71.8 71.8 0.0 743 Fairview Street 12 Single Family east 71.3 71.3 0.1 74.3 Fairview Street -T4 -3 13 Single Family east 71.3 71 02 Fairview Street 14 Single Family east 71.4 71.4 OrO 74,4 Fairview Street 15 North Godmez High 516 53.6 12 55.0 School 1� Northwest Mitchell 43.5 47.0 3.5 55.0 School 17 North Heritage 48.1 48.9 0,8 55.0 Museum Structure is South Godinez High 43.3 43.4 O'l 55,0 School 19 Northwest Godinez 462 54.9 8.7 55.0 High School I -City Now Stafid,10 ar Ambiw I NO, 90 10,al 13 d0 Whom Exisfinq NO, $G Lev,16 Above City Slandard Bold =Exceeds Noise Standard Threshold Mid Basin Centennial Park �f&efjProi Final EIR 5-172 Section 5 MBI-2 Conductor Casing Installation With the construction of the sound wails, the installation of the conductor Casing at M131-2 would result in noise levels that would range from a 0.1 dB increase to a 1.8 dB increase. As shown in Table 51, the installation of the conductor casing would not exceed the day time noise standard. Additionally, the installation of the conductor casing would occur during the day and when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 51: MBI-2 Conductor Casing Installation Noise Levels Receiver Description Existing Existing 'r Increase (1) Noise construction $tandaiid Threshold 1 Wb Family west Santa 41.8 43.6 1.13 55.0 Ana River 2 Mulh Family west Santa 61.9 610 01 64,9 Ana River 3 Single Family north 65.6 65 6 9.0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 68.4 Edinger Ave. 5 Single F-ar:�-Iy-nar-th--64 -7 64.7 0.1 67.7 Edinger Ave, 1 6 Single family north 71.7 71.7 0.0 74.7 Edinger Ave, 7 Single family north 67.6 67.6 0.0 70.6 Edinger Ave 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centennial 55579 -5 0.0 625 Education Center 10 Southeast Centennial 54.8 54.8 0.0 55r0 Education Center 11 Single Family east 71.8 71.8 0,0 74.8 Fairview Street 12 Single Family east 71.3 71.3 0.0 743 Fairview Street 13 Single Family east 71.3 T1.3 0.0 74.3 Fairview Street 7-4 Single Family east 71.4 71.4 0 0 74.4 Fairview Street North Godinez High 53.6 53.6 0 0 550 School Northwest Mitchell 435 416 0.1 55.0 School Mid Bastin Centennial Parkjcyynll4Project Final EIR 5-173 Section 5 17 North Heritage Museum 48.1 48 1 0.2 55.0 Structure is South Gcdinez High 43.3 43.3 0.0 School 7-9 Northwest -Godinez High -46.2 -46.8 0,6 55.0 School I 70ty Noise Standard or A rnblent Nalsp IeveB A r1B Wripin Existing Nnike I.revets Above City Standard B.1d -E.cer,ds Noop Standwd Thro&huld MBI-2 Borehole DrillinglReaming and MBI-3 Well Development The noise levels generated during concurrent borehole drilling at MBI-2 and well development at M131-3 are shown in Table 52 and Table 53. The borehole drilling activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of M131-5 would be required to operate 12 to 24 hours a day to simulate well operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours. Table 52: MBI-2 Borehole Drilling and MBI-3 Well Development Day Time Noise Levels 'Receiver Description Extatirig Ex'W410 + Increase ^ Threshold Constroction 1 Multi Family west Santa 41,8 60.6 8.8 55.0 Ana River 2 Multi Family west Santa 61.9 62,1 02 84.9 Ana River 3 Single Family north 65.6 65.7 0 1 68.6 Edinger Ave, 4 Single Family north 64.4 64.7 0,3 67.4 Edinger Ave. 5 Single Family north 643 64.8 0,11 67.7 Edinger Ave. 6 Single family north 713 71.7 On 74.7 Edinger Ave. 7 Single family north 67.6 67.6 0,0 70.6 Edinger Ave, 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centennial 59.5 59.9 0.4 62.5 Education Center 10 Southeast Centennial 54.8 54.8 M 55.0 Education Center 11 Single Family east 71,8 71.8 0.0 74.8 Fairview Street 12 Single Family east 71.3 71.3 0,0 74.3 Mid Basin Centennial Park Jjg3dnj " Project Final EIR 5-174 Section 5 With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0,1 dB increase to an 8.8 dB increase. As shown in Table 52, the construction activity would not exceed the daytime noise standard. Addltionallly, the borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's poise Ordinance. Potential) noise impacts would be less than significant. Table 53: MBI -2 Borehole Drilling and MBI -3 Well Development Night Time Noise Impacts Receivor: Fairview Street Existing Existing t Increase Threshold " 13 Single Family east 71.3 71.3 0.0 74.4 1 Fairview Street 34.6 44.7 101 50.0 14 Single Family east 71.4 71.4 0.0 74.4 - 2 Fairview Street 54,5 54.9 0.4 57.5 15 North Godinez_ High 53.6 536 0.0 55.07 3 School 58.1 58.4 0.3 60.1 16 Northwest Mitchell 43.5 47.0 3.5 55.6 4 School 57.0 57.3 0.3 60.0 17 North Heritage Museum 481 48.9 0.8 55.4 5 Structure 57.3 57.5 0.2 59.3 18 South Godinez High 43.3 43.4 01 55.0 6 School 64.3 643 0.0 65.3 19 Northwest Godinez High 46.2 52.7 IT 5 55.0 7 School 60.2 66.2 0.0 622 9 City Noise Standard at r4lbmt Nais'a level 13 dIB WJhers Existing Nbise ILnvcls Ab000 City 5landard Hold =Excerds Noise Ftondald Threshed With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0,1 dB increase to an 8.8 dB increase. As shown in Table 52, the construction activity would not exceed the daytime noise standard. Addltionallly, the borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's poise Ordinance. Potential) noise impacts would be less than significant. Table 53: MBI -2 Borehole Drilling and MBI -3 Well Development Night Time Noise Impacts Receivor: 06spription Existing Existing t Increase Threshold " Uhstwttlonr 1 Multi Family west Santa 34.6 44.7 101 50.0 Ana River 2 Multi Family west Santa 54,5 54.9 0.4 57.5 Ana River 3 Single Family north 58.1 58.4 0.3 60.1 Edinger Ave. 4 Single Family north 57.0 57.3 0.3 60.0 Edinger Ave. 5 Single Family north 57.3 57.5 0.2 59.3 Edinger Ave. 6 Single family north 64.3 643 0.0 65.3 Edinger Ave. 7 Single family north 60.2 66.2 0.0 622 Edinger Ave. 8 Multi Family north 66.9 56.9 0.0 00.9 � , Mid Basin Centenniall Park 2vcAntteroject Final Ell 5 -175 Section 5 With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 10.1 dB increase, As shown in Table 53 the well borehole drilling activities would not exceed the night time noise standard. Potential noise impacts would be less than significant, l Well Construction The well construction activities would be required to occur 24 hours per day 7 days a week until! completion. The duration of the well construction activities would be 3 days, Table 54 and Table 55 show the noise levels during the day and night when welt construction would be occurring. Mid Basin Centennial Park �t,&JjF�Project Final EIR 5-176 Edinger Ave. 9 --�-2A North Centennial 52 1 ID 56.1 Education Center 10 Southeast Centennial 49.2 49 3 OA 510 Education Center 11 Single Family east 66.7 667 0,0 67 7 Fairview Street 12 Single Family east 663 66,3 00 67 3 Fairview Street 13 Single Family east 663 66.3 0,0 673 Fairview Street 14 Single Family east 66,3 66.3 OL 67.3 Fairview Street 15 North Godinez High 48.4 48.4 0.0 50.0 SchooB 16 Northwest Mitchell 37.4 38,9 1.5 50,0 School 17 North Heritage Museum -2- 42.9 43.1 02 50.0 Structure 18 South Godinez High 38,.2 382 0,0 50.0 School 19 Northwest Godinez High 35.3 43.6 8,3 50.0 School I I I 1 UVNO,,L, SwIdardwAmbawl Nose lesvel +3 dB When ExisfinqNoise LevefeAbnva City Standard Bold = Exceeds Noise Standard Thore3hQjd With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 10.1 dB increase, As shown in Table 53 the well borehole drilling activities would not exceed the night time noise standard. Potential noise impacts would be less than significant, l Well Construction The well construction activities would be required to occur 24 hours per day 7 days a week until! completion. The duration of the well construction activities would be 3 days, Table 54 and Table 55 show the noise levels during the day and night when welt construction would be occurring. Mid Basin Centennial Park �t,&JjF�Project Final EIR 5-176 Section 5 Table 54. ll Well Construction Day Time Noise Levels Receiver Description Existing,' Existing+ Increase Threshold Construction 1 Multi Family west Santa 41.8 451 3.3 55.0 Ana (River 2 Multi Family west Santa 61.9 62.0 0.1 64.9 Ana Diver 3 Single Family north 65.6 65.6 0.0 69.6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 67.4 Edinger Ave. 5 Single Family north 64.7 64.8 - 0.1 671 Edinger Ave. 6 Single family north 71.7 71.7 0.0 74.7 Edinger Ave. 7 Single family north 67.6 67.6 0.0 706 Edinger Ave. 8 Multi Family north 66.2 66.2 0.0 6942 Edinger Ave. 9 North Centennial 59.5 59.5 0.0 6245 Education Center 10 Southeast Centennial 54,8 54.8 0,0 55.0 Education Center 11 Singie Family east 71.8 71.8 0.0 74.8 Fairview Street 12 Single Family east 71.3 71.3 0.0 74.3 Fairview Street 13 Single Family east 71.3 71.3 0.0 74.3 Fairview Street 14 Single Family east 71,4 71.4 0.0 74.4 Fairview Street 15 North Godinez High 516 516 0.0 55.0 School 16 Northwest Mitchell School 43.5 43.6 0.1 55.0 17 North Heritage Museum 481 48.1 0.0 55.0 Structure 18 South Godlnez High 43.3 43.3 0.0 55.0 School 19 Northwest Goddnez High 462 47.1 0.9 55.0 School '4= CCXty Noise standard or ,Ambient Noise P.vPI +3 da When Existing; Noise Levels Above Cily Standard Bold - Exceeds Noise Siondned Threshold With the construction of the sound walls, the well construction activities would result in noise levels that would range from a 0.1 dB increase to a 3.3 dB increase, As shown in Table 54, the well construction activity would not exceed the daytime noise standard. Additionally, the well construction activities would be Mid Basin Centennial Park J�itc� &&Project Final EIR 5 -177 Section 5 conducted during the day when the construction activity would be exerniat under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 55: IVIBI-2 Well Construction Night Time Noise Levels Receiver Description Existing Existing + increase 'Threshold Construction, 1 Multi Family west Santa 34.6 42,9 83 50.0 Ana River 2 Mufti Family west Santa 545 54.8 0.3 57,5 Ana River Single Family north 58.1 58.3 0,2 61.1 Edinger Ave. 4 Single Family north 57,0 57.2 0.2 60.0 Edinger Ave. 5 Single Family north 573 57.4 01 603 Edinger Ave. 6 Single family north 64,3 64.3 0.0 67.3 Edinger Ave. 7 Single family north 60.2 60.2 0.0 512 Edinger Ave. a Multi Family north 58.9 58.9 0.0 61 9 Edinger Ave. 9 North Centennial 521 521 0.0 55.1 Education Center 10 Southeast Centennial 49.2 49.3 0.1 50.0 Education Center 11 Single Family east 66.7 66.7 0.0 69.7 Fairview Street 12 Single Family east 66.3 66.3 0.0 6-93 Fairview Street 13 Single Family east 663 66 3 0.0 69.3 Fairview Street 14 Single Family east 66.3 663 0.0 69.3 Fairview Street 15 North Godmez High 48.4 48.4 0.0 50,0 School 16 Northwest Mitchell 37.4 37.7 0.3 50.0 School 17 North Heritage Museum 42,9 410 7.1 50.0 Structure 18 South Godinez High 38.2 38.2 0.0 50.0 School 19 Northwest Godinez High 35.3 40,8 5.5 500 School -T ( Y wL-11jm" Mb.nt d N�,.. ., �3 dBWNm, ErisNngy Noise LeM,A�,� City Standard Bold =ExceHds Nme Sumard WesliDij 1k, I �3 ) Mid Basin Centennial Park In' WV611Pr,',ct Final EIR 5-178 2'9622' Section 5 With the construction of the sound walls the well construction activities Would result in noise levels that would range from a 0,1 d6 increase to an 8.3 dB increase. As shown in Table 55, the construction activity would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 5 Construction Activities The Phase 5 construction activities would include: Sound Wall Construction and Removal at MBl-4; Conductor Casing Installation at MBI-4; Borehole Drilling and Reaming at MBI-4; Well Construction at MBI-4; and Well Development at MBI-2. Since well development at MBI-2 has the potential to occur simultaneously with the borehole drilling and reaming at MBI-4, it has been analyzed in combination with the borehole drilling and reaming at MBI-4, MBI-4 Sound Wall Construction The noise levels generated from the construction of the Sound wall at M61-4 would range from a 0.1 dB increase to 1.5 dB increase. As shown in Table 56, the sound wall construction would not exceed the City's day time noise standard. Additionally, the construction of the sound wall would occur during the day when the construction activity would be exempt under the City's Noise Ordinance, Potential noise impacts would be less than significant. Table 56: MBI-4 Sound Wall Construction Noise Levels Receiver Description Existing Existing + Increase 11 l Noise Con , struction Standard threshold 1 Multi Family west Santa 41,8 52.2 0.4 55.0 Ana River 2 Multi Family west Santa 61.9 62.0 01 64.9 Ana River 3 Single Family north 65.6 65.6 0,0 68.6 - 4 -tqLEL!Ave. Single Family north - 64.4 64.4 0.0 68.4 Edinger Ave._ 5 Single Family north 647 64.8 0.1 67.7 Edinger Ave. - 6 Single family north 713 71.8 0.1 747 1 Edinger Ave. 7 Single family north 67.6 67.9 0.3 70.6 Edilnger Ave. 8 Multi Family north 62 63 �� 1 �2 Edinger Ave. 9 North Centennial --59-,5 61.0 1 5 625 Education Center 10 Southeast Centennial --- 54.8 54.8 0.1 Education Center 11 Single Family east 71,8 71.8 00 Fairview Street I Mid Basin Centennial Park��cko1196Project Final EIR 5-179 Section 5 12 Bungle Family east 71.3 71.3 0.1 74.3 Fairview Street iCorMstriuction Standard 13 Single Family east 71.3 71.3 0.2 74.3 1 Fairview Street 41.8 41.8 0.0 55.0 14 Single Family east 71.4 71.4 _ 0.0 74.4 2 Fairview Street 61.9 62.0 0.1 64.9 15 North Godinez High 53.6 53.6 1.2 5.5.0 3 School 65.6 65.6 0.0 68.6 is Northwest Mitchell 43.5 43.6 0.1 55.0 4 School 64.4 64.4 0.0 67.4 17 North Heritage Museum 48.1 48.2 01 55.0 5 Structure 64.7 64.7 0,0 67.7 18 South Godlnez High 43.3 43.3 0.0 55.0 6 School 717 71.8 CA 74.7 19 Northwest Godinez 48.2 46.2 0.0 55.0 7 Hi h Schaal 67.6 67.7 0.1 70.6 Cry Noise'9taroafd of Aynhiant Noise lewal -3 dB when Exusding Nuke Levels Above City standard Bold = Exceed& Noise 5tanclwd Thraghoid lb1i Conductor Casing installation With the construction of the sound walls, the installation of the conductor casing at M13I -4 would result in noise levels that would range from a -0.7 dB decrease to a 0.1 dB increase. As shown in Table 57, the installation of the conductor casing would not exceed the City's day time noise standard. Additionally, the installation of the conductor casing would occur during the day when the constructiion activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 57: MBI-4 Conductor Casing Installation) Noise Levels Receiver Description Existing Existing+ Increase (1) Noise iCorMstriuction Standard Threshold 1 Multi Family west Santa 41.8 41.8 0.0 55.0 Ana River 2 Multi Family west Santa 61.9 62.0 0.1 64.9 Aria River 3 Single Family north 65.6 65.6 0.0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 67.4 Edinger Ave. 5 Single Family north 64.7 64.7 0,0 67.7 Edinger Ave. 6 Single family north 717 71.8 CA 74.7 Edinger Ave. 7 Single family north 67.6 67.7 0.1 70.6 Edinger Ave. Mid Basin Centennial Park I JAcdon��IllProject Final EIR 5 -'180 Section 5 8 1 amily north €i6.2 66.3 OA 69.2 Edinger Ave. ":dtistinuction -6 North Centennial 59,5 58.8 -0.7 62.5 Education Center 10 Southeast Centennial 54.8 54,8 0.0 55.0 Erl Center 11 Single Family east 71.8 71,8 O'D 74.6 Fairview Street 12 Single Family east 7113 71,3 00 74.3 Fairview Street 13 Single Family east 71 3 71.3 0.0 74,3 Fairview Street 14 Single Family east 714 71.4 0.0 74.4 Fairview Street 15 North Godinez High - 53.6 516 0,0 55.0 School 16 Northwest Mitchell 43.5 43.5 D'O 55,0 School 17 North Heritage Museum 48.1 451 0.0 55.0 Structure 18 South Godinez High 43.-3 433 0.0 55.0 School 19 Northwest Godinez High 46.2 46.2 o 0 55.0 School I-C it V Make Standairld or Ambient Noise level 1 +3 :16 WheTi Exist in Lj Noise leave Is. A ituve City &andofd Bold mE.oeeds Ncnsa 9rviidard I hrshold MB14 Borehole Driffing✓Reaming and MBI-2 Well Development The noise levels generated during concurrent borehole drilling at MB-4 and well development at M'BI-2 are shown in Table 58 and Table 59. The borehole drilling activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of MBI-2 would be required to operate 12 to 24 hours a day to simulate well operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours. Table 58: MBI-4 Borehole Drilling and MBI-2 Well Development Day Time Noise Levels 'Aacelver Description ExIsti 9XISOJI incree11I Throill ":dtistinuction 1 Multi Family west 41.8 488 7.0 55.0 Santa Ana River 2 Multi Family west 61.9 621 1 64.9 Santa Ana River 3 Single Family north 1_65-Z 65.7 0.1 1 65,6 Mid rig�Project Final EIR 5-181 Basin Centennial Park ��q&_ Section 5 With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a TO dB increase. As shown in Table 58, the construction activity would not exceed the daytime noise standard. Additionally, the borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Mid Basin Centennial Park I tect')n 283 Well project Final EIR 5-182 - Edinger Ave 4 Single Family north- 64.4 64.5 0.1 - 67.4 Edinger Ave. 5 Single Family north 647 649 0.2 767.7 Edinger Ave. 16 Single family north 717 71.8 01 74.7 Edinger Ave. 7 Single family north N 67.6 67.8 02 706 Edinger Ave. 8 Multi Family north 66,2 663 0.1 7-9 -2 Edinger Ave. 9 North Cantenniai 59.5 59,2 -03 1 62.5 Education Center 10 Southeast Centennial 54,8 54.8 0.0 550 Education Center 11 Single Family east 71,8 71 8 0.0 748 Fairview Street 12 Stogie Family east 71.3 71.3 0.0 74,8 Fairview Street 7-3 Single Family east 71,3 71.3 00 74.8 Fairview Street 1-4 Single Family east 71.4 71.4 0.0 74.4 Fairview Street 15 North Godinez High 5,16 53,6 0,0 55.0 School 16 Northwest Mitchell 435 440 0,5 55.0 School 17 North Heritage 48.1 48,2 0.1 55.0 Museum Structure 18 South Godinez High 43.3 43.3 D'O 550 School 9 Northwest Godinez 46.2 48.8 2.6 55,0 High School I =C ty Noise Standard or At tr b! on I NDt so Jo el +-3' d D W hen E x i sfing Noise Loamy; Above City S,t an dafd H.Id =E.G..ds N.,S, sttwiaA ThrkshDId With the construction of the sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a TO dB increase. As shown in Table 58, the construction activity would not exceed the daytime noise standard. Additionally, the borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Mid Basin Centennial Park I tect')n 283 Well project Final EIR 5-182 - Section 5 Table 59: MBI-4 Borehole Drilling and MBI-2 Well Development Night Time Noise levels Receiver Description Existing Existing + increase Threshold Construction I Multi Family west Santa 34.6 399 5.3 50r0 Ana River 2 Multi Family west Santa 54+5 54 7 0.2 57 5 Ana River 3 Single Family north 58.1 58.2 0.1 61.1 Edinger Ave, 4 Single Family north 57.0 57.2 0.2 60,0 Edinger Ave. 5 Single Family north 57.3 57 033- 60.3 Edinger Ave. 6 Single family north 643 64.4 OA 67.3 Edinger Ave. 7 Single family north 60.2 60.7 0.5 63.2 Edinger Ave, 8 Multi Family north 58.9 590 0.1 61.9 Edinger Ave. 9 North Centennial 52.1 53.7 1.6 55.1 Education Center 10 Souffileast Centennial 49,2 493 0.1 50.0 Education Center 11 Single Family east 561 66.7 D.O Fairview Street 12 Single Family east 66.3 66.3 0,0 69,3 Fairview Street 13 Single Family east 66.3 66.3 0.0 693 Fairview Street 14 Single Family east 66.3 66.3 0.0 69.3 Fairview Street 15 North Godinez High 48.4 4a,4 0'() 500 School 7-6 Northwest Mitchell 37.4 377 OA 50.0 School 17 North Heritage Museum 42,9 43.2 0.3 50.0 Structure 18 South Godinez High 38.2 38.2 ().0 50.0 School 19 Northwest Godinez High 5.3 38,0 2.7 50.0 School 7-C ty -NO so qlandard or -Ambient Noise I eve I, A -dB Woen -ExistVng Noise Levels Also" cil i MFX(X0d$ [4'i*e 9landard Threshold Mid Basin Centennial Park I Le tpn 284 Well Project Final EIR 5-183 - Section 5 With the construction of the sound walls, the well borehole drilling activities and well development activities would result in noise levels that would range from a OA dB increase to a 5.3 dB increase. As shown in Table 5, the well borehole drilling activities and well development activities would not exceed the night time noise standard. Potential noise impacts would be less than significant. MB14 Well Construction The well construction activities Would he required to occur 24 hours per day 7 days a week until completion. The duration of the well construction activities would be 3 days, Table 60 and Table 61 show the noise levels during the day and night when well construction would be occurring. Table 60: M131-4 Well Construction Day Time Noise Levels Receiver Descriptions Existing existing 4 Increase Threshold Construction 1 Multi Family west Santa 41.8 411.9 0.1 55.0 Ana River Multi Family west Santa 61.9 62.0 0.1 64,9 Ana River 3 Single Family north 65.6 656 0.0 68,6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 67.4 Edinger Ave. 5 Single Family north 64.7 64.7 0.0 67.7 Edinger Ave. 6 Single family north 7117 71.8 0.1 74,7 Edinger Ave. 7 Single family north 67.6 678 0.2 70,6 Edinger Ave. 8 Multi Family north 66.2 66,3 69.2 Edinger Ave. 9 North Centennial 59.5 59.5 0.0 62.5 Education Center 10 Southeast Centennial 543 54.8 0.0 57.5 Education Center 11 Single Family east 71,8 71.8 0.0 74.8 Fairview Street 12 Single Family east 713 71.3 O'D 74.3 Fairview Street 13 Single Family east 71.3 71.3 0.0 74.3 Fairview Street 14 Single Family east 71.4 71.4 0.0 74.4 Fairview Street 15 High 536 536 0.0 55,0 tiNorl.I.Godrnez school Mid Basin Centennial Park gc8pri85 ell Project Final EIR 5-184 Section 5 16 Northwest Mitchell 43.5 43.6 0.1 58.6 School Construction 17 North Heritage Museum 48.1 48.2 0.1 55.0 Structure 18 South Godinez High 43.3 43.3 0,0 55.0 School 19 Northwest Godinez High 46.2 462 0.0 55.0 School 1 -Cjay Nn75e Stand.'rrd orAinb�enk Noise level r'3 dry when Existing NDise Levels Above City Standard EYold =Exceeds Nolse Standard) Tbr@shold With the construction of the sound walls, the well construction activities would result in noise levels that would range from a 0.1 dB increase to a 0.2 dB increase. As shown in Table 60, the well construction activity would not exceed the daytime noise standard. Additionally, the well construction activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 61: M13I-4 Well Construction Night Time Noise Levels Receiver Description Existing) ' Existing + Increase Threshold Construction 1 Multi Family west Santa 34.6 35.5 0.9 50.0 Aria River 2 Multi Family west Santa 54.5 54.5 0.0 57.6 Aria River 3 Single Family north 58.1 58.2 0.1 61.1 Edinger Ave. 4 Single Family north 57.0 57.0 0.0 610 Edinger Ave. 5 Single Family north 573 57.4 0.1 60.3 Edinger Ave. 6 Single family north 64.3 64.4 0.1 673 Edinger Ave. 7 Single family north 60.2 60,6 0.4 63.2 Edinger Ave. 8 Multi Family north 58.9 59.0 0.1 Edinger Ave. 8 North Centennial 52.1 54.6 2.5 55.1 Education Center' 10 Southeast Centennial 49.2 49.2 0.0 50.0 Education Center 11 Single Family east 66.7 667 0.0 69.7 Fairview Street 12 Single Family east 66.3 66.3 0.0 69.3 Fairview Street Mid Basin Centennial Park Ijg&g6Project Final FIR 5 -185 Section 5 13 Single Family east 663 66.3 0.0 693 Fairview Street rl�onstroctlon 14 Single Family east 66,3 663 0.0 66.3 Fairview Street 15 North Godinez High 48.4 48.4 0.0 51 School 16 Northwest Mitchell 37.4 37,6 0,2 50.0 School 4 North Heritage MuSeUlln 42.9 431 02 50.0 Stricture 18 South Godinez High 38.2 38,2 0.0 50.0 School 19 Northwest Godinez High 35.3 35.4 01 50.0 School i ii-Ciry NDisp Standard cir Ambnent Noise level 13 d13 when Ambient aiduve Giv Noise Standard Bold aExceeds NojEe SLandard Theashold With the construction of the sound walls the well borehole drilling activities would result in noise levels that would range from a OA dB increase to a 2.5 dB increase. As shown in Table 61, the construction activity would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 6 Construction Activities The Phase 6 construction activities would include well development of MBI-4. The noise levels generated during well development at MBI-4 are shown in Table 62 and Table 63. The well development activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of MBI-4 would be required to operate 12 to 24 hours a day to simulate well operations. The duration of engine testing would be 6 days for 12 hours and I day for 24 hours, Table 62: MBI-4 Well Development Day Time Noise Levels Recelvor Description Existing Existing + increase 1hrishold rl�onstroctlon 1 Multi Family west Santa 41.8 42.5 0.7 55.0 Ana River 2 Multi Family west Santa 61.9 62.0 01 64.9 Ana, River 3 Single Family north 35,15 65.6 0.0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 Edinger Ave. 5 Single Family north 64.7 647 0.1 Edinger Ave. 6 Single family inorth 71.7 71.8 O'l Mid Basin Centennial Park 21jgq&g�Project Final EIR 5 Section 5 With the construction of the souind walls the well devellopment activities would result in noise levels that would range from a 01 dB increase to a 0.7 dB increase. As shown in Table 62, the well development activities would not exceed the daytime noise standard. Additionally, the well development activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 63: MBI-4 Well Development Night Time Noise Levels Receiver Edinger Ave, �xlstlrrg , Existing + Increase Thrpshold 7 Single family north 676 67.9 0,3 70.6 1 Edinger Ave 34.6 34.7 0.1 50.0 8 Multi Family north 66-2 7-6 -3 -0.1 - 65.2 2 Edinger Ave. 54.5 54.5 0.0 57.5 9 North Centennial 59.5 59,8 0.3 62.5 3 Education Center 58.1 58,1 0,0 6 1 A 10 SoutheasE Centennial 54,8 54,8 00 550 Education Center -1 Single Family east 71.8 71 _8 &C 74,8 Fairview Street 12 Single Family east 71.3 71.3 0.0 74.3 Fairview Street 13 Single Family east 71.3 71 3 0,0 74.3 Fairview Street Single Family east 7t-471.4 0.0 74.4 Fairview Street 15 North Godinez High 53,13 53.6 0.0 550 School 16 Northwest Mitchell 43.5 43,7 0,2 55,10 School 17 North Heritage MuseUM, 48.1 48.3 02 55.0 Structure 18 South Godinez High 413 433 0.0 55,0 School 7-9 Northwest Godinez High 46,2 462 0.0 55.0 School I "City Nose standard or Ambient Nome level +3 d8 When Existing Noise Levels Above Culy standard With the construction of the souind walls the well devellopment activities would result in noise levels that would range from a 01 dB increase to a 0.7 dB increase. As shown in Table 62, the well development activities would not exceed the daytime noise standard. Additionally, the well development activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 63: MBI-4 Well Development Night Time Noise Levels Receiver i Doscriptilain �xlstlrrg , Existing + Increase Thrpshold 1 C onstrootlian 1 Multi Family west Santa - 34.6 34.7 0.1 50.0 Ana River 2 Multi Family west Santa 54.5 54.5 0.0 57.5 Ana River 3 Single Family north 58.1 58,1 0,0 6 1 A rrr Mid Basin Centennial Park Injectonigli Project Final EIR 5-187 2 8 Section 5 With the construction of the sound walls the well development activities would result in noise levels that would range from a -0,2 dB decrease to a 0,2 dB increase. As shown in Table 63, the construction activity Would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 7 Construction Activities Phase 7 construction activities would include: Sound Panel Construction and Removal at the Monitoring Well, Conductor Casing Installation at the Monitoring Well; Borehole Drilling and Reaming at the Monitoring Well; Well Construction at the Monitoring Well; Well Development at the Monitoring Well; and Well Equipping at MBI-2 and MBI-4, Mid Basin Centennial Park �&dnj gbProject Final PIP 5-188 Edinger Ave. 4 Single Family north 57.0 5'7,0 0.0 60,0 Edinger Ave. 5 Single Family north 573 57,3 Edinger Ave. 6 Single famfly north 643 64.4 0.1 67.3 Edinger Ave. 7 Single family north 601.2 60.4 02 63,2 Edinger Ave. 8 Multi Family north 58,9 58.9 0.0 61,9 Edinger Ave. 9 North Centennial 521 51.9 ri -0.2 55.1 Education Center to Southeast Centennial 49.2 49.2 O.C) 50,0 Education Center A�G 11 Single Family east 661 60- 00 69.7 Fairview Street 12 Single Family east 66,3 66.3 on. 69.3 Fairview Street 13 Single Family east 663 663 O'G 69.3 Fairview Street 14 Single Family east 66.3 66.3 ad 69.3 Fairview Street 15 North Godinez High 48.4 48.4 D'a 50.0 School 16 Northwest Mitchell School 37.4 37.4 0.0 6o.0 17 North Heritage Museurn 42.9 i 43.0 0.1 50.0 Structure 18 South Godinez High 38.2 38.2 0.0 50,0 School 19 Northwest Godinez High 353 35.4 0 School I I I-City Noise Standard -rAmbenl Morse level try V when ExiMing No),qu Levels Above. CNIy SlffdoW sold -E.Kxa& NnesiSeind.,ird rhrashoM With the construction of the sound walls the well development activities would result in noise levels that would range from a -0,2 dB decrease to a 0,2 dB increase. As shown in Table 63, the construction activity Would not exceed the night time noise standard. Potential noise impacts would be less than significant. Phase 7 Construction Activities Phase 7 construction activities would include: Sound Panel Construction and Removal at the Monitoring Well, Conductor Casing Installation at the Monitoring Well; Borehole Drilling and Reaming at the Monitoring Well; Well Construction at the Monitoring Well; Well Development at the Monitoring Well; and Well Equipping at MBI-2 and MBI-4, Mid Basin Centennial Park �&dnj gbProject Final PIP 5-188 Section 5 Monitoring Well Sound Wall Construction The noise levels increases generated from the construction of the sound wall at the monitoring well would range from 9.3 dB increase to 13.2 dB increase. The construction of the Sound wall would take 2 days and the removal of the sound wall Would take 2 days. As shown in Table 64, the sound wall construction would exceed the City's day time noise standard. The construction of the sound walls would occur during the day when the construction activity would be exempt under the City's Noise Ordinance, To minimize noise impacts at Godinez High School and the Heritage Museum, the project has incorporated a design feature that requires the construction of the Sound wall to occur when school is not is session, Potential construction noise impacts would be less than significant. Table 64: Monitoring Well Sound Wall Construction Noise levels Receivers DeiiOriptlon Existing Existing' Increase (1)'Nolse Construction Standard threshold 1 Multi Family West 41+8 41.8 0.0 55.0 Santa Ana River 2 Multi Family west 61.9 61.9 (H 64.9 Santa Ana River 3 Single Family north 65.6 65.6 0,0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 _0 -0 67-4 Edinger Ave. 5 Single Family north 64.7 64.7 cc 677 Edinger Ave. 6 Single family north 713 71.7 C.c 741 Edinger Ave. 7 Single family north 67.6 67.6 0.0 70,6 Edinger Ave, 8 Multi Family north 66.2 66.2 0-0-692 Edinger Ave. 9 North Centennial 59,5 69.5 0.0 62.5 Education Center I 10 Southeast Centennial 54.8 54.8 0.0 55.0 Education Center 11 Swingle Family east 71.8 71.8 0.0 74,8 Fairview Street 12 Single Family east 71.3 71.3 0-.0 74.3 Fairview Street 13 Single Family east 71.3 71.3 0.0 74.3 Fairview Street r74 T4:: 14 Single Family east 71A 71.4 0.0 Fairview Street (� , Mid Basin Centennial Park I g6nJ611 0 I Project Final ER 5-189 2 Sections 5 15 North Godinez High 5316 53.6 0.0 55.0 School Construction Standard 16 Northwest Mitchell 43.5 53.2 97 55.0 1 School 41,8 41.8 0.0 550 17� North Heritage 48.1 57.4 9.3 55.0 2 Museum Structure 6'1.9 61.9 0.0 64.9 is out Godinez High 43.3 56.5 13.2 55.0 3 School 65.6 65.6 0.0 68.6 19 Northwest Godinez 46.2 47.0 0.s 55.0 4 High School 64.4 64.4 10 67.4 7 City hBolse lStandard trr An Noise level +3 de When Existing Noise Levels Above City Standard Bold =ExcaaeCS NrSise Shandanf Threshold Monitoring Well Conductor Casing Installation With the construction of the sound walls, the installation of the conductor casing at the monitoring well would result in noise levels that would range from a 2.1 dB increase to a 5.4 dB increase. As shown in Table 66, the installation of the conductor casing would not exceed the City's day time noise standard. The instalilation of the conductor casing would take 1 day and would occur during the day when the construction activity would be exempt under the City's Noise Ordinance, potential noise impacts would be less than significant. Table 65: Monitoring Well Conductor Casing Installation Noise levels Receiver Description Existing Existing+ Increase t1j Noise ' Construction Standard Threshold 1 Multi Family west 41,8 41.8 0.0 550 Santa Ana River 2 Multi Family west 6'1.9 61.9 0.0 64.9 Santa Ana River 3 Single Family north 65.6 65.6 0.0 68.6 Edinger Ave- 4 Single Family north 64.4 64.4 10 67.4 (Edinger Ave. 5 Single Family north 64.7 647 0.0 67.7 Edinger Ave. 6 Single family north 717 71.7 0.0 747 Edinger Ave. 7 Single family north 67.6 67.6 0.0 70.6 Edinger Ave. 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centenn4 59.5 59.5 00 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0.0 550 I Mid Basin Centennial park Injection Well project Final EIR 5' -190 25C -291 Section 5 Monitoring Well Borehole Drilling and Reaming The noise levels generated during borehole drilling for the monitoring well are shown in Table 66 and Table 67. The borehole drilting activities would occur 24 hours seven days a week over an 8 day period. Table 66: Monitoring Well Borehole Drilling Day Time Noise Levels Receiver Education Center EXIsting Ex4;t11n'g,+ Increase Thresbpld 11 Single Family east 71,8 71 8 10 74.8 1 Fairview Street 41.8 41,8 0.0 55.0 12 Single Family east 71,3 71.3 0.0 74.3 2 Fairview Street 61.9 62.0 01 64.9 13- Single Family east 71.3 71.3 0,0 3 Fairview Street 1 65.6 65.6 0.0 6&6 14 Single Family east 71 A 71.4 ac 74.4 4 Fairview Street 64.4 64.4 0.0 67.6 15 North Godinez High 516 53.6 D'O 55.0 5 School 647 64.7 0.0 67.7 16 Northwest Mitchell 43.5 45.6 2.1 55.0 6 School 71,7 71,7 0.0 743 17 North Heritage 48.1 50.2 2-1 55.0 7 Museum Structure 67.6 67.6 0.0 70,6 18 South Godinez High 433 487 5.4 55.0 8 School 66.2 66.2 0.0 69,2 19 Northwest Godinez 46,2 46.2 &C 550 High School 1 -City Noise StandarO orAmbientNoim love, •0d8 Mai, Existing Nrjiq+? LovasAb(m Citystan'Jarl BQ1di mL.iepls ThreshOd Monitoring Well Borehole Drilling and Reaming The noise levels generated during borehole drilling for the monitoring well are shown in Table 66 and Table 67. The borehole drilting activities would occur 24 hours seven days a week over an 8 day period. Table 66: Monitoring Well Borehole Drilling Day Time Noise Levels Receiver Oescription EXIsting Ex4;t11n'g,+ Increase Thresbpld tiatirstruction 1 Mull Family west 41.8 41,8 0.0 55.0 Santa Ana River 2 Multi Family west 61.9 62.0 01 64.9 Santa Ana River 3 Single Family north 1 65.6 65.6 0.0 6&6 Edinger Ave, 4 Single Family north 64.4 64.4 0.0 67.6 Edinger Ave, 5 Single Family north 647 64.7 0.0 67.7 Edinger Ave. 6 Single family north 71,7 71,7 0.0 743 Edinger Ave. 7 Single family north 67.6 67.6 0.0 70,6 Edinger Ave. I I 8 Multi Family north 66.2 66.2 0.0 69,2 Edinger Mid Basin Centennlial Park Inlec in Well Project Final ERR 5-191 -292 Section 5 9 North Centennial 59.5 59 -5-0-0- - 62,5 Education Center Construction mm 10 Southeast Centennial 54,8 54.8 0,0 55,0 Education Center 11 Single Familly Past 71,8 71,8 J b 74.8 Fairview Street 12 Single Family east 71.3 71.3 0.0 74 3 Fairview Street 13 Single Family east 71.3 71,3 0.0 74.3 Fairview Street 14 Single Family east 71.4 71 A 0.0 74.4 Fairview Street I 15 North Godinez High 53,6 53.6 1 0.0 55.0 School 16 Northwest Mitchell 43.5 47.0 35 55.0 School 17 North Heritage 48.1 51.8 33 55.0 Museum Structure South Godinez High 413 511.0 7.7 55.0 School 19 Northwest Godinpz 462 46.2 0,0 55.0 High School J 1 I=City N oise Standad orAfrbient Noise le�pl Q dB When Existing Noise Levels Above City GiLlindard -1 _±GId =EIL �eod� Noise Standw(f Tlire-5hold With the construction of the Sound walls, the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 7.7 dB increase. As shown in Table 66, the construction activity would not exceed the daytime noise standard. Additionally, the borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 67: Monitoring Well Borehole Drilling Night Time Noise Levels Receiver Description Existing lExisting + Increase Threshold Construction mm 1 Multi Family west 34.6 35.0 0.4 500 Santa Ana River 2 Multi Family west 54.5 54.5 0,0 575 Santa Ana River Single Family north 58,1 56.1 00 61.1 Edinger Ave. 4 Single Family north 570 57.0 00 60.0 Edinger Ave. 5 Single Family north 57 3 7 -73 0,0- 603 Edinger Ave. I In Mid Basin Centennial Park jec oll P roject Final EIR 5-192 kzi, 2 6n We-293 Section 5 6 Sing e I'l north -- 643 64.3 01 7C-7-3 Edinger Ave. 7 Single Family -north BU 60,2 0.0 63.2 Edinger Ave, 8 Multi Family north 58,9 58.9 0,0 61.4 Edinger Ave, 9 North Centennial 521 52.1 00 551 EdLIGatl ©n Center 10 Southeast Centennial 49.2 49.3 0.0 50.0 Education Center 11 Single Family east 66.7 66.7 00 693 Fairview Street 12 Single Family east 66.3 663 0.0 69.3 Fairview Street -3 Single Family east 66.3 66.3 0,0 69.3 Fairview Street 14 Single iEenroy -east -66.3 66.3 0,0 69,3 Fairview Street 15 North Godinez High 48.4 48.4 9,0 50.0 School Northwest Mitchell 37,4 45,2 7.8 50.0 School 17 North Heritage 42.9 50.1 7.2 50.0 Museum Structure 18 South Godirraz High 381 50.7 12.5 50.0 School 19 Northwest -Godinez 35.3 36.2 0.91 50.0 High School 11 1-Giry Nuse, Standard or Arnhei Noise level 13 d8 Whon rvi.Onq Noise LevP19 AhaWe C,'.Iy Stai,daed Baba' lTyceeds Noise Standard ThreshnId With the construction of the sound walls the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 12.5 dB increase. As shown in Table 67, the construction activity would exceed the night time noise standard at Receptors 17 and 18 by less than 1 dB. The construction activity would occur at night when school is not session at Godinez High School and when no sensitive receptors would be at the Heritage Museum. Because no sensitive receptors would be present potential noise impacts would be less than significant. Monitoring Well Construction The well construction activities would be required to occur 24 hours per day 7 days a week until completion. The duration of the well construction activities would be 3 days, Table 68 and Table 69 show the noise l�evels during the day and night when well construction would be occurring. Mid Basin Centennial IPark 1� anj 1, roject Final EIR 5-193 Section 5 Table 68-. Monitoring Well Construction Day Time Noise Levels Receiver Description Existing ExJisting + Increase Tbreshold Construction Multi Family west 41;.8 41.9 QA 55.0 Santa Ana River Multi Family west 61.9 61.9 U 64.9 Santa Ana River 3 Single Family north 65.6 656 0.0 68,6 Edinger Ave. 4 Single Family -north 64.4 64.4 0.0 67.4 Edinger Ave, 5 Single Family north 647 64.7 0,0 67.7 Edinger Ave. 6 Single family north, 71,7 717 0.0 74.7 Edinger Ave. 7 Single family north 67.6 67,6 Oc 70.6 Edinger Ave. 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centennial 59,5 59,5 00 62,5 Education Center Southeast Centennial 54.8 54.13 0.0 55.0 Education Center 11 Single Family Bast 71.8 71.8 0.0 74.8 Fairview Street 12 Single Family east 71.3 71.3 O'D 74.3 Fairview Street 13 Single Family east 71.3 71.3 0,0 743 Fairview Street 14 Single Family east 71 A 71.4 0.0 74.4 Fairview Street 15 North Godinez High 53.6 53.6 0.0 566 School 16 Northwest Mitch-ell 43.5 46.5 3.0 55.0 School 17 North Heritage 481 511 3,0 55'0 Museum Structure is South Godinez High 43,3 51.9 7.6 55.0 School 19 Northwest Godinez 46,2 46.4 0,2 55.0 High School I .... .. Bold Stan Jar, Thre?,N)Iil With the construction of the sound walls, the construction of the monitoring well would result in noise levels that would range from a 01 dB increase to a 7.6 dB increase. As shown in Table 68, the construction of the monitoring well would not Mid Basin Centennial Park Injection Well Project Final EIR 5-194 25C-295 Section 5 exceed the City's day tilme noise standard. The construction of the monitoring well would occur during the day when the construction activity would be exempt under the City's Ordinance. Potential noise impacts would be Jess than significant. Table 69: Monitoring Well Construction Night Time Noise Levels Receiver Description Existing Existing + Increase Threshold Construction 1 Multi Family west 34.6 35.0 0.4 50.0 Santa Ana River 2 Multi Family west 54.5 54,5 0.0 57,5 Santa Ana River 3 Single Family north 58 1 58.1 0.0 61.1 Edinger Ave. 4 Single Family north 57.0 57.0 0,10 60.0 Edinger Ave. 5 Single Family north 57.3 57.3 0.0 60.3 Edinger Ave. 6 Single family north 64,3 64.3 0.0 67.3 Edinger Ave. 7 Single family north 60.2 60.2 0.0 63.2 Edinger Ave, 8 Multi Family north 58.9 58.9 OX 61.9 Edinger Ave, 9 North Centennial 52.1 52.1 OX 551 Education Center 10 Southeast Centennial 49,2 49.3 0.1 50,0 Education Center 11 Single Family east 66 7 66,7 0.0 697 Fairview Street 12 Single Family east 66.3 663 0.0 693 Fairview Street 13 Single Family east 66.3 66.3 U 69.3 Fairview Street 14 Single Family east 66,3 663 0.0 693 Fairview Street 15 North Godinez High 48.4 48.4 q.q 50.0 School 16 Northwest Mitchell 37.4 44.3 6.9 50.0 School 17 North Heritage 42.9 49.0 6,1 50.0 Museum Structure 18 South Godinez High 38.2 50,11 11.9 50.0 School 19 Northwest Godlinez 353 37.7 2.4 50 0 High School City No,se Standard or A, Nent Noiso I aM,' 3 dU N4,r ExisiOng NORP. Levels lowe City Siwd .. I 15.1d WN, st,,,dwd rt,ert u Mid Basin Centennial Park Injec on Well Project Final EIR 5-195 6-296 Section 5 With the construction of the sound walls, the construction of the monitoring well would result in noise levels that would range frorn a 0.1 dB increase to an 11.9 dB increase. As shown in Table 69, the construction activity would exceed the night time noise standard at Receptors 18 by less than 1 dB, The construction activity would occur at night when school is not session at Godinez High School. Because no sensitive receptors would be present potential noise impacts would be less than significant. Monitoring Well Development The noise levels generated during well development of the monitoring well are shown in Table 70 and Table 71. The well development activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of the monitoring well would be required to operate 12 to 24 hours a day to Simulate well operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours, Table 70, Monitoring Well Development Day Time Noise levels Receiver Descriptlon Existing Existing + 'Ingresse, Thilroslill Construotion I Multi Family west 41.8 421 03 55,0 Santa Ana River Multi Family west 61.9 62,0 0.1 64.9 Santa Ana River 3 Single Family north 65e 65.6 0.0 68.6 Edinger Ave. 4 Single Family north 64 A 64.4 0.0 67.6 Edinger Ave. 5 Single Family north 64.7 647 0,0 67.7 Edinger Ave. 6 Single family north 71.7 71.7 0,10 74.7 Edinger Ave. 7 Single family north 676 67,6 0,0 70,6 Edinger Ave. 6 Multi Family north 68.2 68.2 0,0 Edinger Ave. 9 North Centennial 59.5 59.5 0.0 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0,0 55 Education Center 11 Single Family east 71,8 71.8 0.0 748 Fairview Street 12 Single Family east 71.3 71.3 0 Fairview Street 13 Single Family east 71.3 71.3 0 Mid Basin, Centennial Park Injection Well Project Final EIR 5-196 25C-297 Section 5 With the construction of the sound walls, the development of the monitoring well would result in noise levels that would range From a 0.1 dB increase to a 10.8 dB increase. As shown in Table 70, the development of the monitoring well would not exceed the City's day time noise standard. Additionally, the development activities For of the monitoring well would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 71: Monitoring Well Development Night Time Noise levels Receiver Fairview Street Existing Existing + increase Threshold 14 Single Family east 71 A 71.4 0,0 74.4 1 Fairview Street 34.6 34,8 0.2 50.0 15 North Godinez High 53,6 53.6 Ll.d 55.0 2 School 54,.5 545 0.0 57.5 16 Northwest Mitchell 43.5 48.1 4,8 55.0 3 School 58.11 58.1 10 61.1 17 North Heritage 48.1 52,1 40 550 4 Museum Structure 57.0 57,0 0.0 60.0 18 South Godinez High 43.3 54.1 10.8 55.0 5 School 57,3 57.3 0.0 60.3 19 Northwest Godiinez 46.2 46.4 02 55.0 6 High School 64.3 54.3 0,0 67.3 I= City Nose, StarxMrd w Ambient Noise level +3 JS WIion Existing N e Levels Abeve City Sondaid Bolus = Exceeds Noise Silmdard 7fireshold With the construction of the sound walls, the development of the monitoring well would result in noise levels that would range From a 0.1 dB increase to a 10.8 dB increase. As shown in Table 70, the development of the monitoring well would not exceed the City's day time noise standard. Additionally, the development activities For of the monitoring well would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 71: Monitoring Well Development Night Time Noise levels Receiver Description Existing Existing + increase Threshold Construction 1 Multi Family west 34.6 34,8 0.2 50.0 Santa Ana River 2 Multi Family west 54,.5 545 0.0 57.5 Santa Ana River 3 Single Family north 58.11 58.1 10 61.1 Edinger Ave. 4 Single Family north 57.0 57,0 0.0 60.0 Edinger Ave. 5 Single Family north 57,3 57.3 0.0 60.3 Edinger Ave. 6 Single family north 64.3 54.3 0,0 67.3 Edinger Ave. 7 Single family north 60,2 60.2 0.0 63.2 Edinger Ave. 8 Multi Family north 58.9 58.9 0.0 61,9 Edinger Ave. 9 North Centennial 52.1 521 0.0 55.1 Education Center 10 Southeast Centennial 49.2 49.2 0.0 50.0 Mid Basin Centennial Park c on W 1111 Project Final BIR 5 -197 T9 Section 5 With the construction of the sound walls, the devellopment of the monitoring well would result in noise levels that would range from a 0.2 dB increase to a 4.9 dB increase. As shown in Table 71, the development of the monitoring well would not exceed the night time noise standard. Potential noise impacts would be less than significant. .. 0 The noise levels generated from well equipping at MBI-2 and MBI-4 are shown in Table 72. All of the well equipping activities Would occur during the day over a 14 day period. Table 72: M131-2 and Ill Well Equipping Noise Levels Receiver EdUCatiOn Center Existing ExIlstirip + Increase Threshold 11 Single Family east 66,7 66.7 D'a 69.7 1 Fairview Street 41.8 43.2 1.4 55.0 12 Single Family east 66.3 66.3 00 69.3 2 Fairview Street 61.9 62.0 0.1 64.9 13 Single Family east 66.3 663 0,0 69.3 3 Fairview Street 65.6 65.6 0.0 68.6 14 Single Family east 66.3 66.3 0.0 69.3 4 Fairview Street 64.4 64.4 OL 67.6 15 North Godinez High 48.4 484 0.0 500 5 School 64.7 64.8 73 16 Northwest Mitchell 37.4 39.1 1.7 500 School 17 North Heritage 42.9 44.3 1.4 50.0 MUSeUrn Structure 18 South Godinez High 38.2 43.1 4.9 50.0 School 19 Northwest Godinez 35.3 35.5 0.2 50.0 High School L ,I= 0* Noise SWndatd a rAnd on I Nosa level Q d3 When Exist i rig No me Level e A buye Clay SiAnd�ard Bold =Exceeds Noise standard Thre5huid With the construction of the sound walls, the devellopment of the monitoring well would result in noise levels that would range from a 0.2 dB increase to a 4.9 dB increase. As shown in Table 71, the development of the monitoring well would not exceed the night time noise standard. Potential noise impacts would be less than significant. .. 0 The noise levels generated from well equipping at MBI-2 and MBI-4 are shown in Table 72. All of the well equipping activities Would occur during the day over a 14 day period. Table 72: M131-2 and Ill Well Equipping Noise Levels Receiver Descriptions Existing ExIlstirip + Increase Threshold Construction 1 Multi Family west 41.8 43.2 1.4 55.0 Santa Ana River 2 Multi Family west 61.9 62.0 0.1 64.9 Santa Ana River 3 Single Family north 65.6 65.6 0.0 68.6 Edinger Ave. 4 Single Family north 64.4 64.4 OL 67.6 Edinger Ave. 5 Single Family north 64.7 64.8 73 Edinger Ave, Mid Basin Centennial Park jg&nj 8 4bProject Final EIR 5-19 Section 5 6 Single fa m01 yno north 71,8 01 74,7 Edinger Ave. 7 Single family north 67.6 677 01 70,6 Edinger Ave. 8 Multi Family north 062 66.3 0.1 692 E6nger Ave. 9 North Centennial 59.5 59.1 -0.4 62,5 Education Center 10 Southeast Centennial 548 54.6 J'a 55,0 Education Center 11 Single Family east 71.8 J 71.8 00 74.8 Fairview Street I Single Family east 71.3 71.3 0.0 74.3 Fairview Street t3 Single Family east 71.3 71.3 0.0 74,3 Fairview Street 14 Single Family east 71 A 71.4 0.0 74.4 Fairview Street "15 North Godinez High 53,6 53.6 0-.0 55,0 School 16 Northwest WOO 415 416 0.1 55.0 School 17 North Heritage 48.1 52.1 D'O 55.0 Museum Structure 18 South Godinez High 43.3 43.3 1 55.0 School 19 Northwest Godinez 46,2 46.5 0.6 55,10 High School 1-Fitly Noise Standard or Ambient Wise level F3 dS VVhen EXIMIM9 Naive Levels Aho", r1le3laf7d-arri Bold =Excee,,ds Noise Standard Thresheld With the construction of the sound walls, the well equipping would result in noise levels that would range from a -0.4 dB decrease to a 1.4 dB increase. As shown in Table 72, the well equipping would not exceed the City's day time noise standard. Additionally, the well equipping would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Phase 8 Construction Activities The Phase 8 construction activities would include: Well Equipping at MBI-3; Well Equipping at MBI-5; Paving Centennial Park's roads and parking lots; and Skate Park fence and camera improvements. Since all four activities have the potential to occur simultaneously with any of the other construction activities in Phase 8, all four activities have been analyzed together and the noise impacts are shown in Table 73. Ail construction activities associated with the well equipping, paving, and Skate Park improvements would occur during the day, Mid Basin Centennial Park �662kbi Project Final EIR 5-199 Section 5 Table 73: MBI-3and MBI.5 Well Equipping, Paving and Skate Park Day Time Noise Levels Receiver Description Existing Existing + increase Threshold Construction 1 Mull! Family west Santa 41.8 44.2 2.4 55.0 Ana River 2 Multi' Family west Santa 61 9 62:0 01 64.9 Aria River 3 Single Family north Edinger 65.6 65.6 0,0 68,6 Ave. 4 Single Family north Edinger 64.4 64.6 0.2 67.4 Ave, 5 Single Family north Edinger 647 64.9 U 67.7 Ave. 6 Single family north Edinger 717 71.7 0.0 74.7 Ave, 7 Single family north Edinger 67,6 676 0.0 7'0.6 Ave, 8 Multi Family north Edinger 66.2 66.3 0.1 69.2 Ave. 1 9 North Centennial Education 59.5 59,6 0.1 62.5 Center 10 Southeast Centennial 54.8 63.5 8.7 55.0 Education Center 11 Single Family east Fairview 71 _87T9- 0 1 74,8 Street 12 Family east Fairview 71.3 71.5 0.2 74.3 Street 13 Single Family east Fairview 71.3 71.5 0.2 74.3 Street 14 Single Family east Fairview 71 A 71 A 0,0 74.4 Street Is North Godinez High 53.6 56.7 2.1 55.0 School 16 Northwest Mitchefl School 43.5 442 0.7 55.0 17 North Heritage Museum 48 .1 49.1 59.0 Structure 18 South Godinez High School 43.3 43.4 0.1 55.0 19 Northwest Godinez High 46.2 50.7 4,5 55.0 School 1 =City Noise Standard or Ambient Noise ImvmV k3 dO Wirem Exiving Noise LovWs Above Cia Standard 8.10 -E=aads Wjis,. Standard Threshdd With the construction of the sound walls the construction activities would result in noise levels that would range from a 0-1 dB increase to 83 dB increase. As shown in Table 73 the construction activities would exceed the City's day time noise standard at Receptor 10 and 15. Title construction activities would occur Mid Basin Centennial Park 2 In 3 jec on Well Project Final EIR 5-200 6-01 Section 5 during the day when the construction activity would be exempt Under the City's Ordinance. The most substantial noise source from the construction activities would be from the paving operations. To minimize noise impacts at Godinez High School and the Centennial Education Center, the project has incorporated a design feature that requires the paving operations to occur during when school is not in session. Potential noise impacts would be less than significant. Well Redevelopment Activities MB-2, MBI-3, ll MBI-5, Monitoring Well The well redevelopment activities would occur approximately every two to five years for each of the four injection wells and the monitoring well. The well redevelopment would take approximately 10 days per well to complete and would occur during the day. All five proposed wells were analyzed together to provide a worst-case analysis. The operation noise levels are shown if Table 74. Table 74: Well Redevelopment Activities M1131-2, MBI-3, MBI.4, MBI-5, Monitoring Well Receiver Description Existing Existing, + increase Threshold corristfuction I Multi Family west Santa 41,8 46.7 4.9 55.0 Ana River 2 1 Family west Santa 61.9 62.1 02 64.9 Ana River 3 Single Family north 656 662 0.6 68.6 Edinger Ave, 4 Single Family north 64A 663 1.9 67.4 Edinger Ave, 5 Single Family north 64.7 65.6 0.9 67.7 Edinger Ave. 6 Single family north 713 72.0 03 74,7 Edinger Ave. 7 Single family north 67.6 68.6 1.0 70.6 Edinger Ave 8 Multi Family north Edinger 662 66.5 03 69.2 Ave. 9 North Centennial 59.5 63.3 3.8 62,5 Education, Center 16- Southeast Centennial 54.8 56.7 1.9 55.0 Education Center 11 Single Family east 71.8 71,9 0.1 Fairview Street 12 Single Family east 71.3 71.9 0.3 743 Fairview Street 13 Single Family east 71 71,6 0.5 743 Fairview Street 74- Single Family east 71.4 71.6 0.2 74.4 Mid Basin Centennial Park �Jg,&nk�Project Final El R 5-201 Section 5 The well redevelopment activities would increase noise level's within the project area. As shown in Table 74, the well redevelopment activities would exceed the City's day time noise standard at Receptors 9, 10, 15, 16, 17, 18, and 19. All of the redevelopment activities would occur during the day when the well redevelopment activities Would be exempt under the City's Noise ordinance. Receptors 9, 10, 15, 16, 17, 18, and 19 are school facilities. To minimize noise impacts the project has incorporated a design feature that would require the well redevelopment activities to occur when school is not in session. Potential noise impacts would be less than significant Alternative 3 Lower Intensity Alternative Under Alternative 3, one less injection well and a reduced amount of piping would be constructed. The lower intensity alternative would not include construction of MBI-2, located in the southwest corner of Centennial Park, or the pipelines associated with MBI-2. All other portions of Alternative 3 would remain the saute as the Proposed Project. Alternative 3 would have the same construction noise impacts as the Proposed Project for construction Phases 1, 2, 3, 6, and 8. Under Alternative 3, the noise impacts generated from construction Phases 4, 5 and 7 would be reduced. The construction noise impacts from Phase 4, 5, and 7 and the operational well redevelopment activities for Alternative 3 are evaluated below. Phase 4 Construction Activities Phase 4 construction activities would involve Well Development at MBI-3. The noise levels generated during well development are shown in Table 75. The well development activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of the monitoring well would be required to operate 12 to 24 hours a day to simulate l Mid Basin Centennial Park I 'ednk l Project Final EIR 5-202 kJ enn i - Y Fairview Street 15 North Godinez High ft53.6 f 56.1 2.5 55.0 School 16 Northwest Mitchell 43.5 61.9 -- 1-8.4 55.0 School —17— North Heritage Museum 48.1 62.6 14.5 55.0 Structure —8 South Godinez High 43,3 WO 22,7 55.0 School 19 Northwest Godinez High 46.2 55.9 9.7 5510 School I 17G y Noise 9tandard or Ambient Naose Eevp I l3 d8 W I ov Exus(mg Noi,9e Levels AWve (;i(y $raoidard Bold -Exceeds Noise Standard 70resho4d The well redevelopment activities would increase noise level's within the project area. As shown in Table 74, the well redevelopment activities would exceed the City's day time noise standard at Receptors 9, 10, 15, 16, 17, 18, and 19. All of the redevelopment activities would occur during the day when the well redevelopment activities Would be exempt under the City's Noise ordinance. Receptors 9, 10, 15, 16, 17, 18, and 19 are school facilities. To minimize noise impacts the project has incorporated a design feature that would require the well redevelopment activities to occur when school is not in session. Potential noise impacts would be less than significant Alternative 3 Lower Intensity Alternative Under Alternative 3, one less injection well and a reduced amount of piping would be constructed. The lower intensity alternative would not include construction of MBI-2, located in the southwest corner of Centennial Park, or the pipelines associated with MBI-2. All other portions of Alternative 3 would remain the saute as the Proposed Project. Alternative 3 would have the same construction noise impacts as the Proposed Project for construction Phases 1, 2, 3, 6, and 8. Under Alternative 3, the noise impacts generated from construction Phases 4, 5 and 7 would be reduced. The construction noise impacts from Phase 4, 5, and 7 and the operational well redevelopment activities for Alternative 3 are evaluated below. Phase 4 Construction Activities Phase 4 construction activities would involve Well Development at MBI-3. The noise levels generated during well development are shown in Table 75. The well development activities would occur 24 hours seven days a week over an 8 day period. Additionally, test engines utilized in the well development of the monitoring well would be required to operate 12 to 24 hours a day to simulate l Mid Basin Centennial Park I 'ednk l Project Final EIR 5-202 kJ enn i - Y Section 5 well Operations. The duration of engine testing would be 6 days for 12 hours and 1 day for 24 hours. Table 75: MBI -3 Well Development Day Time Noise levels Receiver Desorption (Existing Existing * Increase Threshold Construction - 1 Multi Family west 41.8 42.9 8.1 55.0 Santa Ana River 2 Multi Family west 61.9 62.0 0.1 64.9 Santa Ana Rival, 3 Single Family north 65.6 65.6 0,0 68.5 Edinger Ave. 4 Single Family north 64.4 647 0.3 67.6 Edinger Ave. 5 Single Family north 641 64.8 0.1 67.7 Edinger Ave. 6 Single family north 71.7 713 10 74.7 Edinger Ave. 7 Single family north 67.5 67.6 0.0 70.6 Edinger Ave. 8 Multi Family north 66.2 66.2 0.0 69.2 Edinger Ave. 9 North Centennial 59.5 59.5 0.4 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0.0 Education Center 11 Single Family east 71.8 71.8 0.0 8 Fairview Street [55.0 12 Single Family east 71.`3 71.3 0.0 3 Fairview Street Single Family east 713 71.3 0.0 .3 Fairview Street 14 Single Family east 71.4 71 A 0.0 74.4 Fairview Street 15 North Godinez High 53.6 536 0.0 55.0 School 16 Northwest Mitchell 43.5 47.0 3.5 55.0 School 17 North Heritage 48.1 489 0.8 55,0 Museum Structure 18 South Godinez High 413 43.4 0.1 55.0 School 19 Northwest Godinez 46.2 52.4 6.2 55.0 High School R -City Noise Standard or Arnblent Noise level Q dS when Ambient above U4 Noise Standard Bold =Exceeds Noise. Standard Threshold t Mid Basin Centennial Pare �tq&n y 4Project Final EIR 5 -203 Section 5 With the construction of the sound walls the well development activities would result in noise levels that would range from a 0.1 dB increase to 8.1 dB increase. As shown in Table 75, the well development activities would not exceed the City's day time noise standard. Additionally, the development activities for the monitoring well would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts would be less than significant. Table 76: MBI-3 Well Development Night Time Noise levels Receiver Description Existing Existing + Increase Threstl Construction 1 Multi Family west Santa 34.6 41.0 6.4 50.0 Ana River -9-7-5 2 Multi Family west Santa 54.5 54.5 0,0 Ana River 3 Single Family north 58,1 55.2 0.1 61.1 Edinger Ave. 4 Single Farrity north 57.0 57,2 0.2 60.0 Edinger Ave, 5 Single Family north 573 57.4 D'i 60.3 Edinger Ave. 6 Single family north 54-3 84.3 D'o 673 Edinger Ave. 7 Single family north 60.2 130,2 Dro 63.2 Edinger Ave. 8 Multi Family north 589 58.9 0.0 61.9 Edinger Ave. 9 North Centennial 521 521 0.0 551 Education Center 110 Southeast Centennial 49.2 49.2 D'a 50.0 Education Center 41 Single Family east 66.7 66.7 0,0 69.7 Fairview Street 12 Single Family east 66.3 663 0.0 693 Fairview Street 13 Single Family east 66.3 66,3 P 69.3 Fairview Street 14 Single Family east 66,3 66.3 0,0 Fairview Street 15 North Godinez High 48 4 48.4 D'o 50.0 School '16 Northwest Mitchell 37.4 38.5 1.1 50.0 School 17 North Heritage Museum 42.9 43.1 0.2 50.0 Structul 0 18 -- South Godinez High - 38.2 38.2 0,0 50 0 Mid Basin Centennial Park Ae-&& Project Final EIR 5-204 Section 5 C 100 -Northwest -Godinez t 35.3 ! 40.9 High School 1 - Oky Noise Standard or A rntoiwt NO L I P.vol +3 dB Whon FxiMiriq Noise OSvo I& Above City Standard Ruld wExedr Noise I taitrivil Threshold With the construction of the sound walls, the well development activities would result in noise levels that would range from a 0.1 dB increase to a 6.4 dB increase. As shown in Table 76, the well development activities would not exceed the City's night time noise standard. Potential noise impacts would be less than significant. Phase 5 Construction Activities Under Alternative 3, the Phase 5 construction activities would be limited to Borehole Drilling and Reaming at MBI-4 without concurrent MB12 well development activities. The noise levels created during the borehole drilling at MBI-4 is shown in Table 77 and Table 78. The borehole drilling activities would be required to operate 24-hours per day 7 days a week until completion of the borehole drilling in order to prevent a cave in of the borehole. Table 77: IVIBI-4 Borehole Drilling Day Time Noise levels Receiver Oescripton Existing Existing + increase Threshold Construction 1 Multi Family west Santa 41.8 421 0-3 75 _0 Ana River 2 Multi Family west Santa 61.9 62.0 01 64.9 Ana River 3 Single Family north 65.6 65.6 0.0 68,6 Edinger Ave. 4 Single Family north 64.4 64.4 0.0 676 Edinger Ave. 5 Single Family north 547 64J 04 677 i Ave. 6 Single family north 711 71.8 01 74.7 Edinger Ave, 7 Snigle family north 67.6 67.8 0.2 70,6 Edinger Ave. 8 MMulti Farnity north 66,2 61 0_1 69.2 Edinger Ave. 9 North Centennial 59,5 59.2 -0.3 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0.0 55.0 Education Center 11 Swingle Family east 7_1.8 71.8 0,13 74.8 Fairview Street 12 Single Family east 71.3 71.3 k J Mid Basin Centennial Park Injec on 3 Well Project Final EIR 5-205 6-06 Section 5 With the construction of the sound walls the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 6.4 dB increase. As shown in Table 77, the well borehole drilling activities would not exceed the City's day time noise standard. Additionally, the well borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts Would be less than significant. Table 78: MBI-4 Borehole Drilling Night Time Noise Levels Receiver Fairview Street Existing ExIisting + rrtcrdese Thresbold 13 Single Family east 71.3 71.3 0,0 743 1 Fairview Street 34.6 36.3 1.7 50,0 14 Single Family east 71.4 71.4 0.0 74.4 2 Fairview Street 54.5 54.6 OA 57.5 15 North Godinez High 53,13 536 00 55.0 3 School 581 58.1 0.0 61.1 16 Northwest Mitchell 43,5 436 OA 55,0 4 School 57.0 57.0 0.0 60,0 17 North Heritage Museum 48.1 48.2 01 55.0 5 Structure 57.3 57.4 Q'i 603 18 South Godinez High, 43,3 433 O'c 55.0 6 School 64.3 64.4 0.1 67.3 19 Northwest Godinez 46.2 462 0.0 55.0 7 High School 602 I 0.5 63.2 I =City+ Noise Standard cr Amblent Noise level +3 do when Ambient above City Nalse, standard Bold =Exceeds Noise Standard Threshold With the construction of the sound walls the well borehole drilling activities would result in noise levels that would range from a 0.1 dB increase to a 6.4 dB increase. As shown in Table 77, the well borehole drilling activities would not exceed the City's day time noise standard. Additionally, the well borehole drilling activities would be conducted during the day when the construction activity would be exempt under the City's Noise Ordinance. Potential noise impacts Would be less than significant. Table 78: MBI-4 Borehole Drilling Night Time Noise Levels Receiver Description Existing ExIisting + rrtcrdese Thresbold Cion,stnul:416n 1 Multi Family west 34.6 36.3 1.7 50,0 Santa Ana River 2 Multi Family west 54.5 54.6 OA 57.5 Santa Ana River 3 Single Family north 581 58.1 0.0 61.1 Edinger Ave, 4 Single Family north 57.0 57.0 0.0 60,0 Edinger Ave, 5 Single Family north 57.3 57.4 Q'i 603 Edinger Ave. 6 Single family north 64.3 64.4 0.1 67.3 Edinger Ave. 7 Single family north 602 60.7 0.5 63.2 Edinger Ave, 8 Multi Family north 58,9 59,0 Edinger Ave.. Mid Basin Centennial Park Project Final EIR 5-206 Section 5 9 North Centennial 52.1 537 1.8 55. Education Center 10- Southeast Centennial 49.2 49,2 0,10 50,0 Education Center 11 Single Family east 66,7 667 0,10 69,7 Fairview Street 12 Single Family east - 66.3 6- 6.3 0. -0 -6-9.3 Fairview Street 73- Single Family east 663 66,3 0.0 69.3 Fairview Street 14 Single Family east 66,3 66.3 Q,() 69.3 Fairview Street 15 North Godinez High 48.4 48.4 0.0 50,0 School 16 Northwest M -tchell 37.4 37.6 0.2 50.0 School 17 North Heritage 42.9 43.2 0.3 50.0 Museum Structure 18 South Godinez High 382 38.2 0.0 50.0 School 19 Northwest Goclinez 35.3 359 0.1 50.0 l=Cily Noise 51andard ar Ambien I Noise level 3 dB WhIn Exisomg Noise Levels Above Cily Sian dwd Bold =E.c.,,J5 N01$F,H Strt ... Jad Thoeshnlci With the construction of the sound walls the construction activities would result in noise levels that would range from a 0.1 dB increase to a 1.7 dB increase. As shown in Table 78, the construction activities would not exceed the City's night time noise standard. Potential noise impacts would be less than signifiicant. Phase 7 Construction Activities Under Alternative 3 the project would include well equipping at MBI-4 without concurrent well equipping at MBI-2. All well equipping activities Would occur during the day. The noise levels created during the well equipping at MBl-4 are shown in Table 79, Table 79: Ml Well Equipping Day Time Noise levels Receiver Descill Existing ll Isting, + increase ' Threshold I Multi Family west Santa 41,8 41.11 C 0 55,0 Ana River 2 Multi Family west Santa 61,9 62.0 01 64.9 Ana River 3 Single Family north 65.6 65.6 0.0 68,6 Edinger Ave. -- 4 Single Family -milynort 64.4 64.4 01.0 87,6 Mid Basin Centennial Park Injection Well Project Final EIR 5-207 256 -308 Section 5 Well Redevelopment Activities Under Alternative 3, the noise levels created during well redevelopment activities are shown in Table 80. The well redevelopment activities would increase noise levels within the project area. As shown in Table 80, the well redevelopment activities would exceed the City's day time noise standard at Receptors 9, 10, 15, 16, 17, 18, and 19. All of the redevelopment activities would occur during the day when the well redevelopment activities would be exempt under the City's Noise ordinance. To minimize noise impacts the project has incorporated a design feature that would require the well redevelopment activities to occur when school is not in session. Potential noise impacts would be less than significant. Mid Basin Centennial Park �gtpn:ffiProject Final EIR 5-208 Edinger Ave. 5 Single Family north 64,7 647 00 677 Edinger Ave 6 Single family north 71 7 71.8 0.1 747 Edinger Ave. 7 Single family north 87.6 677 0.1 70.6 Edinger Ave. 8 Multi Family north 66.2 66.3 a 1 692 Edinger Ave. 9 North Centennial 59.5 59.1 -04 62.5 Education Center 10 Southeast Centennial 54.8 54.8 0 Education Center 11 Single Family east 71,8 71.8 0.0 74,8 Fairview Street 12 Single Family east 71.3 71.3 a 743 Fairview Street 13 Single Family east 713 71.3 0,0 743 Fairview Street - -- Single Family east 71A 71A 0 74.4 Fairview Street 15 North Godinez High 53.6 53.6 ELI G,O 55,0 [14 School 16 Northwest Mitchell 415 43.5 0,0 55.0 school 17 North Heritage Museum 4811 48.1 00 55.0 Structure 18 South Godinez High 433 43.3 0.0 55.0 School Northwest Godinez 462 46.2 0.0 55.0 High School 1 -City Noise Standard ur Ambient Nuse 1evW 13 din Wh ©n LvIslinq Ndise Levels Above City standard Bold =Excaeds Ncise standard Threshoid Well Redevelopment Activities Under Alternative 3, the noise levels created during well redevelopment activities are shown in Table 80. The well redevelopment activities would increase noise levels within the project area. As shown in Table 80, the well redevelopment activities would exceed the City's day time noise standard at Receptors 9, 10, 15, 16, 17, 18, and 19. All of the redevelopment activities would occur during the day when the well redevelopment activities would be exempt under the City's Noise ordinance. To minimize noise impacts the project has incorporated a design feature that would require the well redevelopment activities to occur when school is not in session. Potential noise impacts would be less than significant. Mid Basin Centennial Park �gtpn:ffiProject Final EIR 5-208 Section 5 Table 80: Operational Well Redevelopment Activities MB -2, MBI.3„ MBI -4, MBI -5, Monitoring Well Receiver Description Existing Existing k increase Threshold Construction 1 Multi Family west Santa 41.8 44.9 4.9 55,0 Ana River 2 Multi Family west Santa 61.9 62,1 0.2 64,9 Ana River 3 Single Family north 656 66.2 0,6 68.6 Edinger Ave. 4 Single Family north 64.4 66.2 1,9 67.4 Edinger Ave. 5 Single Family north 643 65,5 0.9 67.7 Edinger Ave. 6 Single family north 71.7 72.0 01.3 74.7 Edinger Ave. 7 Single family north 67.6 68.6 1.0 70.6 Edinger Ave. 8 Multi Family north Edinger 66.2 66.5 13 69.2 Ave. 9 North Centennial 59.5 63.3 3.8 62.5 Education Center 10 Southeast Centennial 54,8 56.6 1.9 55.0 Education Center 11 Single Family east 71.8 71.9 0.1 74.8 Fairview Street 12 Single Family east 71.3 71.6 0.3 74,3 Fairview Street 13 Single Family east 71.3 71.8 0.5 74.3 Fairview Street 14 Single Family east 71,4 71,6 0.2 74.4 Fairview Street 15 North Godinez High 53.6 56.1 2.5 55.0 School 16 Northwest Mitchell 415 61.9 18.4 55.0 School 17 North Heritage Museum 48.1 62.6 14.5 55.0 Structure 18 South Godinez High 43,3 52,3 22.7 55.0 School 19 Northwest Godinez. High 46.2 47.8 97 55.0 School 1 -0ity Noise Standard or Ambient Norse level Q ids when Existing Nolse Levds Above City Standard Sold =Excoeds Naive SlaMariJ ur,GslroAld Mid Basin Centennial Park Inje Lyon Well Project Final EIR 5-209 Section 5 Alternative 4: Pipeline Design Alternative Under Alternative 4 the same configuration of the four injection wells and monitoring well would occur. The noise levels generated from the construction and operation of the 'Injection wells and monitoring Would essentially be the same as the Proposed Project. Under Alternative 4, an alternative alignment for the water supply pipeline would be constructed that would extend near Santa Ana College Centennial Education Center and through two existing hall fields to MBI Well Site 2, Construction noise impacts would be similar to the Proposed Project. Potential construction noise impacts would be less than significant. Under Alternative 4 the well redevelopment activities and associated noise impacts would be the same as the Proposed Project. The well redevelopment activities would occur during the day when the construction activity would be exempt under the City's Noise Ordinance. To minimize noise impacts the project has incorporated a design feature that would require the well redevelopment activities to occur when school is not In session. Potential noise impacts would be less than significant. IMPACT N-1: Would the project expose persons to or generation of noise levels in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction related or operation, noise impacts occurring within the project area. The project area would continue to experience elevated levels of noise that would be in excess of the City Noise ordinance standards. Alternative 2: Proposed Project Under the Proposed Project, the four proposed injection wells and monitoring well would be located within underground Vaults. The operation of the injection wells and monitoring well would not emit any long term operation noise that would be in excess of City of Santa Ana noise standards. The construction operations for the Proposed Project would temporary increase noise levels within the project area and at land uses surrounding Centennial Park and the Heritage Museum. As shown in the noise analysis, with the incorporation of the sound walls and construction design features and compliance with the City's Noise Ordinance, construction related noise impacts generated from the Proposed Project would not expose sensitive receptors to noise levels in excess of City of Santa Ana noise standards. Mid Basin Centennial Park Project Final EIR 5-210 Section 5 Alternative 3: Reduced Intensity Alternative Under Alternative 3, the three proposed injection wells and monitoring well would Sae located within underground vaults. The operation of the injection wells and monitoring well would not emit any long term operation noise that would be in excess of City of Santa Ana noise standards. The construction operations for Alternative 3 would temporary increase noise levels within the project area. As shown in the noise analysis, with the incorporation of the sound walls and compliance with the City's Noise Ordinance, construction related noise impacts generated from Alternative 3 would not expose sensitive receptors to noise levels in excess of City of Santa Ana day noise standards. Alternative 4: Pipeline Design Alternative Under Alternative 4, the four proposed injection wells and monitoring well would be located within underground vaults. The operation of the injection wells and monitoring well would not emit any long term operation noise that would be in excess of City of Santa Ana noise standards. The construction operations for Alternative 4 would temporary increase noise levels within the project area. As shown in the noise analysis with the incorporation of the sound walls and compliance with the City's Noise Ordinance, construction, related noise impacts generated from Alternative 4 would not expose sensitive receptors to noise levels In excess of City of Santa Ana noise standards. Mitigation Measures N-1: The project will incorporate the noise reduction design features identified in the Mid Basin Centennial Park Injection Well Project EIR, Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with Mitigation Measure N-1. Alternative 3. Less than significant adverse impact with Mitigation Measure N-1. Alternative 4: Less than significant adverse impact with Mitigation Measure N-1, IMPACT N-2: Would the project result in a substantial temporary or periodic increase in ambient noise levels in the project vicinity above levels existing without the project? Alternative 1: No Federal Action/Nlo Project Under Alternative 1, the project construction activities and well redevelopment activities would not occur. There would not be any construction related temporary increases in the ambient noise level within the project area. Mid Basin Centennial Park I%&f 5-211 2 _ ffroject Final EIR Section 5 Alternative 2: Proposed Project As shown in the noise analysis, the construction activities associated with the Proposed Project would temporary increase ambient noise levels within the project at-ea. The increase in ambient noise levels would vary depending on the construction activity. With the incorporation of sound walls at the injection well sites, the majority of the noise increases would be less than 3 dB and would not be discernible to sensitive receptors in the project area. The most substantial temporary increases in ambient noise level Would be from the construction of the water supply/back flush pipeline along the Centennial Loop Road, the site improvements at Heritage Museum and during well redevelopment activities. To minimize noise impacts during these activities design features have been incorporated into the Proposed Project which would require the construction activity to occur at times when sensitive receptors are not present. With the incorporation of sound walls and design features into the Proposed Project and compliance with the City of Santa Ana Noise Ordinance temporary construction related increases in ambient noise level would be less than significant. Alternative 3: Reduced Intensity Alternative Under Alternative 3 one less injection well and a reduced amount of pipeline would be constructed. Even with less pipeline construction activity, the implernentation of the site improvements at the Heritage Museum and the injection well redevelopment activities wound still result in substantial temporary noise increases. Unlike the Proposed Project, Alternative 3 does not include any design features that would require these activities to occur when sensitive receptors are not present. The temporary construction related noise impacts tinder Alternative 3 would occur during periods when they would be exempt under the City's Noise Ordinance anclJor would not exceed the City Noise Ordinance Standards and Would be a less then significant impact. Alternative 4: Pipeline Design Alternative Under Alternative 4, the amount of construction activity and associated temporary construction related noise impacts would be similar to the Proposed Project and would be less than significant, Mitigation Measures Mitigation Measures N-1 required Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact with Mitigation Measure N-1. Mid Basin Centennial Park c Project Final ElR 5-212 Section 5 Alternative 3: Less than significant adverse impact with Mitigation Measure N-1 Alternative 4: Less than significant adverse impact with Mitigation Measure N-1 IMPACT N-3: Would the project result in a permanent increase in ambient noise levels in the project vicinity above levels existing without the project? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented, There Would no permanent increases to ambient noise levels within the project area and land uses surrounding the project area. The project area and surrounding land uses would continue to experience elevated levels of noise. Alternative 2: Proposed Project Under Alternative 2, the four proposed injection wells and monitoring well would be located within underground vaults. The operation of the injection wells and monitoring well would not emit any noise that would permanently increase arnbient noise levels within the project area. The maintenance of the wells would occur during the day over a two week period and would be conducted in accordance with the City of Santa Ana Noise Ordinance; There would not be a permanent increase in ambient noise levels within the project area. Potential long term noise impacts would be less than significant. Alternative 3: Reduced Intensity Alternative Under Alternative 3, the three injection wells and monitoring well Would be located within underground vaults. Similar to the Proposed Project, the operation and redevelopment of the injection wells and monitoring well would not permanently increase ambient noise levels within the project area. Potential long term noise impacts would be less than significant. Alternative 4: Pipeline Design Alternative Under Alternative 4, the four proposed injection wells and monitoring well would be located within underground vaults. Similar to the Proposed Project, the operation and redevelopment of the injection wells and monitoring well would not permanently increase ambient noise levels within the project area. Potential long term noise impacts would be less than significant. Mitigation Measures No Mitigation measures are required Level of Impact Alternative 1: No adverse impact Mid Basin Centennial Park rl- Project Final EiR 5-213 Section 5 Alternative 2: Less than significant adverse impact Alternative 3: Less, than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT N-4: Would the project expose persons to or generation of excessive groundborne vibration or groundborne noise levels? California Administrate Code 15000, Title 14 requires that all state and local agencies implement the California Environmental Quality Act (CEQA) Guideline, which requires an exposure analysis of persons to excessive groundborne vibration. Presently, the state or the City of Santa Ana has yet to quantify the level at which excessive groundborne vibration occurs, either any statute or other means. Several different methods are used to quantify vibration amplitude Such as the maximum instantaneous peak in the vibrations velocity, which is known as the peak particle velocity (PPV) or the root mean, square (rms) amplitude of the vibration velocity. Because of the typically small amplitudes of vibrations, vibration velocity is often expressed in decibels and is denoted as L, and is based on the rms velocity amplitude. A commonly used abbreviation is VdB, which in this text, is when L, is based on the reference quantity of one micro-inch persecond, Caltrans issued the Transportation and Construction Induced Vibration Guidance Manual in 2004. The manual provides practical guidance to Caltrans engineers, neers, planners, and consultants who must address vibration issues associate with the construction, operation and maintenance of Caltrans projects, The Guidance Manual establishes numeric thresholds for construction related and transportation related vibration impacts. The Guidance Manual determines that human response becomes distinctly perceptible at 0,04 inch per second PPV for continuous sources and 0.25 inch per second PPV for transient sources. Construction activity can result in varying degrees of ground vibration, depending on the equipment used on the site. Operation of construction equipment causes ground vibrations that spread through the ground and diminish in strength with distance. Buildings in the vicinity of the construction site respond to these vibrations with varying results ranging from no perceptible effects at the low levels to slight damage at the highest levels. Table 81 gives approximate vibration levels for particular construction activities for a wide range of sail conditions. As vibration waves propagate from a Source, the vibration energy decreases in a logarithmic nature and the vibration levels typically decrease by 6 LV per doubling of the distance from the vibration source. Mid Basin Centennial Park Injection Well Project Final EIR 5-214 25C-315 Section 5 Table 81: Vibration Source Levels for Construction Equipment Equipment Peak Particle Vetocfty (inches/seco2d) Approximate Vibration Level LV) at 25 feet Pile driver (impact) 1.518 (upper range) 0.644 (typical) 112 104 Pile driver (sonic) 0.734 upper range 0.170 typical 105 93 Clam shcve0 drop (slurry wall) 0.202 94 Hydromill (slurry wT11_) 0,008 in sell 0.017 in rock 66 75 _V_ibf atory -Roller 0,210 94 Hoe Ram 0,089 87 Large bulldozer 0o89 87 Caisson drill 0.089 87 Loaded trucks 0.076 86 Jackhammer 0,035 79 Small bulldozer 0.003 Source Transit Nuse and Vibration Irripact Assessopent, Federal Transit Admnistration, May 2006 Alternative 1. No Federal Action/No Project Under Alternative 1, none of the construction activities Would occur. There would be no potential that construction related vibration impacts could adversely impact structures within the project area. Alternative 2: Proposed Project To estimate vibration impacts the Federal Transit Administration's ground-borne vibration impact thresholds were used. A vibration impact will be considered significant if it results in construction impact of 0.25 inch per second or an operation impact of .04 inch per second. Table 81 in provides a list of construction equipment and potential levels of vibration. Of the equipment listed in Table 81, the caisson drill, which is similar to a drill rig, would be the piece of equipment that wound be utilized by the Proposed Project with the highest vibration level at 0,089 inch per second PPV at 25 feet. The calculated vibration levels that would be created by a drill rig operating at each well at the nearest sensitive receptor are shown in Table 82, Mid Basin Centennial Park Injection Well Project Final EIR 5-215 25C-316 Section 5 Table 82: Vibration Source Levels for Construction Equipment Location Distance to Nearest Vibration Levels at Nearest Receptor in Sensitive Receptor (feet) Peak Particle'Veloeftyl (Inctnes1socond► MBI-2 450 6.1704 MBI-3 210 6.009 MBi-4 190 0,010 M131-5 220 0.008 Monitoring Well 120 0.016 Caltrans Threshold for Transient Vibration Sources 0.25 Table 82 shows that the greatest level of vibration impacts would occur at sensitive receptors located near the Monitoring Well at the Heritage Museum with a vibration level of 0.01'6 inch per second PPV. This vibration level would be well within Caltrans 0.250 inch per second PPV threshold of perception for transient sources. Therefore, a less than significant vibration impact would occur from construction and operation of the Proposed Project. Alternative 3: Reduced Intensity Alternative Potential vibration impacts would be similar to the Proposed Project and would be less than significant. Alternative 4: IN peline Design Alternative Potential vibration impacts would be similar to the Proposed Project and would be less than significant. Mitigation Measures No Mitigation measures required Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact Mid Basin Centennial Park �tc&njl _ *Project Final EIR 5-216 Section 5 5.11 TRANS PORTATION/TRAFFIC The following analysis evaluates short term traffic impacts, long term traffic impacts and circulation constraints associated with the implementation of the Mid Basin Centennial Park Injection Well Project. Traffic and circulation impacts occurring within Centennial Park were evaluated by Urban Crossroads in September of 2015. The traffic analysis was performed in accordance with the City of Santa Ana General Plan Circulation Element, Guidelines for Traffic Impact Analysis Reports and the Orange County Congestion Management Plan. The Traffic Impact Report is presented in its entirety in Appendix I. 5.111.1 Affected Environment Existing Circulation System The primary roadways to access the project area are Edinger Avenue and Fairview Street. Presently, Edinger Avenue consists of 4 divided lanes and Fairview Street consists of 6 divided lanes along the frontage of the project area. Planned Circulation System Both Edinger Avenue and Fairview Street are designated as Major Arterials in the City's General Plan, Fairview Street is constructed to its ultimate width 3 through lanes in each direction Edinger Avenue currently provides 2 through lanes in each direction. Existing Traffic Counts An existing high school is located within the project area. To account for school related traffic patterns within the project area, the peak traffic periods were dentifiedas, AM (6:30 AM to 9:0,0 AM), Mid-day (2:00 PM to 4:00 PM) and PM (4:00 PM to 6:00 PM). The peak hour turning movement counts at study intersections were conducted in June 2015, when the schools were in session, The existing ACTT volumes on arterial highways and existing AM and PM peak hour intersection volumes throughout the study area are shown on Figure 25. Existing Intersection Operations Traffic operations are quantified through the determination of "Level of Service" (LOS). Level of Service is a qualitative measure of traffic operating conditions, whereby a letter grade "A" through "F" is assigned to an infrastructure facility (intersection, freeway mainline, or freeway ramp) representing progressively worsening traffic conditions. toI I Mid Basin Centennial Park 96f P 1 8- roject Final EJR 5-217 Section 5 Figure 25: Existing Traffic Volumes Mid Basin Centennial Park I n if i 11 Project, Final El R 5-218 �96- 9 Section 5 The existing peak hour traffic operations have been evaluated for the Study area intersections for AM, Mid-day and PM conditions, The existing intersection level of service of project area intersections are summarized in Table 83. The ICU analysis indicates all of the study area intersections are currently operating at LOS "D" or better during the AM, Mid-day and PM peak hours. Talble 83: Existing Intersection Conditions Intersection ICU ICU ICU LOS LOS LOS Acceptable 27,663 AM Mid- P1101 AM Mid-Day PM L6s C C D D Day Soulh at Centennial Road 42,350 .75 C D Mohawk/Edinger Ave, .69 52 .52 6 A A D Fairview St,/Centennial .67 .53 .54 B A A D Rd. L_cu lnwsec on C a par*v Uuu a, on LCS.Leve I Of SPNi GO Source Urban Crossroads Existing Roadway Operations The existing roadway segment LOS capacity analyses are summarized in Table 84. The daily analysis results indicate that all of the evaluated roadway segments are operating at LOS "C" or better. Table 84: Existing Roadways Volumesli-evel of Service Roadway Sooment Limits ADT VIC LOS Acceptable LOS Edinger Ave. West of Mohawk Dr- 27,663 0.74 C D Edinger Ave. Fairview St. East Mohawk Dr. North of Centennial Road 28,901 42,218 0.77 75 C C D D Fairview Sk. Soulh at Centennial Road 42,350 .75 C D Source: Urban Crossroads Existing Truck Routes Both Edinger Avenue and Fairview Street are designated as truck routes in the City's General Plan Circulation Element. Pedestrian and Bicycle Facilities Existing crosswalks are provided on three legs of the Mohawk Drive Y Edinger Avenue intersection (no crosswalk on east leg) and all four legs of the Fairview Street Y Centennial Road intersection. Pedestrian and bicycle counts conducted in June 2015 indicate considerable pedestrian and bicycle activity at the Fairview Mid Basin Centennial Park �1"&d'n I.IProject Final EIR 5-219 _ T2 Section 5 Street / Centennial Road intersection and lower pedestrian and bicycle activity at the Mohawk Drive / Edinger Avenue intersection. Transit The Project area is currently served by the Orange County Transportation Authority (OCTA) with bus service along Edinger Avenue (Route 463) and Fairview Street (Route 47). The closest bus stop is located on the south side of Edinger Avenue, east of the Edinger Avenue/Mohawk Drive entrance into Centennial Park, 5.11.2 Regulatory Framework Intersection Level of Service Per City of Santa Ana and County of Orange CMP traffic study guidelines, signalized study area intersections must be analyzed using, the Intersection Capacity Utilization (ICU) technique. To calculate an ICU value, the volume of traffic using the intersection is compared with the capacity of the intersection. ICU is usually expressed as a volume to capacity (V/C) ratio. The V/C represents that portion of the hour required to provide sufficient capacity to accommodate all intersection traffic if all approaches operate at capacity. The same LOS thresholds in terms of roadway segment V/C ratio and intersection ICU apply to both types of analysis, The V/C ratio (ICU) and corresponding Level of Service (LOS) are shown in Table 85, Table 85: Intersection Capacity Utilization (ICU) Level of Service Criteria The definitions of level of service for uninterrupted flow (flow unrestrained by the existence of traffic control devices) are: LOS "A"' represents free flow. Individual users are virtually unaffected by the presence of others in the traffic stream. Mid Basin Centennial Park Inn jec ion Well Project Final EIR 5-220 'A 6-3 21 Section 5 LOS "B" is in the range of stable flow, but the presence of other Users in the traffic stream begins to be noticeable. Freedom to select desired speeds is relatively unaffected, but there is a slight decline in the freedom to maneuver, LOS "C" is in the range of stable flow, but marks the beginning of the range of flow in which the operation of individual users becomes, significantly affected by interactions with others in the traffic stream. LOS "D" represents high-density but stable flow. Speed and freedom to maneuver are severely restricted, and the driver experiences a generally poor level of comfort and convenience. LOS "E" represents operating conditions at or near the capacity level. All speeds are reduced to a low, but relatively uniform value. Small increases in flow will cause breakdowns, in traffic movement. LOS "IF" is used to define forced or breakdown flow. This condition exists wherever the amount of traffic approaching a point exceeds the amount which can traverse the point. Roadway Segment Level of Service Roadway segment levels of service are estimated by comparing daily traffic volumes with the traffic volume capacity of the roadway based upon its functional classification. The daily traffic volume based LOS criteria (capacity values) obtained from the City of Santa Ana General Plan Circulation Element for the various types of roadway segments is shown in Table 86, The City of Santa Ana considers LOS "E", and "F" unacceptable for roadway segments. Therefore, for the purposes of environmental impact analysis, a project is considered to have a significant traffic Impact at an intersection if the LOS deteriorates from acceptable (i.e., LOS "l or better) to unacceptable (i.e., LOS "E" or "F") with the addition of project traffic, and the project contributes a 1 % or greater increase in the ICU value. Table 86: Level of Service Criteria Roadway Segments Arterial Lanes LOS-A LOS 4 LOS-0 LO$ LO$-F," LO$ P' Principal 6 -D 45,000 52,500 60,000 67,500 75,000 >75,000 Major 6-D 33,900 39,400 45,000 50,600 56,300 >56,300 Primary 4-D 22,500 26,300 30,000 33,800 37,500 >37,500 —Secondary Commuter 4-UD 2-UD 15,000 7,500 — 17,500 8,800 20,000 10,400 1 22,500 11,300 1 25,500 12,540 >25,000 ?12,500 Mid Basin Centennial Park �1,e&ffiProject Final EIR 5-221 Section 5 5.11.3 Thresholds of Significance 1. Would the project be in conflict with an applicable plan, ordinance or policy established measures of effectiveness for the performance of a circulation system, taking into all modes of transportation Including mass transit and non - motorized travel and relevant components of the circulation system, including but not limited intersections, streets, highways and freeways, pedestrians, bicycle paths and mass transit? 2. Would the project be in conflict with an applicable congestion management program, including but not limited to level of service standards and travel demand measures, or other standards established by the County's congestion management agency for designated roads or highways? 3. Would the project increase hazards to a design feature or incompatible uses or equipment? 4. Would the project result in inadequate emergency access? 5. Would the project be in conflict with adopted policies, plans or programs regarding public transit, bicycle or pedestrian facilities or otherwise decrease the performance or safety of such facilities? 5.11.4 Environmental Consequences IMPACT T -1: Would the project be in conflict with an applicable plan, ordinance or policy established measures of effectiveness for the performance of a circulation system, taking into all modes of transportation including mass transit and non - motorized travel and relevant components of the circulation system, including but not limited intersections, streets„ highways and freeways, pedestrians, bicycle paths and mass transit? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented, There would not be any short term construction traffic or long term operational traffic generated within the project area. There would be no change to existing traffic conditions within the project area. Alternative 2: Proposed Project Centennial Park Lang -Term Operational Traffic Impacts The long term operation of the Proposed Project would periodically require weekly backwashi,ng of the injection wells and redevelopment of the injection wells every three to five years. The long term operation would periodically generate a few traffic trips within the project area. The amount of traffic trips Mid Basin Centennial Park �Itgdn Project Final EIR 5 -222 Section 5 generated from the backwashing and well redevelopment activities would be minimal and would occur outside of peak traffic periods. The long term operational traffic impacts generated from the Proposed Project would be less than significant, Centennial Park Short-Term Construction Traffic Impacts The construction activities associated with the Proposed Project would generate short term construction traffic within the project area. Short term traffic would occur from construction equipment mobilization and demobilization activities, worker traffic and from truck deliveries to the project site. To minimize potential construction traffic, all of the construction traffic entering Centennial Park would utilize the Edinger Avenue/Mohawk Drive entrance. A summary of the trips generated from the construction of the Proposed Project is shown in Table 87. Table 87: Centennial Park Construction Traffic Trips Trips AM In AM Out TOW p1m to PM out Total' Dpjky Passenger cars 10 0 10 0 10 10 20 Light Trucks 6 0 6 0 6 6 12 Heavy Trucks 18 0 18 0 is 18 36 Total 28 0 28 0 28 28 56 Sourrei Urban Crossroads Intersection Analysis To evaluate the Proposed Project traffic trips on the project area intersections, project traffic plus cumulative traffic from future development project projects plus an ambient traffic trip growth factor of 6% (2% per year during construction period from 2016 to 2019) was added to the project area circulation system. Additionally, because the construction of the proposed pipeline along Edinger Avenue could require a temporary lane closure, a closed lane condition was factored into the analysis. As shown in Table 88, with the Proposed Project construction traffic, under both an open and closed lane condition, all intersections would operate at acceptable LOS (LOS D or Better). The potential short term construction traffic impacts on project area intersections would be less than significant. Mid Basin Centennial Park j"c &nfiil Project Final EIR 5-223 4 Section 5 Table 88: Existing Plus Project Traffic Intersection Analysis Intersection E E E E E E E+P E+P E+P E+P E+P E+P Acceptable 27,691 ICU ICU ICU LOS LOS LOS ICU ICU ICU LOS LOS LOS LOS North of Centennial Road AM Ma PM AM MD PM AM MO PM AM MD PM Mohawk/Edinger .69— 52 .52 B A A .70 .53 .53 C A A D Mohawk /Edinger .82 .57 .57 D A A D Ave, with Potential Lane Closure Fairview 67 .53 .54 B A A 67 .53 .56 B A A D St./Centennial Rd. E=Existinq, E+P- ExpsUng Plus Project Roadway Segment Analysis To evaluate the Proposed Project traffic trips on the project area roadway system, project traffic, cumulative traffic from future development project projects plus ambient traffic trip growth factor of 6 % was added to the project area circulation system. As shown in Table 89, with the Proposed Project construction traffic all project area roadway segments would operate at an acceptable LOS. The potential short term construction traffic impacts on project area roadways would be less than significant. Table 89: Existing Plus Project Traffic Roadway VolumelCapacity Analysis Ro6dway $99ment'Llmits ALIT VIC LOS ADT 'VIC I LOS Acceptable LOS Edinger Ave West of Mohawk Dr, 27,663 0.74 C 27,691 0 74 C D Edinger Ave, East Mohawk Dr. 28,901 077 C 28,929 077 C D Fairview St, North of Centennial Road 42,218 I .75 C 42,232 075 C D I Fairview St, South of Centennial Idoad 42,350 .75 I C I C D Heritage Museum "Long - Term /Short -Term Traffic Impacts The long term operation of the monitoring well at the Heritage Museum Would require monthly visits from OCWD to conduct water quality and water depth sampling. Additionally, every three to five years OCWD would conduct maintenance activities to redevelop the monitoring well. The water quality Mid Basin Centennial Park 2j5G-u329:',ojec1 Final EIR 5-224 Section 5 sampling and redevelopment activities would only involve the use of light weight trucks and a few pieces of construction equipment and would generate minimal amount of traffic trips Outside of the peak traffic periods- The potential long term operational traffic impacts on project area roadways and intersections would be less than significant. The construction operations for the monitoring well would involve the mobilization and demobilization of construction equipment to the project site. The mobilization and demobilization activities would only in few pieces of equipment would Occur outside of the peak hour traffic periods. The potential short term construction traffic impacts on project area roadways and intersections would be less than significant. Alternative 3: Reduced Intensity Alternative Under Alternative 3, one less injection welt and a reduced arriount of pipeline Would be constructed. Compared to the Proposed Project, there would be slightly less construction traffic generated within the project area. Similar to the Proposed Project, the implementation of Alternative 3 would not result significant long term operation or short term construction traffic impacts to project area intersections or roadway segments. Alternative 4: Pipeline Design Alternative Under Alterative 4, the mix of construction equipment and construction activities would essentially be the same as the Proposed Project. Similar to the Proposed Project, the implementation of Alternative 4 would not result significant long term operation or short term construction traffic impacts to project area intersections or roadway segments. Mitigation Measures No mitigation measures are required. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant adverse impact Alternative 3: Less than significant adverse impact Alternative 4: Less than significant adverse impact IMPACT T-Z Would the project be in conflict with an applicable congestion management program, including but not limited to level of service standards, and travel demand measures, or other standards established by the County's congestion management agency for designated roads or highways? Mid Basin Centennial Park 260.vMProject Final EIR 5-225 Section 5 Alternativel : No Federal Action/N'o Project Under Alternative 1, the project would not be implemented. There would riot be any additional short term construction traffic or long term operational traffic generated within the project area that could potentially be in conflict with the County of Orange Congestion Management Plan, Alternative 2- Proposed Project The Orange County Transportation Agency is responsible for the implementation of the County of Orange Congestion Management Program (CMP), The CMP is designed to reduce traffic congestion and to provide a mechanism i for the coordination of land use and transportation decisions. When a project generates more than 100 peak trips along a CMP highway or 51 or more trips through a CMP intersection, the project would be required to prepare a traffic impact study to evaluate the impacts on the CMP highway and intersection. There are no CMP intersections or CMP highways within the immediate vicinity of the project area. Therefore, the Proposed Project would not be directly generating traffic onto a CMP intersection or CMP highway, However, there is the potential that some traffic: Could utilize CMP highways or intersection from other areas in the County to travel to the project site. As shown in Table 87 the short term construction traffic generated from the Proposed Project would not exceed 100 peak trips along a CMP highway or 51 or more trips through a CMP intersection. No potential conflicts with the County of Orange Congestion Management Program would occur. Heritage Museum The construction and operation of the monitoring well would only generate a few trips and would not exceed the 100 peak trips along a CMP highway or 51 or more trips through a CMP intersection threshold. Therefore potential conflicts with the County of Orange Congestion Management Program would not occur. Alternative 3: Reduced Intensity Under Alterative 3, there would be slightly less construction traffic generated, compared to the Proposed Project. Similar to the Proposed Project, Alternative 3 would not generate over a 100 peak trips along a CMP highway or 51 or more trips through a CMP intersection. Potential conflicts with the County of Orange Congestion Management Program would not occur. Alternative 4: Pipeline Design Alternative Under Alterative 4, the mix of construction equipment and construction activities would essentially be the same as the Proposed Project- Similar to the Proposed Project, Alternative 4 would not generate over 100 peak trips along a CMP Qo Mid Basin Centennial Park Mz15C -OL-froject Final EIR 5-226 -11312 Section 5 highway or 51 or more trips throi.rgh a CMP intersection. Potential conflicts with the County of Orange Congestion Management Program would not occur. Mitigation Measures No mitigation measures are required. Level of Impact Alternative 1: No adverse impact Alternative 2: No adverse impact Alternative 3: No adverse impact Alternative 4: No adverse impact IMPACT T-3: Would the project increase hazards to a design feature or iincompatible uses or equipment? The construction of the Proposed Project would require temporary lane closures along Edinger Avenue, Edinger Avenue/Mohawk Drive entrance to Centennial Park and along the Centennial Park Loop Road. The temporary lane closures could affect existing circulation patterns within and outside of Centennial Park, including access to Godinez High School parking structure and to student drop off areas. Additionally, construction activities that would occur withrin Centennial Park near Godinez High School Could result in student/ pedestrian construction equipment safety conflicts. The construction activities would also result in the temporary loss of parking area within Centennial Park, Alternativell: No Federal ActionlNo Project Under Alternative 1, the project would not be implemented. There would not be any construction activities that would require temporary lane closures along Edinger Avenue, Edinger Avenue/Mohawk Drive entrance and along the Centennial Park Loop Road. Additionally, no potential student/ pedestrian construction vehicle safety conflicts or temporary loss of parking at Centennial Park would occur. Alternative 2: Proposed Project Edinger Avenue Lane Closure The water supply pipeline to the injection wells would be constructed beneath the south shoulder of Edinger Avenue, The construction activities would require temporary travel lane closure along Edinger Avenue between just west of the Edinger Avenue Bridge to the Edinger Avenue/Mohawk entrance into Centennial Park. The temporary closures would be for approximately 20 days. A traffic impact analysis was conducted under a closed travel lane condition along Mid Basin Centennial Park IALql',-Project Final EIR 5-227 Section 5 Edinger Avenue. As shown in Table 88 with a closed travel lane Edinger Avenue would continue to operate at an acceptable level of service. To ensure safe vehicle access along Edinger Avenue when lane closures are occurring, a traffic manageir-nent program would be implemented that would include a combination of signage and traffic control devices to warn motorist of the temporary closures and to direct traffic safely into the park. With the implementation of Mitigation Measure T-1 potential circulation conflicts with the temporary travel lane closure along Edinger Avenue would be reduced to a less than significant level, Centennial Park Loop Road Lane Closure The Centennial Park Loop extends from the Fairview Street/Centennial Road entrance to it terminus near Parking Lot 1 near the Godinez High School parking structure. Presently, the segment of the loop road that extends through Godinez High School is gated providing no vehicle access. The loop road provides access for park users and Santa Ana College students and staff to parking areas in Centennial Park and is the only roadway for students and staff to the Godinez High School parking structure. The alignment of the water supply pipeline and back flush pipeline would follow the loop road and the Construction of the PipdirleS Would require temporary closure of segments of the loop road. A review of AM peak hour traffic movements shows that approximately 540 vehicles would be expected to utilize the segment of the loop road between the Edinger Avenue/Mohawk park entrance and Parking Area 1. Of the total amount of vehicle trips traveling along the loop road, approximately 378 vehicles (70%) of the vehicle trips would be expected to travel to the Godinez High School parking structure and 162 (30%) would expected to travel to parking areas near the Santa Ana College Centennial Education Center. To maintain circulation to the Godinez High School parking structure and to the parking areas in Centennial Park, the pipeline construction along the loop road would occur at night when the park would be closed for vehicle traffic. The segments of the Centennial Park Loop Road that are under construction would be covered with a metal plate each night to allow for access during the day. With the implementation of Mitigation Measure T-2 potential Circulation conflicts associated with the temporary closure of segment of the Centennial Park Loop Road would be reduced to a less than significant level. Godinez High School Circulation Impacts Godinez Highway is located immediately southwest of Centennial Park. The high school contains approximately 2,600 Students and 130 teachers and support staff. The high school operates on a traditional calendar beginning at 8:00 am and concluding at about 3:00 pm. The primary vehicle access to Godinez High School is provided frorn Fairview Street/Centennial Road entrance and Mid Basin Centennial Park CrAvn roject Final FIR 5-228 2juto -121YIP Section 5 secondary from Edinger Avenue/Mohawk Drive entrance into Centennial Park. As shown in Figure 26 Godinez High School has two onsite parking facilities, a surface parking lot located south of the baseball field and a parking structure. The access to the surface parking lot near the ball fields would be from Centennial Road. The Proposed Project would not involve construction activities along Centennial Road that would adversely impact the surface parking lot near the ball fields. All construction equipment access to Centennial Park would be from the Edinger Avenue/Mohawk Drive entrance. The access to Godinez High School parking structure would be from the Centennial Park Loop Road. During the day vehicle access would be maintained along the loop road to provide access to and from the parking structure. Implementation of the Proposed Project would not result in significant adverse circulation impacts to Godinez High School parking facilities. As shown in Figure 26 Godinez has three student drop-off areas; Centennial Road Student Drop-Off, Parking Area 1 Student Drop-Off and the Parking Area 2 Student Drop-Off. Centennial Road Student Drop-Off The majority of the student drop-offs occur at the Centennial Road drop-off, During drop-off periods vehicles travel west bound along Centennial Road to the Godinez High School surface parking lot, drop-off students, loop around the parking lot and travel eastbound on Centennial Road to Fairview Street, The Proposed Project would riot involve construction activities along Centennial Road that would adversely impact student drop-off activities, Parking Area I Student Drop-Off The access to the Parking Area 1 Student Drop-off would be from the Centennial Loop Road. During the day vehicle access would be maintained along the loop road to provide access to and from the Parking Area 1 Student Drop-Off, Parking Area 2 Student Drop-Off The Parking Area 2 Student Drop-Off is the least utilized drop-off, with only a few drop offs occurring daily. Access to the Parking Area 2 Student Drop-Off would be from the Centennial Loop Road. Vehicles would travel northbound on the loop road and enter into Parking Area 2 to drop off students, exit the parking lot and proceed northbound to the Edinger Avenue/Mohawk Drive entrance. During the construction period when the injection well is being constructed at Parking Area 2, there would not be sufficient space to drop-off students. During the period when construction activities are occurring the student drop off would be temporarily relocated to a turn-around located just north of the skate park. Traffic control devices and signage would be provided to direct vehicles to the turn Q Mid Basin Centennial Park 2j&CLiY4 Project Final EIR 5-229 �) *J*Jb Section 5 around. With the implementation of Mitigation Measure T-3 potential Circulation impacts to the Parking Area 2 Student Drop Off would be reduced to a less than significant level. StudentlPedestrian Construction Vehicle Safety Conflicts Under a joint agreement between City of Santa Ana and Santa Ana Unified School District, Godinez High School is allowed to utilize the athletic facilities and open space areas in Centennial Park for physical education classes and for after school sports programs, The proposed injections wells and supporting pipeline would be located underground and would not cause any potential long term conflicts with open space recreation activities at Centennial Park. During construction operations heavy equipment would be operating within Centennial Park. The construction activity and construction equipment would be fenced off to avoid potential student/pedestrian conflicts during construction. Additionally, flag men would be utilized to direct pedestrians away from construction activities. Prior to start of construction a safety plan would be prepared that would contain measures to avoid student/pedestrian conflicts with construction activities. With the implementation of Mitigation Measure T-4 potential student/pedestrian conflicts Would be reduced to a less than significant level Parking Impacts Centennial Park Centennial Park provides onsite parking for park users and for students and staff of Santa Ana College Centennial Education Center, Godinez High School provides its own onsite parking for students, teachers and support staff. The implementation of the Proposed Project would not displace any parking facilities at Godinez High School. As shown in Figure 27 the well construction activities at Centennial Park would temporary displaces parking spaces in Parking Areas 1, 2, 4 and 5- To minimize temporary parking impacts, the size of the work area at each parking area would be reduced after the well drilling and well construction and development phases are completed and when well equipping occurs. The potential temporary parking impacts occurring at each parking area during the well drilling/construction/development phases and well equipping phases is shown in Figure 28 and summarized in Table 90. As shown in Table 90 a total of 145 parking spares would be temporarily displaced during well drilling /construction /development phases and 48 parking spaces during well equipping phase. Mid Basin Centennial Park 2jsV Vroject Final EIR 5-230 Section 5 Figure 26: Godinez High School Parking Facilities and Student Drop Offs Mid Basin Centennial Park��cjipn Project Final EIR 5-231 Section 5 Figure 27: Temporary Parking Impacts Mid Basin Centennial Park 1-je&nfijProject Final EIR 5-232 Section 5 Figure 28: Areas of Temporary Parkiing Impacts Mid Basin Centennial Park 211 igp;�on 11 Project Final EIR 5-233 5C fu Section 5 Table 90: Parking Impacts during Well Drill inglConstructiion Activities and During Well Equipping Activities Parking Area Available Parking Spaces Reduced Spaces During Drill InglDonstruction Net Available Spaces During DrillinglOonsttuctkrn Reduced Spaces During Well Equipping NetSp!aces Available During i Well Equipping 1 132 52 80 14 118 2 32 1 20 12 10 22 3 85 0 86 0 86 4 322 42 280 12 310 5 145 31 114 12 133 C3verall 717 145 572 48 669 Centennial Park Parking Survey A parking utilization survey was prepared to estimate potential temporary parking impacts that could occur during construction when the parking areas are being utilized on the weekdays during the school year and on weekend by park users. Weekday Parking Survey A weekday parking survey was conducted during the 2015 school year on April 14, 15, 20 and May 18 during peak school hours between 9:00 am and 12:00 noon to help estimate parking demands during the weekday. Table 91 identifies the average parking occupancy at each parking area over the four day survey period and the estimated amount of parking that would be available if well drilling/construction/development activities would be occurring. Table 92 estimates the amount of parking that would be available if well equipping activities wound be occurring,. Table 911: Weekday Available Parking with Well Drilling and Well Construction Activities Parking Area Available Parking Spaces (I) Averaga Occupancy Surplus S aces (2)Maxlmurn Reduced Spaces 1 Net Available parking i 1 132 17 115 52 +63 2 32 23 9 20 -11 3 86 82 4 0 +4 4 322 313 9 42 -33 5 145 115 30 31 -1 (1V -AVeri po we A day swrvey pened I'21 Assumes MP tmuwm Raduoed Parkin, dun Well OrWiri IConslmckin PNas Mid Basin Centennial Park �,6tn 6Project Final EIR 5 -234 Section 5 Table 92: Weekday Available Parking with Well Equipping Activities Parking Area Available Parking S' acces (1), Average Occupancy surplus Spaces (2)Maxlmum Reduced Spaces Not Available parking - 1 132 17 115 14 +101 2 32 23 9 10 -1 3 86 82 4 0 +4 4 322 313 9 12 1 -3 5 145 115 30 __+4,18 t12 WDIWC (I A,er.ged over 4 d., eurvrep period r2) As,n,,,s lvlgelirlun R,,fteed Pwk ... i,lurin Well Phase Table 91 and 92 show that there would be a shortage of parking spaces at Parking Areas 2, 4 and 5. The well drilling/well construction/development and well equipping activities would be phased at different locations and at different times of the year to free up available parking at other parking areas. Table 93 identifies the time of year where a specific type of construction activity would occur. Table 93: Well Construction Phasing Month Parking Parking Parking Parking Parking Occurring Area 1 Area 2 Area I Area 4 Area 5 Date Dec-Jan WDIWC 2018 Jari-Feb WDV WDIWC 2018 Mar-Apr WD/WC WDV 2618 Apr May WDV WD/WIC 2018 Jun-July WDV 2018 July-Oct WE WE 2018 Oct -Jan WE WE 2019 Aodwijes Usted in same row are arcurfing cmcutrerrry WD= Welling Oulling '1.5 maaths WC' -Well Cnnslrrfion 1.5 months oVDV4Vell Development 1.5 rionths WE-Wefl Egmpping 3 months j Mid Basin Centennial Park lugenfleroject Final EIR 5-235 Section 5 Parking Area 2 At Parking Area 2 during well drilling and well construction activities there would be shortage of 11 parking spaces for approximately 90 days During the period when well drilling and well construction activities are occurring in Parking Area 2 there would not be any construction activity occurring in any of the other parking areas, The parking availability data shown in Table 91 suggest that parking would be available in the other parking areas to make Lip for shortage of parking at Parking Area 2, During well equipping activities there would be shortage of 1 parking space. The data in Table 92 Suggest that parking would be available in the other parking areas to make up for shortage of parking at Parking Area 2. Parking Area 4 At Parking Area 4 there would be a shortage of 33 parking spaces during well construction and well development activities for 90 days, During the period when well drilling activities are occurring in Parking Area 4 well development Would be occurring in Parking Area 1 . The parking availability utilization data in Table 91 suggest that even with reduced parking in Parking Area I and Parking Area 4 there would still be available would available parking. The well drilling /construction /development activities at Parking Area 4 would occur at the end of the school year and over the summer months when there would be less demand for parking. During well equipping there would be a shortage of 3 parking spaces. During the period when well equipping activities are occurring in Parking Area 4 well equipping would also be occurring in Parking Area 1.The parking utilization data in Table 92 suggest that there would available parking in other parking areas to make up for shortage of parking at Parking Area 4. Parking Area 5 At Parking Area 5 there would be a shortage of 1 parking space during: well drilling and well construction activities for 90 days, During the period when well drilling and well construction activities are occurring in Parking Area 5 well development would be occurring in Parking Area 1. During this period when the activities are occurring concurrently there would be a shortage of 12 parking spaces. The parking utilization data in Table 91 suggest that there would be available parking at other parking areas to make up for shortage of parking occurring at Parking Area 5. Mid Basin Centennial Park I reject Final EIR 5-236 -'If JF Section 5 Weekend Parking Survey A weekend parking survey was conducted at Centennial Park on June 13, 2015 from 9:00 am to 4 pm. Hourly parking counts were counted for each parking section to determine occupancy. As shown in Table 94, there was surplus of parking available for park users. The construction operations for the Proposed Project would temporarily displace some parking spaces. Table 94 shows the amount of parking that would be available at each parking area when construction activity would be occurring based on the maximum occupancies identified in the weekend parking analysis. Even though there would be reduced parking available at some parking lots, there would still! be an overall surplus of parking at Centennial Park when construction activities are occurring to meet park user parking demands. Potential weekend parking would be less than significant. Table 94: Summary Weekend Parking Impacts Parking Area Available Parking Spaces MaxImum, Occupancy surplus Spaces Reduced Spaces From �Consiructlorlr Activity Not Parking AvalliNe 1 132 45 87 52 35 2 32 23 9 20 -11 3 86 19 67 0 67 4 322 30 1 292 1 42 1 250 5 145 112 33 311 2 Overall 717 196 488 145 343 Centennial Park Parking Area Circulation The parking analysis has identified that there would be available parking within Centennial Park when well drilling/construction/development activities and well equipping activities are occurring. There could be instances where the available parking could be located in more distant parking areas that what would typically be used. To avoid potential adverse circulation impacts from vehicle searching for parking, a signage program would be implemented that would identify parking lots where construction activity is not occurring and where there would be available parking. Within the implementation of Mitigation Measure T- 5 potential circulation impacts within parking areas under construction would be reduced to less than significant. Mid Basin Centennial Park �961- nT 11 Project Final EIR 5-237 18F Section 5 Parking Impacts Heritage Museum The monitoring well at the Heritage Museum would be located with an existing parking area. The monitoring well would be underground and would not result in the permanent loss of any parking area or create any potential vehicle hazards. During construction of the monitoring well there would be some temporary loss of parking. The construction period Would be for approximately two months and would be planned to occur during times of the year when there would be less parking demands at the Heritage Museum. The temporary loss of parking would be a less then significant impact. Alternative 3: Reduced Intensity Alternative Under Alternative 3, Injection Well MBI-2 would not be constructed. There would not be any temporary parking impacts occurring at Parking Area 1. Additionally, there would be more available parking to make up for the parking shortages occurring in the other parking areas when construction activities are occurring. Compared to the Proposed Project potential temporary parking impacts would be less. Under Alternative 3, the segment of the water supply pipeline west of the Edinger Avenue /Mohawk Drive entrance would not be constructed. Therefore, no temporary closure of Centennial Loop Road south the Edinger Avenue/Mohawk Drive entrance would be needed and there would be no vehicle access constraints to the Godinez High School parking structure or to the Parking Area I Student Drop-Off. Because under the Proposed Project the pipeline construction would occur during the evening and the Centennial Loop Road would be accessible during the day, the level of potential circulation impacts to the Godinez High School parking structure and to the Parking Area 1 Student Drop- off would be similar. With the implementation of Mitigation Measures T-1, T-2, T- 3, T-4 and T-5 potential adverse circulation impacts would be reduced to less than significant. Alternative 4: Pipeline Design Alternative Under Alternative 4, temporary parking impacts would be similar to the Proposed Project. As the parking survey suggests there would available parking to make up for parking shortages when construction activities are occurring within Centennial Park. Under Alternative 4, the segment of the water supply pipeline west of the Edinger Avenue/Mohawk Drive entrance would not be constructed. Therefore, no temporary closure of Centennial Loop Road south the Edinger Avenue/Mohawk Drive entrance would be needed and there Would be no vehicle access constraints to the Godinez High School parking structure or to the Parking Area 1 Mid Basin Centennial Park &nfi6iProject Final EiR 5-238 2 Section 5 Student Drop-Off. Because under the Proposed Project the pipeline construction would occur during the evening and the Centennial Loop Road would accessible during the day, the level of potential circulation impacts to the Godinez High School parking structure and to the Parking Area 1 Student Drop-Off would be similar. With the implementation of Mitigation Measures T-11, T-2, T-3, T-4 and T- 5 potential adverse circulation impacts would be reduced to less than significant. Mitigation, Measures T-1: Prior to start of pipeline construction activities along Edinger Avenue a 'Traffic Management Plan will be prepared and approved by the City of Santa Ana. The Traffic Management Plan will include traffic control devices and signage to avoid vehicle and pedestrian conflicts from the temporary closing of Edinger Avenue. T-2: Pipeline construction along the Centennial Loop Road will be conducted during the night time hours. Steel plates will be placed over exposed trenches at the end of the work activities to allow vehicle access during the day. T-3: A Traffic Control Plan with traffic control devices and signage will be implemented at Parking Area 2 directing student drop-offs to the turn-around located north of the Centennial Skate Park, T-4: A Construction Safety Plan will be prepared and implemented that will include fencing around all work areas to prevent public access and the use of flag men to direct students and pedestrians from construction equipment and activities. T-5: During construction activities a signage program will be implemented that identify parking lots where construction activity is not Occurring where parking is available. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant impact with Mitigation Measures T-1, T-2, T-3, T-4 and T-5. Alternative 3: Less than significant impact with Mitigation Measures T-1, T-2, T-3, T-4 and T-5. Alternative 4: Less than significant impact with Mitigation Measures T-1, T-2, T-3, T-4 and T-5. Mid Basin Centennial Park jgq&nJ1 , _ 46Project Final EIR 6-239 Section 5 IMPACT T-3: Would the project result in inadequate emergency access? Alternativel: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction activities that would require temporary lane closures along Edinger Avenue, Edinger Avenue/Mohawk Drive entrance and along the Centennial Park Loop Road that could impact emergency access to Centennial Park, Alternative 2: Proposed Project Under Alternative 2, segments of Edinger Avenue and the Centennial Loop Road would be temporary closed to allow for pipeline construction. The temporary closure along Edinger Avenue would be for approximately 20 days and traffic control devices would be in place to ensure the emergency access would be maintained at all: times. During the day the Centennial Loop Road would be accessible at all times in the event emergency access is required. During the evening some segments of the Centennial Loop Road would be closed for vehicle traffic. In the event an emergency occurs a steel plate Would be placed over the pipeline trench to allow for emergency vehicle access. A Traffic Management Plan would be prepared that would ensure that emergency access is maintained at all times. With the implementation of Mitigation Measure T-1 potential adverse emergency impacts Would be reduced to less than significant. Heritage Museum The construction and operation of the monitoring well would not involve the construction of any structures or involve any activities that would impede emergency access to the site. Alternative 3: Lower Intensity Alternative Under Alternative 3, Injection Well MBI-2 and the pipeline under Centennial Loop Road Would not be constructed. Therefore, there would be no temporary closures along segments of the Centennial Loop Road. Similar to the Proposed Project emergency access would be maintained at all times. Compared to the Proposed Project potential emergency access impacts would be similar. With the implementation of Mitigation Measure T-1 potential adverse emergency impacts would be reduced to less than significant. Alternative 4: Pipeline Design Alternative Under Alternative 4, the pipeline under Centennial Loop Road would not be constructed. Therefore, there would be no temporary closures along segments of the Centennial Loop Road. Similar to the Proposed Project emergency access would be maintained at all times. Compared to the Proposed Project potential Mid Basin Centennial Park Ace-314 Project Final EIR 5-240 Section 5 emergency access impacts would be similar. With the implementation of Mitigation Measure T-1 potential adverse emergency impacts would be reduced to less than significant. Mitigation Measures Mitigation Measure T-1 is required, Level of Impact Alternative 1: No adverse impact Alternatilve 2: Less than significant impact with Mitigation Measure T-1 Alternative 3: Less than significant impact with Mitigation Measure T-1. Alternative 4: Less than significant impact with Mitigation Measure T -1, IMPACT T-4: Would the project be in conflict with adopted policies, plans or programs regarding public transit, bicycle or pedestrian facilities or otherwise decrease the performance or safety of such facilities? Alternative 1: No Federal Action/No Project Under Alternative 1, the project would not be implemented. There would not be any construction activities that would require temporary closures of pedestrian sidewalks and bike ways along Edinger Avenue. Alternative 2: Proposed Project Presently, along the south side and north side of Edinger Avenue is a Class 11 on street bike lane and a pedestrian sidewalk. The implementation of the Proposed Project would require the temporary closure of the bike lane and sidewalk along Edinger Avenue, approximately west of the Edinger Avenue Bridge to the Edinger Avenue/Mohawk Drive entrance into Centennial Park. To ensure safe pedestrian safety, a traffic management program would be implemented that would include a combination of signage and traffic control devices to warn pedestrians of the temporary closures and to direct bicyclist and pedestrians to the bicycle and pedestrian facilities located on the north side of Edinger Avenue. With the implementation of Mitigation Measure T-1 potential pedestrian conflicts would be reduced to a less than significant level. Heritage Museum The construction and operation of the monitoring well would not require the closure or relocation of existing pedestrian, bicycle or transit facility, o ' 4 ) Mid Basin Centennial Park �j en Yroject Final EIR 5-241 4 e - Section 5 Alternative 3: Lower Intensity Alternative Under Alternative 3, there would be temporary closure of the bike lane and sidewalk along Edinger Avenue. Compared to the Proposed Project potential impacts would The similar and with the implementation of Mitigation Measure T-1 potential pedestrian conflicts would be reduced to a less than significant level. Alternative 4: Pipeline Design Alternative Under Alternative 4, there would be temporary closure of the bike lane and sidewalk along Edinger Avenue. Compared to the Proposed Project potential impacts would be similar and with the implementation of Mitigation Measure T-1 potential pedestrian conflicts would be reduced to a less than significant level. Mitigation Measures Mitigation Measure T-1 is required. Level of Impact Alternative 1: No adverse impact Alternative 2: Less than significant impact with Mitigation Measure T-1 Alternative 3: Less than significant impact with Mitigation Measure T-1, Alternative 4: Less than significant impact with Mitigation Measure T -1. �J Mid Basin Centennial Park �1 nf4yroject Final EIR 5-242 ed- Section 6 6.1 CEQA Analysis Requirements A cumulative impact refers to, when two or more individual effects, which when considered together, are considerable or which compound or increase other environmental impacts. The CEQA Guidelines require that an EIR discuss the cumulative impacts of a project when a project's incremental effect is cumulatively considerable, meaning that a projects incremental effects are considerable when viewed in connection with the effects of past, current and probable future projects. According to the CEQA guidelines Section 15130(a) and (b) the purpose of this section is to provide a discussion of significant cumulative impacts which reflects the severity of the impacts and their likelihood of occurrence. The CEQA Guidelines indicate that the discussion of cumulative impacts should include: • Either (1), a list of past, present and probable future projects producing related or cumulative impacts or (B), a summary of projections contained in an adopted general plan or similar document, or in an adopted or certified environmental document which describe or evaluated conditions contributing to a cumulative impact', • A discussion of the geographic scope of the area affected by the cumulative effect, • A summary of expected environmental effects to be produced by these projects,, • Reasonable and feasible options for mitigating or avoiding the project's contribution to any significant cumulative effects. 6.2 NEPA Analysis Requirements Under NEPA, a cumulative impact is an impact on the environment which results from the incremental impact of the action when added to other past, present and reasonably foreseeable future actions. Cumulative impacts could result from individually minor, but collectively significant, actions taking place over time, 6.3 Cumulative Analysis Methodology In accordance with CEQA and NEPA requirements the cumulative analysis for the Mid Basin Centennial Park injection Well Project is based on the following„ a list of foreseeable future development projects occurring in the City, land use projections from the City of Santa General Plan and demographic projections from the South Coast Air Quality Management District Air Quality Management Plan, Mid Basin Centennial Park ;;C&nf4ll Project Final EIR 6-1 4 Section 6 The project area is situated within an urbanized area that is predominately built out. The project area does not contain vacant lands in the immediate area to support large development projects. The majority of the new development would be infill development projects scattered in different locations throughout the Uty of Santa Ana. A listing of future development projects that were considered in the cumulative analysis is provided in Table 95 and shown in Figure 29. Table 95: List of Cumulative Development Projects No. Project Name Land Use Quantity ,I Alliance Church of Orange Church addition 21,000 TSF 2 Artist Gateway LiveNVork 14 DU 3 Bat Nha Buddhist Meditation Center Sanctuary 27,428 TSF 4 Boys and Girls Club Community Center Addition 2,700 TSF 5 6 Bristol-Memory Commercial Building Catalina Retail Building Commercial Commercial 6,900 TSF 5,580 TSF 7 Christ Our Savor Cathedral Sanctuary 2,650 seats 8 C & C Development North Commercial, Single Family Live/Work 9,450 TSF 95 DU 15 DU 9 C & C Mixed Use Development Apartments 70 DU 10 C & C Development Single Family 35 DU 11 12 City Venture City Venture Single Family Condominium 28 CIL 8 DU 13 City Venture Single Family 17 14 City Venture Townhouse 81 DU 15 Depot at Santiago Apartments Mixed Use 70 DU 9,000 TSF 16 Discovery Science Expansion Commercial 102,280 TSF 17 Legato at the Met Condominium 284 DU 18 Lotus Townhomes Townhornes 8 DU 19 Lyon Communities Apartments Commercial Townhornes 250 DU 2,424 TSF 14 DU 20 Main Place Remodel Commercial 150,000 TSF Mid Basin Centennial Park �j enf46Project Final EIR 6-2 8 - Section 6 21 Mater Der Parforrning Arts Performing Arts Center 36,000 TSF 22 Metro Town Square Expansion Retail 6,000 TSIF 23 One Broadway Plaza Office Restaurant 516,000 TSF 18,000 TSF 24 Town and Country Condominium Apartments 174 DU 174 DU 25 Santa Ana Lofts Apartment Commercial 149 DU 4,400 TSF 26 Sex�inger Homes Single Family 24 DU 27 Skyline Phase 11 Condomrnium 150 DU 28 South Coast Speed Wash Commercial 118 048 TSF 29 30 The roost The 301 Live/Work Multiple Family 1 DU 182 DU 31 Academy High School Hugh School 110, 500 TSF 32 The Line Commercial Apartments 4,000 TSF 228 DU 33 Magnolia School Education 52,417 TSF 34 Madison Mixed Use Apartment Live/Work Commercial 219 DU 4 DU 10,121 TSF 35 QCSA Education 60,697 TSF 36 5" 7 harbor Apartments Apartments Commercial 99 DU 10.700 TSF Du- �[Mulliog LpniVs TSFrl ON squam feet 6.4 Cumulative Impact Evaluation Aesthetics The components of the Proposed Project and Project Alternatives Would be located below ground or have been designed to avoid potential significant impacts to aesthetic resources. There are no other development projects proposed within the vicinity of the project area that could affect aesthetic resources within or near Centennial Park or at the Heritage Museum. Therefore, the Proposed Project and the Project Alternatives would not be contributing to significant cumulative impacts to aesthetic resources. Proposed development projects within the vicinity of J Mid Basin Centennial Park Jgdn: 46F`roject Final EIR 6-3 Section 6 Figure 29: Cumulative Project Location Map Mid Basin Centennial Park 'nj enf4Frolect Final FIFA 6-4 Section 6 Centennial Park and the Heritage Museum would be evaluated for potential impacts to aesthetic resources and if needed, would be required to include measures to reduce potentially significant aesthetic impacts. By evaluating irnpacts to aesthetic resources and requiring mitigation measures to minimize aesthetic impacts, potential cumulative impacts to aesthetic resources would be less than significant, Air Quality In accordance with CEQA Guidelines 15130(b), this analysis Of CUMUlative impacts is based on a summary of projections analysis provided in the South Coast Air Quality Management District Air Quality Management Plan, The South Coast Air Basin is in nonattainment for ozone, particulate matter (PM it and PM2 5), and nitrogen dioxide, which means that concentrations of those pollutants currentlly exceed the ambient air quality standards for those pollutants, if a project causes concentrations of ozone, PM1U, PIV112r�, and nitrogen dioxide to exceed the ambient air quality standards, then the project is considered to contribute considerably to significant cumulative air quality impacts. In accordance with CEQA Guidelines Section 15064, subdivision (h) (3), a: lead agency may determine that a project's incremental contribution to a, cumulative effect is not cumulatively considerable if the project complies with the requirements in a previously approved plan or mitigation program. As identified in Impact AIR-1, the Proposed Project and Project Alternatives would comply with the control measures in the AQMP and all of the SCAQMD's applicable rules and regulations and would' not exceed the SCAQMD's CEQA regional and local significance thresholds. The analysis contained in impact AIR-1 also demonstrates that the Proposed Project and Project Alternatives would be consistent with the most recent AQMP and State Implementation Plan without mitigation. Therefore, the Proposed Project and Project Alternatives would not contribute considerably to significant cumulative air quality impacts. Proposed development projects in the project area would be required to evaluate potential cumulative air quality impacts and provide measures to minimize cumulative air quality impacts in the region. By requiring the evaluation of potential adverse air quality and including measures to minimize air quality impacts potential significant cumulative air quality would be reduced to a less than significant level. Biology The project site and surrounding project area do not contain any special status plant or wildlife species. Therefore, the Proposed Project and the Project Alternatives would not contribute to significant adverse cumulative impacts to special status plant or wildlife species. The implementation of the Proposed k Mid Basin Centennial Park yJg&n1.1.1 _ j46Project Final EIR 6-5 Section 6 Project and Project Alternatives would also, riot result in temporary or permanent impacts to Wetland Waters of the U.S-/State or Waters of the U.S./State. Therefore, the Proposed Project and Project Alternatives would not be contributing considerably to cumulative impacts that would result in the permanent loss of Wetland Waters or Waters of the US/ State. Proposed development projects in the project area would be required to evaluate potential impacts to sensitive biological resources and would be required to provide rneasures to minimize impacts and to biological resources and to ensure that there would be no net loss of Waters of the U.S./State. By requiring the evaluation of potential impacts to biological resources arid including measures to avoid impacts biological resources, potential significant cumulative impacts to biological resources would be reduced to a less than significant level. Cultural Resources The project area has been investigated for the presence of cultural resources and it has been determined that the potential for cultural resources to be encountered within the project area would be low. Mitigation measures have been incorporated into the Proposed Project and Project Alternatives to avoid potential significant impacts to unknown cultural resources in the event they are encountered during construction activities. Proposed development projects in the project area would be required to evaluate the potential for impacts to cultural resources and under CEQA would be required to ensure that those project activities would not result in adverse impacts to cultural resources. By requiring the evaluation of potential impacts to cultural resources and including measures to avoid impacts to unknown buried cultural resources, potential significant cumulative impacts to cultural resources would be reduced to a less than significant level. Geology Implementation of the Proposed Project and Project Alternatives would not result in adverse geologic impacts that would expose people and structures to substantial geologic risks. Therefore, the Proposed Project and Project Alternatives would not contribute considerably to significant adverse cumulative geologic impacts in the project area. Proposed development in the project area would be required to prepared geotechnical studies to identify potential geologic constraints and include measures to ensure geologic stability. With the preparation and implementation of geotechnical studies, potential geologic related cumulative iimpacts would be reduce to a less than significant level, I L Mid Basin Centennial Park tQnf 4 Project Final EIR' 6-6 - 6 Section 6 Environmental Justice In comparison to all of Orange County, the City of Santa Ana has higher amount of lower income households. The implementation of the Proposed Project and Project Alternatives would increase groundwater supplies and would reduce the need for imported water supplies. The cost to purchase imported water Would be substantially higher than the cost to produce groundwater and would be a more financial burden to lower income households. Therefore, the implementation of the Proposed Project and Project Alternatives would result in beneficial impacts to low income households and would not contribute to significant adverse cumulative impacts to low income households. Greenhouse Gas Construction and operation of the Proposed Project and Project Alternatives would not generate significant adverse greenhouse gas emission impacts. Therefore, the Proposed Project and Project Alternatives would not contribute considerably to significant adverse cumulative greenhouse emission impacts in the regional area. Proposed development projects in the project area would be required to evaluate potential cumulative greenhouse gas emission impacts and provide measures to minimize Cumulative greenhouse gas emission impacts in the region. By requiring the evaluation of potential adverse greenhouse gas emission impacts and including measures to minimize greenhouse gas emission impacts, potential significant cumulative greenhouse gas emission impacts would be reduced to a less than significant level. HydrologyMater Quality Implementation of the Proposed Project and Project Alternatives would not result in adverse flood impacts to people or structures, Therefore, the Proposed Project and Project Alternatives would not contribute considerably to significant adverse cumulative flood impacts in the project area. The long term operation and construction activities associated with the Proposed Project and Project Alternatives and with cumulative development projects proposed within the project area could generate degraded surface water runoff and contribute to cumulatively significant water quality impacts. The Proposed Project and Project Alternatives and development projects proposed within the project area would be required to comply with Federal, State and local surface water quality regulations and standards to maintain water quality. Compliance with the water quality regulations and standards would reduce potential adverse significant cumulative surface water quality impacts to a less than significant level. Mid Basin Centennial Park �jgq&gbProject Final EIR 6-7 Section (3 Land Use The Proposed Project and Project Alternatives would be consistent with the City of Santa Ana General Plan and would not result in adverse land use compatibility impacts and therefore would not contribute considerably to cumulative adverse land use impacts. Proposed development projects within the project area would be required to be developed in accordance with the General Plan. Compliance with the General Plan would ensure that significant adverse cumulative land use impacts would be avoided, Noise Implementation of the Proposed Project and Project Alternatives would not generate long term noise impacts within the project area, 'Therefore, the Proposed Project and Project Alternatives would not contribute considerably to long term adverse significant noise impacts in the project area. The Proposed Project and Project Alternatives along with development projects proposed within the project area would generate construction-related short term noise impacts. The Proposed Project and Project Alternatives and development projects proposed within the project area would be required to comply with local noise ordinance requirements and if needed would include measures to minimize noise impacts. Compliance with local noise ordinance noise standards will reduce potential significant adverse cumulative noise impacts to a less than significant level. Transportation/Traffic The long term operation of the Proposed Project and Project Alternatives would not generate significant adverse long term traffic impacts or short term significant adverse construction impacts within the project area. Therefore, the Proposed Project and Project Alternatives would not contribute considerably to long term or short term construction traffic impacts in the project area. Development projects proposed within, the project area would be evaluated for potential Cumulative traffic impacts and if needed measures would be identified to minimize traffic impacts. By requiring the evaluation of potential traffic impacts and including measures to avoid impacts to minimize traffic impacts potential significant cumulative traffic impacts would be reduced to a less than significant level. Mid Basin Centennial Park �JeenAliPrDject Final EIR 6-8 Section 7 SECTIO11 7.0 OTAER CEQA CONS I DERATIORIS 7.1 Growth Inducing impacts Pursuant to Sections 15126(d) and 15126.2(d) of the CEQA Guidelines, this section evaluates if the project has the potential to foster economic or population growth, or the construction of additional housing, either directly or indirectly, in the Surrounding environment. Specifically, the following questions Would be evaluated to determine potential growth inducing impacts associated with the implementation of the Mid Basin Centennial Park Injection Well Project. Would the project remove obstacles to growth through the construction or extension of major infrastructure facilities that do not presently exist in the project area, or through changes in existing regulations pertaining to land development? Would the project result in the need to expand one or more public services to maintain desired levels of service? Would the project encourage or facilitate economic effects that could result in other activities that could significantly affect the environment? Would approval of the project involve some precedent setting action that could encourage and facilitate other activities that could significantly affect the environment? Would the project remove obstacles to growth through the construction or extension of major infrastructure facilities that do not presently exist In the project area, or through changes in existing regulations pertaining to land development? The construction and operation of the Mid Basin Centennial Park Injection Well Project would not involve the construction of new infrastructure or the extension of existing infrastructure to facilitate new construction or growth in the project area. The additional groundwater supplies generated from the project would meet existing and planned groundwater needs within OCWD service area. Would the project result in the need to expand one or more public services to maintain desired levels of service? The operation of the Mid Basin Centennial Park Injection Well Project would not result in the need to expand existing levels of public services over current levels of demand. The operation and maintenance of the project would be provided by OCWD employees. �d J Mid Basin Centennial 1 nnial Park I ' igd"i - 2 Project Final EIR 7-1 Section 7 Would the project encourage or facilitate economic effects that could result in other activities that could significantly affect the environment? The construction of the Mid Basin Centennial) Park Injection Well Project would generate short-term employment opportunities. The majority of the employment opportunities would be expected to be filled by the currently employed and unemployed labor force from the surrounding area. Thee operation of the project would be by existing OCWD employees. The implementation of the Mid Basin Centennial Park Injection Well Project would not increase Population levels or housing demand that would stimulate new economic activity that could result in other activities that could have significant effects on the environment. Would approval of the Project involve some precedent setting action that could encourage and facilitate other activities that could significantly affect the environment? The Mid Basin Centennial Park injection Well Project is not a part or phase of a larger project. The project would be consistent with the City of Santa Ana General Plan and the implementation of the project would not set a precedent that would facilitate growth in the project area. 7.2 Significant Irreversible Changes Section 15126 (C) of the CEQA Guidelines requires that an EIR describe any significant irreversible environmental changes that would be caused by the project should it be implemented. Such a change would occur if one of the following scenarios is involved: The project would involve a large commitment of non-renewable resources Irreversible damage can result from environmental accidents associated with the project " The project consumption of resources is not justified Implementation of the Mid Basin Centennial Park Injection Well Project would result in an irretrievable commitment of non-renewable resources in the form energy supplies. The energy Supplies would mostly be fuels to operate heavy equipment to construct and maintain the project. Although the construction and operation of the project would require a permanent commitment of energy resources, the project would increase groundwater supplies and reduce the need to import water to meet domestic water needs. Because the energy commitments to import water are much more than the amount of energy to implement the Mid Basin Centennial Park Injections Well Project, there would be a net benefit in regards to the commitment of non-renewable resources within the project area. Mid Basin Centennial Park 136Y roject Final EIR 7-2 Section 7 7.3 Significant Unavoidable Significant Impacts Section 15126.2 (b) of the CEQA Guidelines requires that the EIR describe any significant impacts, including those that can be mitigated but not reduced to less than significant levels. With the incorporation of mitigation measures and project design features there would not be any significant unavoidable adverse impacts associated with the implementation of the Proposed Project or Project Alternatives. Mid Basin Centennial Park I A H Project Final EIR 7-3 4 moire, k` M01I1 i► Hi7• 61114 C7111 101 Lis ONW11 This Federal Consultation Review has been prepared to supplement the Environmental Impact Report/Environmental Assessment prepared for the Mid Basin Centennial Park Injection Well Project to meet requirements established by the U.S. Environmental Protection Agency for the State Revolving Loan Program administered by the State Water Resources Control Board, The analysis incorporates by reference technical Studies prepared for the Mid Basin Centennial Park Injection Well Project Environmental Impact Report/Environmental Assessment. 8.2 Project The Proposed Project involves the construction of four underground injection wells at Centennial Park and a below ground monitoring well at the Heritage Museum. The water supply to the injection wells would be recycled water from OCWD GWRS water treatment plant in Fountain Valley. An underground pipeline would be constructed that would extend from the GWRS water supply pipeline to Centennial Park and then would branch off to the four injection well sites. When in operation the four injection wells would provide up to 12 MGD of additional groundwater recharge capacity to the Orange County Groundwater Basin. To monitor water quality in the area, a monitoring well has been proposed at the Heritage Museum. The Centennial Park Injection Wells project involves six construction activities. These activities include: • Construction of Water Supply Pipeline • Construction of Back Flush Pipeline • Drilling and Construction of Injection Wells at Centennial Park • Construction of Power and Communication Systems • Repaving of Centennial Park Parking Lot • Site Improvements and Drilling and Construction of a Monitoring Well at Heritage Museum Construction of Water Supply Pipeline Each of the four injection wells would require a pipeline connection to deliver water to the injection well. The source of the water for the injection wells would be the OCWD GWR System pipeline located in the western levee of the Santa Ana River, To access the GRWS pipeline, the western levee would have to be Q Mid Basin Centennial Park lnjgc on dll Project Final EIR 8-1 -04 2 6 5 Section 8 excavated to expose the pipeline. Frorn the GWRS pipeline, the water supply pipeline would extend from along the nose piers of the Edinger Avenue Bridge. Once across the bridge the pipeline would be placed underground on the east facing levee of the Santa Ana River and then would be extended underground along the south side of Edinger Avenue to the entrance of Centennial Park. Within Centennial Park the water supply pipeline would extend along the alignment of Centennial Loop Road to the injection well sites. The water supply pipeline would be approximately 5,500 feet in length and would have diameters ranging from 36 inches at its connection with GWR System pipeline to 14 inches along the loop road in Centennial Park, Construction of Back Flush Pipeline In order to maintain injection efficiency and longevity of the injections wells, periodic back flushing operations would be necessary. To help conserve water, the water back flushed from the injection wells would be discharged into Centennial Lake with a secondary discharge option into the Greenville Banning Flood Control Channel. As shown in Figure 3 the back flush pipeline Would generally follow the same alignment of the water supply pipeline. The back flush pipeline would be approximately 2,300 feet in length with a diameter of 18 inches. Drilling and Construction of Injection Wells at Centennial Park A total of four injection wells have been proposed in Centennial Park. The proposed injection wells would operate 24 hours a day injecting water into the groundwater basin at depth of approximately 1,200 feet. The injection wells would be enclosed and would operate in underground vaults under existing parking areas at Centennial Park. A 5 foot by 5 foot metal cover would be constructed at the finished grade of the parking lot to provide access into each vault. Each vault would be approximately 260 square feet and Would be excavated to a depth of 15 feet below the ground surface. The drilling activities for each injection well would require continuous 24 hour drilling over a three month period. During the well drilling phase, a work area averaging about 12,200 square feet would be needed for each well site. To minimize the temporary loss of parking area, after the well drilling activities are completed the work area would be reduced to 3,000 square feet to construct each well. A total of three months would be needed to construct each well after well drilling is completed. Shared Recreation✓Communication Structures Power and communication would be required at each injection well. The electrical, communication and process control equipment power would be shared Mid Basin Centennial Park Aq&g6Project Final EIR 8-2 Section 8 in two above ground structures that would function as utility room for OCWD and public restroom /changing rooms and a park office for Centennial Park staff. The first shared structure would be located near the northwest corner of Centennial Park adjacent to the soccer fields. A 1,050 square foot shared structure would be built that would contain a 220 square foot public restroom, a 550 square foot changing area for soccer teams and a 280 square foot utility room for t7CWD. The proposed shared structure would be constructed on an existing asphalt area adjacent to the soccer field complex. A 200 foot long x10 foot wide ADA approved sidewalk would be constructed to provide pedestrian access from the Centennial Park parking lot to the soccer field and to the Santa Ana River Bike Trail. The second shared structure would be located near the Centennial Park skate park. An existing 576 square foot restroom structure would be demolished and replaced with a 596 square foot shared structure. The shared structure would contain 212 square foot public restroom, 178 square foot park office and 206 square foot utility room. A concrete walkway ranging in size from 3 feet to 10 feet would be provided around the perimeter of the shared structure. The park office would be oriented towards the skate park to allow Centennial Park staff to supervise the activities at the skate park. Additionally, to increase the defensibility of the skate park an existing 3 foot high fence around the skate park would be replaced with a new 8 foot high fence and a surveillance camera would be installed and wired to the park office. Repaving of Centennial Park Parking Lot Once the construction activities are completed, the parking areas and roadways at Centennial Park would be repaved. A total of 9.64 acres of area would be repaved. The paving activity would include the grinding and removal of two inches of existing asphalt, replacing the depth with new asphalt, and restoring the parking and roadway painting and markings. The repaving of the parking lot would not reduce the current amount of parking spaces. Construction of Monitoring Well A below ground monitoring well would be constructed within an existing dirt parking area at the Heritage Museum site. The monitoring well would be housed in an underground fault with a 2' x 3' metal cover and 6'x T concrete apron. The concrete apron would be incorporated into the existing parking area. The monitoring well would operate 24 hours per day monitoring water levels and water quality. However, unlike injection wells the monitoring well would sit idle, until the time it is sampled or maintained. A 5,000 square foot area would be needed to construct, operate and maintain the monitoring well. The proposed 40. Mid Basin Centennial Park �Ij D n f &Fr'oject Final EIR 8 -3 Section 8 well would be a nested monitoring well and would be drilled by direct mud rotary drilling equipment and would occur 24 hours a day over a two week period and 12 hours a day over another two week period. After well construction is completed the parking direct parking area would be resurfaced with decomposed granite. Additionally, as part of site improvements at Heritage Museum, an existing irrigation system to the demonstrate garden would be replaced and interpretive education kiosks would be installed. 8.3 Long Term Maintenance Injection Wells The injection wells are routinely redeveloped every two to five years to remove accumulated sediments and microbiological build -up within the well casings to restore the well capacity to operate at their maximum injection capacity. As part of the redevelopment the injection well would be back washed. The discharging of the well water associated with redevelopment activities will be conducted in accordance with NPDES Permit requirements. Monitoring Wells Every two years OCW D assesses the condition of monitoring wells to determine if they need redevelopment. The redevelopment activities would be similar to an injection well. 8.4 Construction Phasing Plan The Proposed Project is estimated to take 14 months of active construction and is broken into 8 phases. Constructions are expected to start of early 2017 and conclude in 2019. 8.5 Federal Endangered Species Act (ESA), Section 7 Does the project involve any direct effects from construction activities, or indlirect, effects such as growth inducement that may affect federally listed threatened or endangered species or their critical habitat that are known, or have a potential, to occur on -site, in the surrounding area, or in the service area? 9 No. Discuss why the Project will not impact any federally listed special status species: The following analysis is based on the Biological Assessment that was prepared for the Mid Basin Centennial Park Injection Well Project by the l'OCWD Natural Resources Department in June of 2015. The Biological, Assessment with database searches is presented in Appendix C. Mid Basin Centennial Park In, 11Project Final EIR 8 -4 Section 8 Federal /State Special Status Plant Species To determine the potential for Federal and State Listed special status plant species to occur at Centennial Park and at the Heritage Museum a review of the U.S. Department of Interior Information Planning and Conservation Systern Database and the California Department of Fish and Wildlife California Natural Diversity Data Base was conducted. A listing of Federal and State Listed special status plant species that have potential to occur within the project area is shown in Table 96. Based on existing habitat conditions there are no Federal or State Listed special status plant species that have a moderate or higher potential to occur at Centennial Park or at Heritage Museum. Table 96: List of Federal/State Special Status Plant Species Mid Basin Centennial Park ICI Apra 11 Project Final FIR 8-5 Federal State QNPS General Habitat Potentlat Occurrence Salt Marsh Birds E E 1B.2 Coastal Salt Low —beak Marsh both sites lack suitable (Cordylanthus habitat. Recent occurrence maritimas ssp, 2005 Upper Newport back Mantimus) Bay. San Diego button- E E 1B'1 Vernal Pool Low celery (Eryngiurn Complex Both sites lack suitable aristulatum var. habitat, Recent occurrence pioshii) 2011 Fairview Park Costa Mesa, Ventura marsh E E I B 1 Coastal Salt Low Milk-vetch Marsh Both sates lack sultable (Astragalus habitat. Last occurrence 1987 pycnostachyus Bolsa Bay var.) Gambel's water E T 161 Marshes and Low cress Swamps Both sites lack suitable {Nasturtium habitat. Recent occurrence garri 1908 Huntington Beach L.irend' CAI.nriz, NMW. Pillar SqgimWgM FiedspliC 1 A P1 a f1s; presumed si in Cpi E endri D-fewsrado,lidai sr@rnJ,3ni i,, 7>hfpa,,a mail else, here r I huadi.ned 2 P I a Is ram, th me fee) ad fir P, i ld a i iq,eon la Ga Iii and ia ai i i mi rein ri an alaawl,cra S-1 c, 5p.,pi Species of Q'rn"" 3-Planis sba)l whish w, noad more roview F GanduJ.t. for Letsuc; 4 larnla of Wiled diiiniruhun Ni, Nw i CNP§ Tbreal Bank §Wlg Listing (CJJifam,,u Erman q1.lnJ Spmg,, _A,1 CCFG I Sei E,,rengered 2 Fairly lddsqndd FP Fall, "Fiefilland E-Endaniaered I Nat Very F�ddui,,,,ad r 111Mab@aad SNL-Not Ustal . . ........ . . . . Mid Basin Centennial Park ICI Apra 11 Project Final FIR 8-5 Section 8 Federal/State Listed Special Status Wildlife Species To determine the potential for Federal and State Listed special status wildlife species to occur within Centennial Park and the Heritage Museum a review of the U.S. Department of Interior Information Planning and Conservation System Database and the California Department of Fish and Wildlife California Natural Diversity Data Base was conducted. A listing of Federal and State Listed special status wildlife species with the potential to occur within the project area is shown in Table 97. Based on existing habitat conditions there are no Federal or State Listed special status wildlife species that have a moderate or higher potential to occur at Centennial Park or at Heritage Museum. Table 97: List of Federal Special Status Wildlife Species Mid Basin Centennial Park d I� nf I reject Final j e- 6 Federal State General Habitat Potentlai Occurrence California Least E E Sandy Beaches Low Tern Both sites lack suitable habitat. (Sterna Recent Occurrence 2011 Seal Beach antillarorn Wildlife Refuge, Least Bell's Vireo E E Low growing Low (Vireo ballif riparian Heritage Museum site appears too pusillus) vegetation small to host a territorial male and extremely isolated with no connectivity to other riparian strips. Recent sighting 2013 Sari Mateo Creek. Light Footed F E Salt Marshes Low Clapper Rail with cordgrass Both Sites lack suitable habitat. (ROUS and pickleweed Recent sighting 2007 Upper Newport longirostris Bay. leviges) Southwester E E Riparian Low Willow Flycatcher Woodlands Heritage Museum site is too small (Empidonax trailli and xeric condition during breeding extimus) season not suitable for nesting Recent sighting 2003 Sari Juan Creek. Western Snowy -r NIL Sandy Beaches Low Plover Salt Ponds Both sites pack suitable habitat (Charadrius Recent sighting 1986 Newland I Marsh. -2fvosus San Diego Fairy E NL Vernal Pools Low Shrimp Both sites lack suitable habitat (Branchinecta Recent sighting 2010 San Juan sandiegonnsis) Ca. istrano. Pacific Pocket E NIL Coastal Plains Low Mid Basin Centennial Park d I� nf I reject Final j e- 6 (Porognithus longimortibras E Eildqnq'rad T-Threatened SSC Special Spkvies of Cnincorri C-Candidale PUr LiAng Callorma Endangered Spewes AUICalitornoa Department Fish Game E-Endangered FP Fully P'Otected SSC-Spadal Species W Concem Critical Habitat Section 8 Both sites iack suftWe habitat Recent sighting 1999 Dana Point Headiwids, A database search of the United States Fish and Wildlife Service Information, Planning, and Conservation System Database and the California Department of Fish and Wildlife Natural Diversity Database for the Newport USGS Quadrangle, which is where the project site is located, shows that the project site is not located on any lands that are designated Critical Habitat. Therefore, implementation of the Proposed Project would not have any direct or indirect adverse impacts on lands designated Critical Habitat. Mitigation Measures No Mitigation Measures required. Level of Impact No adverse impact. 8.15 Magnuson - Stevens Fishery Conservation and Management Act, Essential Fish Habitat: Does the project involve any direct effects from construction activities, or indirect effects such as growth inducement that may adversely affect essential fish habitat? nx No Discuss why the project will not impact essential fish habitat: According to review of the National Marine Fisheries Service Essential Fish Habitat Map for the Pacific Ocean, there is no essential fish habitat in the surface water bodies near the project area. Therefore, the construction and operation of the Mid Basin Centennial Park Injection Well Project would riot result in adverse impacts to any Essential Fish Habitat. Mitigation Measures No mitigation measures required. Mid Basin Centennial Park I j&6n JgIl Project Final EIR 8-7 Section 8 Level of Impact No adverse impact, 8.7 National Historic Preservation Act, Section 106 Identify the area of potential effects (APE), including construction, staging areas, and depth of any excavation. (Note: the APE is three dimensional and includes all areas that may be affected by the project, including the surface area and extending below ground to the depth of any project excavations). The foilowing analysis is based on a Cultural Resources Report prepared for the Mid Basin Centennial Park. Injection Well Project by BonterrafPsomas Consultants in September 2015. The Cultural Resources Report is presented in Appendix D. Area of Potential Effects As shown in f=igure 16, the Area of Potential Effect (APE) is the 87 -acre Centennial Park Site 'located at 3000 West Edinger Avenue and the 12 -acre Heritage Museum site Ilocated at 3101 West Harvard Street. Cultural Resources Record Search A record search was contacted at the South Central Coastal Information Center in April of 2015. As shown in Table 98 the record search identified three cultural' resource studies that were prepared near Centennial Park and the Heritage Museum. The studies consisted of pedestrian field surveys and cultural resource evaluations, or were research oriented and did not involve field work. Each study was reviewed to determine if they contained any cultural resource information relevant to the Centennial Park and to the Heritage Museum. The records search indicates that no cultural resource sites have been recorded within a one -mile radius of the project site. Table 98: Cultural Resources Investigations Near Project Area RepOrtNo. Authoril'tar Study tfa orlptlon OR -00901 Langenwater and Brock 1985 Phase H Prado Basin and flower Santa Ana River OR -01836 Padon 1998 Cultural Resources Review for Groundwater Replenishment OR -04259 Becker at al. 2007' Monitoring Report Groundwater Replenishment J Mid Basin Centennial Park jn l ySarr Jj,Preject Final EIR 8 -8 Section 8 The Heritage Museum contains a historic plaza featuring several buildings from the 1890-s, extensive flora gardens, citrus groves, agriculture demonstration garden area and Native vegetation open space. Two historical homes are located within the boundary of the Heritage Museum: the Maag Ranch House and the Kellogg House, The Maag Ranch House is located at 3101 West Harvard Street. The house was moved from its original location on Fairhaven Avenue to the museum property in 1980. The house was constructed in 1899 and is listed on the HPDF and was determined ineligible for the NRHP. That Maag Ranch House has been evaluated and been listed as a Landmark on the City of Santa Ana Local Register and determined to be eligible for listing on the State of California Register of Historical Resources. The evaluation prepared for the Maag Ranch House is contained in Appendix D-1, The Kellogg House was also moved to the museum property in 1980 from its original location on Orange Avenue. The Kellogg House has been evaluated and been listed as a Landmark on the City of Santa Ana Local Register and determined to be eligible for listing on the State of California Register of Historical Resources. The evaluation prepared for the Kellogg House is contained in Appendix D-1, A short segment of the water supply pipeline would be attached to the nose piers of the Edinger Bridge that crosses the Santa Ana River Channel immediately northwest of Centennial Park. This bridge is listed in the Caltrans California Bridge Inventory (No. 55 0266). The bridge has been assigned an NRHP Status Code 5. The Bridge underwent major construction in 2013 and 2014, and it does not warrant further consideration during this project and would not be eligible for the NRHP, Archeological Survey Results The archaeological survey of the property was conducted on May 7, 2015, by Mr. David Smith, the Bon'Terra/Psomas Senior archaeologist based out of the Orange County office. At Centennial Park the location of the pipeline alignment, the injection well sites and the proposed shared structures were on paved surfaces. Given the amount of disturbance that has occurred to the site the potential for discovery Of cultural resources would be low. At the Heritage Museum site the proposed monitoring well would be situated on an existing dirt parking lot. The Heritage Museum site has experienced considerate amount of construction activity as part of the construction of Godinez High School, which is adjacent to the monitoring well site. Given the amount of tea Mid Basin Centennial Park 218 2& 18 - '*JProject Final EiR 8-9 Section 8 disturbance that has occurred to the site the potential for discovery of cultural resources would be low. Potential Impacts to Historical and Pre-Historic Cultural Resources The records search indicates that no cultural resource sites have been recorded within a one-mile radius of the project site. Additionally, no archaeological materials were observed during the pedestrian survey and the potential for discover of known cultural resources would be low. Even though there is low potential for discover of archeological resources, there would be some potential that unknown Cultural resources could be encountered during earthwork activity. With the implementation of Mitigation Measure CR-1 potential adverse impacts to unknown cultural resources would be reduced to a less than significant level. Two historical Structures are present at the Heritage Museum. Both structures are well outside of any potential impacts from the Proposed Project and would not suffer from and direct or indirect construction related impacts. Mitigation Measure CR-1: A qualified Archaeologist be retained during construction to observe grading activities in the uppermost layers of sediment (soils and younger Quaternary Alluvium) and to salvage and catalogue archaeological resources, as necessary. The designated Archaeologist should be present during the pre-grade meeting to discuss cultural resources sensitivity and to assess whether archaeological resources have the potential to be encountered, The Archaeologist must first determine whether an archaeological resource uncovered during construction is a "unique archaeological resource" pursuant to Section 21083.2(g) of the California Public Resources Code or a "historical resource" pursuant to Section 15064.5(a) of the State CEQA Guidelines. If the archaeological resource is determined to be a "Unique archaeological resource" or a "historical resource", the Archaeologist shall formulate a mitigation plan in consultation with the OCWD that satisfies the requirements of the above listed sections. Level of Impact Less than significant impact with Mitigation Measure CR-1 Native American Sacred Burial Grounds A Native American record search was conducted by Native American Heritage Commission (NAHC) to determine if there were any known Native American sacred burial grounds on or near the project area. The NAHC review of the Sacred Lands Files did not show the presence of cultural resources on or near the project area, The NAHC acknowledged that their records might not contain all Mid Basin Centennial Park A n I I Project Final " - Section 8 information relevant to Native American sites in the project area and advised BonTerra/ Psomas to contact various local tribes. The NAHC provided a list of tribes affiliated with the project site. Each tribe on the list was notified in writing on June 8, 2015, of the Proposed Project and was invited to provide any information they could have regarding cultural resources on or near the project area. No responses were provided indicting the potential presence of Native American scared burial grounds. Even though there is low potential for discover of Native American sacred burial grounds, there would be some potential that unknown Native American sacred burial grounds could be encountered during earthwork activities. With the impllementation of Mitigation Measure CR-2 potential adverse impacts to unknown Native American sacred burial remains would be reduced to a less than significant level!. Mitigation Measure CR-2: If human remains are encountered during excavation activities, all work shall halt in the vicinity of the remains and the County Coroner shall be notified (California Public Resources Code §5097.98). The Coroner will determine whether the remains are of forensic interest. If the Coroner, with the aid of a qualified Archaeologist, determines that the remains are prehistoric, s/he will contact the Native American Heritage Commission (NAHC). The NAHC will be responsiible for designating the most likely descendant (MLD), who will be responsible for the Ultimate disposition of the remains, as required by Section 7050.5 of the California Health and Safety Code. The MLD shall make his/her recommendation within 48 hours of being granted access to the sites. If feasible, the recommendation of the MLD shall be followed and may include scientific removal and non-destructive analysis of the human remains and any items associated with Native American burials (California Health and Safety Code §7050.5). If the landowner rejects the recommendations of the MILD, the landowner shall rebury the remains with appropriate dignity on the property in a location that will not be subject to further subsurface disturbance (California Public Resources Code §5097.98). Level of Impact Less than significant impact with Mitigation Measure CR-2 83 Federal Clean Air Air Basin: South Coast Air Basin Local Air District: South Coast Air Quality Management District k,j Mid Basin Centennial Park J rt ry Project Final EIR 8 11 Section 8 Is the project subject to a State Implementation Plan (SIP) conformity determination? 9 Yes. The project is in a non-attainment area or attainment area subject to maintenance plans for a federal criteria pollutant. Include information to indicate the non-attainment designation (e.g. moderate, serious, severe, or extreme), if applicable. if estimated emissions (below) are above the federal de minimis levels, but the project is sized to meet only the needs of current population projections that are used in the approved SIP for air quality, then quantitatively indicate how the proposed capacity increase was calculated using population projections. The following analysis is based on an Air Quality Impact Report prepared for the Mid Basin Centennial Park Injection Well Project by Bonterra/Psomas in October of 201' 5. The Air Quality Report is presented in Appendix B, Background The General Conformity Rule of the Federal Clean Air Act (42 USC 7401) Implements Section 176(c) of the Clean Air Act, and establishes de minimis thresholds for ozone, GO, and other regulated pollutants for nonattainment and maintenance areas. The precursors of ozone include reactive organic gases, that are also known as volatile organic gases (VOC), and nitrogen oxides (NOx). The regulations apply to proposed federal actions that would cause emissions of criteria air pollutants or ozone precursors to occur in locations designated as nonattainment or maintenance areas for the emitted pollutants. The purpose of the General Conformity Rule is to: Ensure that federal activities do not cause or contribute to new violations of the national ambient air quality standards; Ensure that actions do not cause additional or worsen existing violation of, or contribute to new violations of, the national ambient air quality standards; and Ensure that attainment of the national ambient air quality standards is not delayed. Attainment Status and Applicable de minimis Thresholds The General Conformity Rule specifies de minimis thresholds, which are based on the severity of an area's nonattainment with the federal standards. If a project is less than the de minimis thresholds, additional analysis is not required. The de minimis thresholds for Orange County are provided in Table 99. Mid Basin Centennial Park Project Final EIR 8 -12 Section 8 Table 99: Orange County Attainment Status Criteria Pollutant Federal A4mblent Air Quality Standard De minir l,s Threshold Designation Classification (tpy) Ozone Nonattainment Extreme 10" (VOC or NOx) Carbon monoxide Maintenance Serious 100 Nitrogen dioxide ArtairrmentlMainlenance N/A 100 (annual) Sulfur dioxide Attainment NIA N/A PMr� Nonattainment Serious 70 PM2.b' Nonattainment NIA N/A Lead Attainment NIA N/A Notes'. ipy = tons per year VnC — V4 kuilel organic Cernpuuin[f, s NO, — nitrogen oxides MIA = Not applicable imp, applicable via mimme, thredhoid appl'ios equally to each ozone pnecucsar (VOG and NOd The General GonVnrrnity rule does riot currently address `W, Source'. US E'nvironmanral protection Agency 2013a, Green Bock Nun�attainrurenv Areas for CnWria Pollutants, Websi,td; www.Ppe goWM0oegpsligreen6k) . Accessed February 7, 2 ©'13. U. 5 Environmeri Protraction Agency 20131 General Conformity ON mmurusLevels. Vueesire', Mrs /Avew:epa,9olalr FgeinranforrnJdominlmis.h4rnL Accessed February 7, 2013. As shown in Table 99, the project area is in ncnattainment for the federal ozone and PM2 5 standards, ands maintenance for federal PM10 standards. De minimis thresholds apply to annual emissions. The de minimis threshold for ozone applies equally to each ozone precursors VOC and NOx. The de minimis threshold for nitrogen dioxide is greater than the threshold for NOx, however, nitrogen dioxide is one of the nitrogen oxides (N!Ox). Therefore, if the project generates less NOx, than the 10 -tons- per -year (tpy) threshold for ozone, the project would generate less nitrogen dioxide than 10 tpy and, thus, less than the de minimis threshold of 100 tpy, The de minimis threshold for carbon monoxide is 100 tpy, Conformity determinations for sulfur dioxide and lead are not required, Project Emissions (Construction - Generated Localized Air Pollutants Localized air quality impact thresholds represent the maximum emissions from a project that would not Cause or contribute to an exceedance of applicable state or federal ambient air quality standard. As shown in Table 100 Proposed Project tq Mid Basin Centennial Park (Project Final EIR 5 -13 Section 8 localized emissions of NOx, CO, PIv110 and PM2 5 would be less than the SCAQMD "s localized significance thresholds. Table 100: Proposed Project Localized Construction Emissions. Construction Activity Emissions 1Poundslltkayp NOx Co PMpe it Phase 1- Install pipeline Build Shared Structures Improve Heritage sate Project maximum daily on -site 81 64 7' 2 emissions 4 51 48 3 SCAOMD screening 83 753 12 4 Thresholds 2 Phase 3 -4 -5- Well Development 2 30 Exceed Threshold? No No No No NO = nitrogen Lxjdcws C0 = carban monoxide Ph1m and PMzs'= paNin late riallur Notes: 5aure.e nP Irrreslnoltls: SOIIM Uaasi Air OUality Manage rnmi Disttict 2Yr9, iar SRA 22, 500 meters, 1 -acre. site. Proposed Project Construction - Generated Regional Air Pollutants Regional emissions include those generated from alll onsite and offsite activities. Regional significance thresholds have been established by the SCAQMD because emissions from projects in the Basin can potentially contribute to the existing emission burden and possibly affect the attainment and maintenance of ambient air quality standards. As shown in Table 101 Proposed Project regional emissions of NOx, CO, PM10 and PM2.5 would be less than the SCAQMD's localized significance thresholds. Table 101: Proposed Project Estimated Maximum Daily Construction Emissions (Pounds /Day) Phase %ioC NOx Co PM10 Pil Phase 1- Install pipeline Build Shared Structures Improve Heritage sate 1 17 17 3 1 Phase 2- Well Drillings 4 51 48 3 2 Phase 3 -4 -5 -Well Drilling 4 51 48 3 2 Phase 3 -4 -5- Well Development 2 30 17 1 1 Total Phases 3 -4 -5 6 82 65 4 3 Phase 6- Weil Development 2 30 17 1 1 Phase 7- Well 4 51 48 3 2 Mid Basin Centennial Park j c&n bProject Final EIR 8 -14 Section 8 C?rilling /Development Vic NOx Co PMIO PM2.5: Phase 7- Monitoring Well Equipping <0.5 7 5 <0 5 <0.5 Total Phase 7 5 58 53 3 3 Phase 8- Well Equip /Paving 3 20 22 a 2 Significance Threshold 7'5 1 100 1 550 150 55 Significant Impact? No No No No No Skalo nark conv=t'*n amissaons wo(00 he negllghe campared la the well.dr(IIInt7 and equipping emissnans, end are no &hewn. SOLD value exceeds SCAOMD threshold Sue Appsxndix 8 6orCaIMMod Nadel Wrir, . Proposed Project Operation- Generated Regional air Pollutants Operational emissions would be generated by the proposed Project from maintenance activities conducted at the injection well sites. As shown in Table 102 Project operational emissions of NOx, CO, PMI Q and PM2 5 would be less than the SCAQMD's localized significance thresholds. Table 102: Proposed Project Regional Operational Emissions Phase Vic NOx Co PMIO PM2.5: Well Redevelopment 4 41 18 1 1 Significance. Threshold 55 55 550 150 55 Significant Impact? No No No No No Proposed Project Operation- Generated Local Air Pollutants Operational emissions would be generated by the Proposed Project from maintenance activities conducted at the injection well sites. As shown in Table 103 Project operational emissions of NOx, CO, PM,Q and PM2,5 would be less than the SCAQMD's locallized significance thresholds. Table 103: Proposed Project Local Operational Emissions Phase NQX Co PM1t1 PM2 5 Well Redevelopment 40 17 1 1 Significance Threshold 83 753 12 4 Significant Impact? No No No No Mid Basin Centennial Park �ger*6Project Final EIR 8 -15 Section 8 Toxic Air Pollutants - Construction The construction equipment for the Proposed Project would emit Diesel Particulate Matter (DPM), which is a carcinogen. However, the DPM emissions are short-term in nature. Determination of risk from DPM is considered over a 70- year exposure time. Construction emissions are estimated to be generated over the course of 24 months. Since the use of construction equipment would (1 ) be temporary and would not be close to the 70-year timeframe, and (2) would not occur in a single location but be spread out geographically, exposure of sensitive receptors to DPM would not be substantial. Emissions of DPM would not be substantial enough to be considered a significant health risk. General Conformity Regional Construction Emissions General Conformity Analysis The results of the criteria pollutant calculations for the Proposed Project construction activities for each phase are shown in Table 104. These values are compared with the General Conformity de minimis annual thresholds. As shown, in Table 104, all estimated annual emissions would be less than the applicable thresholds. It should be noted that Table 104 conservatively shows all Proposed! Project construction emissions occurring in one year. However, project construction would occur over approximately two years and the annual emissions for a one-year period would be even less. Table 104; Proposed Project Regional Construction Emissions (TonsfYcar) Phase VOC NOX CO PM'10 1 Ill Phase I- Install pipeline 0.06 0.70 0.74 OM 0,04 Build Shared Structures Improve Heritage Site Phase 2- Well Drilling 0,03 0,30 0,24 0,01 001 Phase 3- Well Drilling and 0.03 0A2 031 002 002 D9vLIcprn8nt Phase 4- Well Development 0.03 0,42 0.311 0.02 002 and Development Phase 5- Well Development 0,03 042 0L31 0.02 0,02 Phase 6- Well 001 0.12 0.07 <0.005 <0.005 Drilling/Development Phase 7- Monitoring Weld 003 032 0.26 0.01 0.01 Drilling, equip and skate park irnprovements 6�,:) Mid Basin Centennial Park 16 Project Final Ell B-16 0=171fftl Phase 8- Well Equip/Paving 0,02 0.06 CO 0.02 -0.006 Total 024 2.76 —0.07-- 2.31 0.18 0.12 General Confornilty de 10 10 100 100 100 mirfirnis lirnits/NEPA No - No - Na Na Na thresholds in toms per year Significant Impact? No I No I No No No Sao Appendix D tar GaIEE Mod Mad0OUtpUtS J Regional Operational Emissions General Conformity Analysis The total annual criteria pollutant emissions for the Proposed Project are shown in Table 105 and are compared with the General Conformity de minimis annual thresholds. As shown in Table 105, annual emissions of all pollutants would be less than the applicable General Conformity thresholds. Table 105: Proposed Project Estimated Annual Operation Emissions Phase Voc Ox CO PMI D PM2.5 Well Redevelopment 0.04 CAC 0.18 0,01 0.01 General Conformity de minimis limiN/NEPA thresholds in tons per year 10 10 100 100 100 Significant Impact? No - No - Na Na Na General Conformity As shown in Table 106 the annual emissions the Proposed Project would generate would be less than the de minimis threshold for General Conformity. Therefore, additional analysis would not be required- I Mid Basin Centennial Park Ace-rlftli Project Final EIR 8-17 Section 8 Table 1016: Proposed Project General Conformity Criteria Federal Status Nonattainment Threshold of Construction Pollutant (Attai Section 8 SCACMD significance threshold. Therefore, greenhouse gas emission impacts during construction would not be significant. Table 107: Estimate Proposed Project construction Greenhouse Gas Emissions Activity Unit Emissions MTCO2e Number of Activities Total Emissions MTCO2a , Pipelines, Shared Structures, Heritage Site 111 1 111 Well Drillin 66 5 330 Well Development 31 5 155 Well EgUipping 2 4 8 Paving 13 1 13 Total Construction Emissions 617 SCAQMD CEQA Threshold MTCQ2ei ear 10,000 Exceeds Threshold No CEQ NEPA Threshold MTCQ2ei ear 25,000 Exceeds Threshold No 5er,A d,,d,x B for Cu l EEM.d Mll'JUrl Operational Activities The Proposed Project wound emit greenhouse gases from upstream emission sources and direct sources from the combustion of fuels from worker vehicles and construction equipment during maintenance activities conducted in the recharge basin. As shown in Table 108 operation emissions for the Proposed Project would not exceed the SCAMD threshold. Therefore, potential greenhouse gas emission impacts would be less than significant. Table 108: Estimated Proposed Project Operational GHG Emissions Activity Emissions (MTCO29) Well Development 77 Electrical Energy 4 Total 81 SCAQMD CEQA Threshold U9TGQ2a! ear 10,000 Exceeds Threshold No CEO NEPA Threshold MTCQ2ei ear 25,000 Exceeds Threshold No 5sa Appends, B for CalEEMpa Model Outputs Mid Basin Centennial Park I 'WA' n*yroject Final EIR 8 -19 Section 8 Mitigation Measures No mitigation measures required. Level of Impact Less than significant 8.9 Coastal Zone Management Act Is any portion of the project site located within the coastal zone? Z No. The project is not within the coastal zone. The project area is located approximately 7 miles inland of the Pacific Ocean and outside of the coastal zone. Therefore, the Mid Basin Centennial Park Injection Well Project would not be in conflict with the Coastal Zone Management Act. Mitigation Measures No mitigation measures required. Level of Impact No adverse impact, 8.10 Coastal Barriers Resources Act Will the project impact or be located within or near the Coastal Barrier Resources System or its adjacent wetlands, marshes, estuaries, inlets, and near-shore waters? Note that since there is currently no Coastal Barrier Resources System in California, projects located in California are not expected to impact the Coastal Barrier Resources System in other states. If there is a special circumstance in which the project may impact a Coastal Barrier Resource System, indicate your reasoning below. Z No. The Proposed Project would not impact or be located within or near the Coastal Barrier Resources System or its adjacent wetlands, marshes, estuaries, i:nlets, and near-shore waters. According to the United States Fish and Wildlife Service Official Coastal Barrier Resource System Maps there are not any coastal barriers within or near the project area. Therefore, the Mid Basin Centennial Park Injection Well Project would not be in conflict with Coastal Barrier Resources Act. Mitigation Measures No mitigation measures required. Level of Impact No adverse impact Mid Basin Centennial Park I gdn*ll Project Final EIR, 8-20 4 Section 8 8.11 Farmland Protection Policy Act Is any portion of the project located on important farmland? 9 No. The project will not impact farmland. The project area is located in highly urbanized area within the City of Santa Ana. The project area and surrounding area does not contain any existing agriculture land uses. According to the California Farmland Mapping and Monitoring Program, there is no Prime Farmland. Unique Farmland or Farmland of Statewide Importance within the project area. The project areas are zoned for park uses and there are no existing Williamson Act Contracts on properties within the project area. The construction and operation of the Proposed Project would not impact any farmland resources, Mitigation Measures No mitigation measures required. Level of Impact No adverse impact 8.12 Flood Plain Management Is any portion of the project located within a 100-year floodplain as depicted on a floodplain map or otherwise designated by the Federal Emergency Management Agency? 9 No. Provide a description of the project location with respect to streams and potential floodpiains: The primary surface water bodies within the vicinity project area include the Santa Ana River, Greenville Banning Flood Control Channel and Centennial Lake. The project site is located in Flood Rate Insurance Map 06059CO256J. As shown in Figure 2!2- the FEMA Flood Hazard Map for the project area indicates that both Centennial Park and the Heritage Museum are designated Flood Zone D, areas with possible but undetermined flood hazards. The Santa Ana River and the Greenville Banning Flood Control Channel are designated Flood Zone X, areas of moderate flooding between the limits of the 100-year flood and 500-year floods. Potential flood management impacts would be less than significant. Mitigation Measures No mitigation measures required. Level of Impact No adverse impact Q0 � Mid, Basin Centennial Park Project Final EIR 8-21 1. Ae-rlft% Section 8 8.13 Migratory Bird Treaty Act Will the project affect protected migratory birds that are known, or have a potential, to occur on-site, in the surrounding area, or in the service area? Z No. Provide an explanation below. Both Centennial Park and the Heritage Museum contain several trees that provide nesting opportunities for migratory birds. The proposed construction activities at Centennial Park and at the Heritage Museum would not remove any trees that could contain active nests. Therefore, potential direct impact to nesting birds would be avoided. The Proposed Project would involve the operation of heavy equipment at Centennial Park and the Heritage Museum. There is the potential that the operation of the heavy equipment could disrupt the breeding patterns of migratory birds if they are nesting in nearby trees. To minimize noise impacts to nesting birds a 24-foot high noise wall would be provided around each injection well site and construction equipped would be fitted with noise reduction features, such as mufflers and engine shrouds to reduce potential noise impacts to nesting birds. With the implementation of Mitigation Measures BIO-I and BIO- 2 potential significant adverse impacts to migratory birds would be reduced to a less than significant level. Mitigation Measures B10-1: At each well site a 24 foot noise wall would be provided around the work area to minimize noise impacts. BIO-2: All heavy equipment will be equipped with noise reduction features, such as mufflers and engine shrouds. Level of Impact after Mitigation Less than significant adverse impact with Mitigation Measure B10-1 and 610-2 8.14 Protection of Wetlands Does any portion of the project boundaries contain areas that should be evaluated for wetland delineation or require a permit from the United States Army Corps of Engineers? Wetland Waters are a subset of jurisdictional Waters of the U.S. and! the State. Generally, wetlands are lands where saturation with water is the dominant factor determining the nature of soil development and the types of plant and animal communities living in the soil and on its surface. Presently, there is no single definition of wetlands recognized by the state and the federal government However, the state and federal definitions do share common terms and concepts. For purposes of this classification, wetlands must have one or more of the Mid Basin Centennial Park roject Final Section 8 following three attributes: (1 ) at least periodically the land supports hydrophytes; (2) the :substrate is predominantly undrained hydric soil; and (3) the substrate is non-soil and is saturated with water or covered by shallow water at some time during the growing season of each year. Waters of U.S./State Assessment A wetland assessment was conducted on the project site in accordance with the Regional Supplement to the U.S. Army Corps of Engineers Weiland Delineation Manual Arid Region West. Based on the U.S. Army Corps of Engineers Wetland Delineation Manual, a three parameter approach was used to identify wetland Waters of the U.S. These three parameters include; (1) the presence of wetland vegetation, (2) the presence of wetland hydrology and (3) the presence of hydric soils. The Proposed Project involves three primary construction activities, Placement of the Water Supply Pipeline across the Santa Ana River Edinger Avenue Bridge, Construction of the water supply and back flush pipelines, 4 injection wells and 2 shared structures at Centennial Park. A summary of the wetland parameters at the locations where the construction activities would occur are shown in Table 109. Table 109: Summary of Wetland Parameters Activity Presence of Presence of Presence Wetland w9liland wetland of hydric Dell;OrralhAtllon vegetation hydrology soils. Santa Ana River Edinger No No No Not Present Avenue Bnde Crossin Construction of the water No No No Not Present supply /back flush pipelines, injection wells and shared structures Heritage MuseUrn No No No Not Present Montonng Well Santa Ana River Edinger Avenue Bridge Crossing The proposed water supply pipeline would be extended across the nose piers of the Santa Ana River Edinger Avenue Bridge to the Centennial Park injection well sites. This segment of the Santa Ana River is concreted lined and void of vegetation. The placement of the pipeline would be above the ordinary high water mark and would not involve any activities that would impact Waters of the U.S. /State or Wetland Waters of the U.S,/State. Mid Basin Centennial Park 28162 , Protect Final EIR 8-23 Section 8 Construction of the Water SupplylBack flush Pipelines, Injection Wells and Shared Structures The proposed well sites, water supply pipeline alignment and shared communication structures would be constructed on existing paved parking areas and roads or within the footprint of existing structures. No Waters of the U.S. /State or Wetland Waters of the U.S./State are located in the area where these components of the Proposed Project would be constructed. The Proposed Project includes the construction of back flush pipelines that would discharge well water into Centennial Lake and the Greenville Banning Flood Control Channel. The back flush pipeline to Centennial Lake would tie into an existing wet well that is formerly used to irrigate the landscape at Centennial Park. The construction of the back flush pipeline to Centennial Lake would not impact waters of the U.S. or State. The back flush pipeline to the Greenville Banning Flood Control Channel would discharge into an existing gutter catch basin and then drain into the Greenville Banning Flood Control Channel. The construction of the back flush pipeline to Greenville Banning Flood Control Channel would not impact waters of the U.S. or State. Heritage Museum Monitoring Well The area of construction impact would occur on a disturbed upland area that is presently used as a parking area. There are no Waters of the U.S./State or Wetland Waters of the U.S./State located in the area where the monitoring would be constructed. Mitigation Measures, No mitigation measures required. Level of Impact No adverse impact 8.15 The Wild and Scenic Rivers Act Is any portion of the project located within a wild and scenic river? 9 No. The project is not located near a wild and scenic river. The project area is located in the Santa Ana River Watershed. Within the Santa Ana River Watershed there are no Wild and Scenic Rivers, Therefore, the construction and operation of the Mid Basin Centennial Park Injection Wells Project would not result in adverse impacts to any wild and scenic rivers. Mid Basin Centennial Park f6tn'*6Project Final EIR 8-24 Section 8 Mitigation Measures No mitigation measures required. Level of Impact No adverse impact 8.16 Safe Chinking Water Act, Sole Source Aquifer Protection Is the project located in an area designated by the United) States Environmental Protection Agency, Region 5, as a Sole Source Aq!uifer? 0 No. The project is not within the boundaries of a sole source aquifer. The closest sole source aquifer would be Campo /Cotton Creek Aquifer in San Diego County. Therefore, the construction and operation of the Mid Basin Centennial Park Injection Well Project would not result in adverse impacts to any sole source aquifers. Mitigation Measures No mitigation measures are required. Level of Impact No adverse impact. 8.17 Environmental Justice Does the project involve an activity that is likely to be of particular interest to or have particular impact upon minority, low - income, or indigenous populations, or tribes? 9 No. Selecting "No" means that this action is not likely to be of any particular interest to or have an impact on these populations or tribes. Explain. The purpose of the Mid Basin Centennial Park Injection Well Project is to increase groundwater supplies within the Change County Groundwater Basin to ensure that adequate amounts of underground water are available for Orange County residents including low - income households. By maintaining adequate groundwater supplies, less water would have to be imported into Orange County which is significantly higher in costs and which could have a higher economic impact on lower income households. The implementation of the Mud Basin Centennial Park Injection Wells Project would increase groundwater supplies and would result in beneficial impacts to Change County residents including lower income households. Mid Basin Centennial Park Deed *6Project Final Elks 8 -25 Section 8 Mitigation Measures No mitigation measures required. Level of Impact No adverse impact Mid Basin Centennial Park Ae-1196 Project Final EIR 8-26 Section 9 Orange County Water District Daniel Bott EiR Project Manager Ben Smith Project Engineer David McMichael Project Biologist Li Li Project Hydrogeologist Stephen Strand GIS Support Darla CiriHo Administrative Support BonterralPsomas James Kurtz Air, Greenhouse Gas Analysis Patrick Maxon Cultural Resources Analysis Vista Environmental Greg Tonkkovich Noise Analysis Leighton Associates Djan Chandra Geotechnical Analysis Urban Crossroads Carleton Waters Traffic Analysis Fusco Engineering Ian Adams Storm Water Management Mid Basin Centennial Park 1-genkjProject Final EIR 9-1 Section 10 Bonterra/Psornas , Orange County Water District Mid Basin Centennial Park Injection Wells Project Air Quality and Greenhouse Gas Report, September 2015. Bonterra/Psomas , Orange County Water District Mid Basin Centennial Park Injection Wells Project Cultural Resources Report, September 2015. California Department Fish and Game Natural Diversity Database, Accessed June 2015, California Department of Transportation Scenic Highways Prograrn Web Site Access, September 2015. California Environmental Quality Act. 2015. California Environmental Quality Act, State CEQA Guidelines, 2015. California Farmland Mapping Monitoring Program, Web Site Access September 2015. California Geologic Survey Seismic Hazard Zone Map Newport Quadrangle, Accessed September 2014. California Native Plant Society Inventory of Rare and Endangered Plants Database, Accessed June 2015, California Water Code, 2014, City of Santa Ana General Plan Site Access September 2015. City of Santa Ana Municipal Code September 2015, County of Orange Model Water Quality Management Plan, 2011, County of Orange, 0'terrn municipal NPDES permit for Areawide Urban Storm Water Runoff, 2014. EEI Phase I Environmental Site Assessment, Orange County Water District Micle basin Centennial Part injections Well Project, September 2015, Federal Transit Agency, Noise Associated with Typical construction Equipment, 1995. Federal Transit Agency, Transit Noise and Vibration Assessment, 2006. Leighton Consulting, Geotechnical Exploration Report Orange County Water District Mid Basin Centennial Park Injection Wells Project, October 2015. John Wayne Airport Environs Land Use Plan, 2014. Mid Basin Centennial Park �1,gdn: ffroject Final El R Section 10 Melville C. Branch and R. Dale Boland, Noise Levels and Human Response, 1970. National Water Research Institute Santa Ana River Water Quality and Health Study, 2004, Orange County Water District Groundwater Management Plan, 2014. Orange County Water District Mounding Impact technical Memorandum, 2010 and 2011. Regional Water Quality Control Board, Santa Ana River Basin Plain, January 1995, Urban Crossroads, Orange County Water District Mid Basin Centennial Park Injection Wells Project Traffic Study. U.S. Army Corps of Engineers List of Wetland Plants, 2008. U.S. Army Corps of Engineers Regional Supplement to the Corps of Engineers Wetland Delineation Manual Arid West Region, September 2008. Vista Environmental, Noise Impact Analysis Mid Basin Centennial Park Injection Wells Project. Mid Basin Centennial Park �Ijg&nf _ dyroject Final EIR 10-2 25C -384 Orange County Water District Mid Basin Centennial Park Injection Well Project Draft Environmental Impact Report Response to Comments /Mitigation Monitoring Program State Clearinghouse No. 2015061055 Prepared By Orange County Water District 18700 Ward Street Fountain Valley, CA 9270$ ,F AX Contact: Daniel Bott April 2016 Exhibit D 25C -385 Table of Contents Section Page SECTION 1.0 PURPOSE ..................................... .... .... - ............ -11, ........ 1-1 SECTION 2.0 CLARIFICATIONS TO DRAFT EIR ................... ..................... 2-1 SECTION 3.0 RESPONSES TO COMMENT LETTERS .......... ..................... 3-1 SECTION 4.0 MITIGATION MONITORING PROGRAM. ....................... ....... 4-1 4.1 Introduction ................. ...................... ............. _ ............ .............. ..... -4-1 4.2 Project Description .............................. ............... ........................ ........ 4-1 4.3 Development of Mitigation Monitoring Reporting Program ...................4 -2 4.4 Requirement to Approve and implement Mitigation Monitoring Plan ....4 -2 Table Table 1: List of Comment Letters.. ..... ............................................................... 3-1 Table 2: Mid Basin Centennial Park Injection Well Project ................... ........... .4-3 OCWD Mid Sasin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 25C-386 Section 1 SECTION 1.0 PURPOSE In compliance with the requirements of the California Environmental Quality Act (CEQA) Public Resources Code Section 21000 et seq. and the CEQA Guidelines, the Orange County Water District (OCWD) has prepared a Draft Environmental Impact Report (Draft EIR) for the Mid Basin Centennial Park Injection Well Project (State Clearinghouse No. 2015061055). The Draft EIR was circulated for public review from February 3, 2016 to March 18, 2016. During the public review period, comments were received on the Draft EIR and have been addresses in the Mid Basin Centennial Park Draft EIR Response to Comment Document. Section 2.0 of the Response to Comment Document identifies clarifications to the Draft EIR that were identified during ther public review period. Section 3,0 provides responses to comments received on the Draft EIR. Section 4.0 is the Mitigation Monitoring and Reporting Program for the Mid Basin Centennial Park Injection Well Project. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 1 -1 25C -387 Section 2 SECTION 2.0 CLARIFICATIONS TO DRAFT EIR The following are clarifications to the Final EIR. The clarifications do not identify new significant impacts or provide new information that would change a less than significant impact to a significant impact in the Draft EIR. The clarifications are identified in underline. HydrologyMater Quality Page 5 -114, Section 5.7.3 Thresholds of Significance has been clarified and revised to read as follows; 5.8.3 Thresholds of Significance Page 5 -11, 5.7.4 Project Impacts has been clarified and revised to read as follows; 5.8.4 Project Impacts Page 5 -131 Alternative 2: Typically, the back flushing operations would occur weekly or every two weeks and could discharge up to 70,000 gallons of well water per minute into Centennial Lake. The above language gas been clarified and revised as follows; Typically, the back flushing operations would occur weekly or every two weeks and could discharge up to 3, 500 gallons of well water per minute into Centennial Lake. 4. Page 5 -131 Alternative 2: Assuming a worst case condition that four wells are back flushed into the Greenville - Banning Flood Control Channel, a total of 7.8 cfs of well water would be discharged into the channel. The above language has been clarified and revised as follows; Assuming a worst case condition that four wells are back flushed into the Greenville- Banning Flood Control Channel, all four wells would produce a total of 7.8 cfs of well water discharged into the channel. 5. Appendix C Biological Conditions Report, Page 5 -1, Heritage Museum In coordination with Heritage Museum staff the groundwater from the monitoring well would be discharged into the adjacent patch of riparian vegetation. The discharged groundwater be an additional source of irrigation for the riparian vegetation and would have a long term beneficial impact, especially during dry months when there is little rainfall. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to CommentslMitigation Monitoring Program 2 -1 25C -388 Section 2 The above language has been clarified and revised as follows; Monthly, the monitoring_ well at the Heritage Museum site would be back flushed as part of the sampling activities. An average of 4,000 or 5,000 gallons of water would either be containerized or discharged in the local storm water system and then into the Greenville- Bannina Flood Control Channel. 6. Appendix G preliminary Non - Priority Project Water Quality Plan The Preliminary Non - Priority Project Water Quality Plan, Page 13, Worksheet Runoff Coefficient C As shown in Attachment 1, the worksheet on Page 13 of the Preliminary Non - Priority Project Water Quality Plan has been clarified and revised to reflect a runoff coefficient of .90, OCWD Mid Basin Centennial Park Injection Well Project Draft CIR Response to Comments /Mitigation Monitoring Program 2 -2 25C -389 Attachment 1 Mid -Basin Injection Welis Project at Centennial Park December 1, 2015 Worksheet C: Capture Efficiency Method for Volume- Based, Constant Drawdown BMPs Step T: Determine the design capture storm depth used forcalculaffng volume 1 Enter design capture storm depth from Figure Ill, 1, d (inched d= 0.75 inches Enter calculated drawdown time of the proposed BMP 2 based on equotion provided in applicable BMP Fact Sheet, T= 7 hours 7- (hours) Using Figure 111.2, determine the 'fraction of design capture 3 storm depth" of which the BMP drowdown time (1} line X, = 0.43 achieves 80% capture efficiency, X, 4 Enter the effect depth of provided HSCs upstream, a-C (Inches) (Worksheet A) dnsc= 0 inches 5 Enter capture efficiency corresponding to citisc, Yy (Worksheet A) Yr= 0 Using Figure 111.2, determine the fraction of "design capture 6 storm depth" at which the drnwdown time (T) achieves the Xz= 0 equivalent of the upstream capture efficiency(YZ), Xz 7 Calculate the fraction of design volume [hot must be {radian= 0.43 provided by BMP, fraction =Xi - Xz 8 Calculate the resultant design capture storm depth (inches), fraction x d dt n " "— 0.32 inches Sfep 2; Calculate the DCV I Enter Project area tributary to BMP (s), A (acres) A= 0, 12 acres 2 Enter Project Imperviousness, imp (unitless) impm 0,61 3 Calculate runoff coefficient, C= (0,75 gimp) + 0.15 C= 0.6075 Calculate runoff volume ,Vm,,s„ = xAx43560x 4 (1 /i2)} Ve�g,= 84,1 "fl supporNirtg Calculations Describe system, Permeable Concrete Sidewalk with 6 -Inch rock reservoir, which provides an effective depth of 0, 175 fl. Therefore: BMP Surface Area Needed = 84.1 cu -ft / 0. t 75 ft = 480.8 square feet. Provide drawdown time calculations per applicable BMP Pact Sheet: Drowdown time is based on 6 -Inch oggregafe base depth for retention of the DCV in the permeable concrete sidewalk section. At 35% porosity, fhe effective depth is 2,1 inches or 0. f 75 feet, which will drawdown In 7 hours with a design Infllfro4on rate of 0.3 inches /hour. ((0.5 ft " 0.35)'12 in.) / 0.3 In /hr —7 hours. Orange County Water District 13 City of Santa ,Ana 25C -390 Section 3 SECTION 3.0 RESPONSES TO COMMENT LETTERS In accordance with Section 15088 of the CEQA Guidelines, the OCWD as the Lead Agency has evaluated the comments received on the Mid Basin Centennial Park Injection Well Project Draft EIR. In accordance with CEQA Guidelines, the OCWD has prepared responses for each comment received. Below is a listing of the public agencies that provided comments on the Draft EIR. Each comment letter and individual comments are numbered so that can be cross referenced with responses. Table 1: List of Comment Letters Letter Sender ., .,.:. 'Date Received. A California State Clearinghouse March 15, 2016 B California Department of Transportation January 30, 2015 C County of Orange Public Works February 2, 2015 OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to CommentslMltlgatlon Monitoring Program 3 -1 25C -391 Section 3 Comment Letter A California State Clearinghouse March 15, 2016 Comment A -1 The submitted comment acknowledges that the Draft Environmental Impact Report complies with the State Clearinghouse review requirements, pursuant to the California Environmental Quality Act. Response A -1 Comment noted. - -- OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 3 -2 25C -392 Go 11� ST,XrE CLEARINGHOUSE AND PLANNING UNIT 'r EDMUND G, BROWN JR. Govextran March 15,206 Daniel Boit Orange County Water District 18700 Ward Street Santa Ana, CA 92708 Subject: Mid Basin Centennial Park Injection Wells Project SCH#: 201506/055 Dear Daniel BotL KEN A14ZK DnE mR The State Clearinghouse submitted the above named Draft GIP to selected state agencies for review. The 1 raviow period closed on March 14, 2016, and no state agencies submitted comments by that date. This letter acknowledges that you have complied with the State Clearinghouse review requirements for draft pqr environnsantal documents, pursuant to the California Environmental Quality Act, Please call the State Clearinghouse at (916) 445 -0613 if you have any questions regarding the ^'°"'"""" environmental review process. If you have a question about the above -named project, please refer to the Yen -digit State GearmOouse number when contacting this office, Sincerely, , SC �r X" / Morgall Director, State Clearinghouse 140010th Street P,O, Box 3014 Sacramento, California 95812-341 (916) 445.0613 FAX(916)323-3018 www.opr.ea,gov 25C -393 Section 3 Comment Letter B California Department of Transportation February 17, 2016 Comment B -1 The submitted comment letter states that the California Department of Transportation has no comments on the Draft Environmental Impact Report. Response B -1 Comment noted. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 3 -4 25C -394 ST, %IZOE tfr�RNl� DEPARTMENT OF TRANSPORTATION DISTRICT 12 3347 MIC €ELSON DRIVE, SUITE 100 IRVINE, CA 92612.8894 PHONE (949) 724.2000 FAX (949) 7242019 TTY 71 t www,dtlt,co.gov Febmary 17, 2016 Daniel Bott Orange County Water District 18700 Ward Street Fountain Valley, CA 92708 Dear Mr, Rott: Pile: IGR./CEQA SCI -I #: 2015061055 IGR Log 9; 4417 -B SR: I -405 9 Serroaa Dralght Serious drought, Help Jq" rvaleo Thank you For the opportunity to review and comment on the Draft Environmental Impact Report for the Mid Basin Centennial Park Injection Wells Project which will require the construction and operation of 4 underground injection wells at Centennial Park and the construction and operation of a monitoring well at the Heritage Museum, Centennial Park is located at 3000 West Ettinger Avenue within the City of Santa Ana. Heritage Museum is located at 310I West Harvard Street within the City of Santa Ana. The nearest State routes to the project.. sites is 1 -405, Caltrans is a commenting agency on this project and has no comment at this time. However, in the event of any activity in Caltrans' right of way, an encroachment permit will be required, Please continue to keep us informed of this project and any future developments that coulc —� potentially impact State transportation facilities. If you have any questions or need to contact us, please do not hesitate to call Maryam Molavi at (949) 724 -2241, Sincerely, BUG�.`�- MAUREEN EL IIARAKE Branch Chief, Regional- Community - Transit Planning District 12 C: Scott Morgan, Office of Planning and Research "Prwfde a sap, s1,slajnahle, irnegrnled and efvled frampnrlan6" .qy fern la enhance Ca(t%arnirr'.e ecannmy and fi whill," 25C -395 Section 3 Comment Letter C Orange County Public Works March 18, 2016 Comment C -1 The submitted comment requests that the Orange County Water District (OCWD) consult with the Orange County Public Works Environmental Resources to obtain recommendations on water quality issues associated with the back flushing of water from the injection wells into the Greenville- Banning Channel. Response C4 Page 5 -132 of the Draft Environmental Impact Report identifies Mitigation Measure HWO -1, which requires that OCWD obtain an encroachment permit from the County of Orange to allow the discharging of back flushed wafter from the injection wells into the Greenville- Banning Channel. As part of the coordination for the encroachment permit OCWD would coordinate with Orange County Public Works Environmental Resources on water quality issues associated with the back flushing of water from the injection wells into the Greenville- Banning Channel. Comment C -2 The submitted comment identifies that based upon personal communication with OCWD it was identified that an incorrect amount of water (70,000 gallons per minute) was referenced in the Draft EIR, as the amount of water that would be periodically discharged from the injection wells. The submitted comment is correct. The amount of water that would be discharged would be 3,500 gallons per minute per well. This amount is substantially lower and would not increase flood capacity impacts or potential flood risks within the Greenville - Banning Flood Control Channel, Comment C -3 The submitted comment identifies that the section headings 5.7.3 Thresholds of Significance and 5.7,4 Project Impacts are mislabeled and should be referenced as section headings 5.8.3 Thresholds of Significance and 5.8.4 Project Impacts. Response C -3 The comment is correct. The headings were inadvertently mislabeled. As shown in Section'2.0, the Final EIR has been revised to reflect the correct section headings. Section 5.7.3 Thresholds of Significance has been clarified and revised to read as follows; OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 3 -6 25C -396 Section 3 5.8.3 Thresholds of Significance Section 5.7.4 Project Impacts has been clarified and revised to read as follows; 5.8.4 Project Impacts Comment 4 The submitted comment identifies that worksheet on Page 13 of the Preliminary Non - Priority Project Water Quality Plan incorrectly identifies runoff coefficient as .6075. The correct coefficient value is .90. Response 4 The comment is correct. The runoff coefficient was inadvertently identified as .6075. The worksheet on Page 13 of the Preliminary Non - Priority Project Water Quality Plan has been revised to reflect a runoff coefficient of .90. The analysis in the Preliminary Non - Priority Project Water Quality Plan was based on a runoff coefficient of .90. Therefore, no additional changes to Preliminary Non - Priority Project Water Quality Plan are required. The infiltration strategies and storm water control measures identified in the Preliminary Non- Priority Project Water Quality Plan would reduce long -term storm water management impacts to a less than significant level. OCWD Mid Basin Centennial Park Injection Well Project Draft OR Response to Comments(Mitigation Monitoring Program 3 -7 25C -397 n . ;.,1'ublicWorks rnteerffy, Acaounteb /Iffy, Srrvlee, rrjref Shane L, alteby, Director March i8, 2016 Mr. Danlel Bott, Principal Planner Orange County Water District 18700 Ward Street Fountain Valley, California 927011 Net -15 -021 Subject: Recirculated Notice of Availability of a Draft Environmental Impact Report for the Orange County Water District Mid Basin Centennial Park Injection Well Project Dear Mr. Bott: The County of Orange has reviewed the Recirculated Notice of Availability of a Draft Environmental Impact Report for the Orange County Water District Mid Basin Centennial Park Injection Well Project and offers the following comments; Flgod Programs° - 1. Prior to final design of the Mid Basin Centennial Park Injection Wells Project, please consult the Orange County Public Works /Environmental Resources service area to obtain their -° recommendations regarding the water quality Issues associated with back flushing waters discharging into the Greenville - banning Channel (D03). If you have any questions or need clarification please do not hesitate to contact Robert McLean at (714) 647 -3951 or Anna Brezezicki at (714) 647 -3989. Enyironmantal Resources.• 1. Section 5.8, Hydr0l0gy/Water Quality: Sub - Section 5.8.4, Project impact HWQ3, dessoribes the Injection well backflushing operations at occurring weekly or every two weeks and having the potential to discharge up to 70,000 gallons of well water per minute Into Centennial Lake (page ✓J 5 -131). It was confirmed with OcWD Project Engineer, Ben Smith, that this discharge rate is incorrect. The correct discharge rate should be 3,500 gallons per minute for 20 minutes per well (personal communication with Ban Smith on 3/8/16). The EIR should be updated to include the corrected discharge rate. 2, Sections 5.83, Threshold of Signiflcance (page 5 -114) and 5.8.4, Project impacts (page 5.115): j) These sections are mislabeled as 5.73 and 51.4, respectively. They should be 5.83 and respectively. a n, rt w straal, Santa Ana, CA 62703 P.O, Hat 4048, Suds Am CA 927024M 25C -398 www,acpuhlia ksmm 714,887.8800 1 Infa40CPW. cgay.mm Section 3 SECTION 4.0 MITIGATION MONITORING PROGRAM 4.1 Introduction The following is a Mitigation Monitoring Report Program (MMRP) for the Orange County Water District Mid Basin Centennial Park Injection Well Project prepared pursuant to Section 15097 of the CEQA Guidelines and Section 21081.6 of the Public Resources Code. This MMRP lists all applicable mitigation measures from the Draft Environmental Impact Report for the Orange County Water District Mid Basin Centennial Park Injection Well Project. The appropriate timing of implementation and responsible party are identified to ensure proper enforcement of the mitigation measures from the Draft EIR. 4.2 Project Description Project Location The Centennial Park project site is located at 300 West Edinger Avenue and the Heritage Park project site is located at 3101 West Harvard Street within the City of Santa Ana. Project Description The Project involves the construction and operation of four injection wells and a single monitoring well. Project Objectives Implementation of the Mid Basin Centennial Park Injection Well Project is intended to achieve the following objectives; • Construct the Mid Basin Centennial Park Injection Well Project in location that can readily tie into the existing GWR System pipeline with minimal impacts to the environment. • Provide 12 MGD per day of additional groundwater recharge capacity to the Orange County Groundwater Basin. • Maximize the use of GWR System as the local water supply to replenish the Orange County Groundwater Basin. • Ensure that the operation of the Mid Basin Centennial Park Injection Well Project does not result in permanent loss of usable open space. • Ensure that during construction and operation of the Mid Basin Centennial Park Injection Well Project safety conflicts with students from Godinez High School, Mitchell Child Development Center and from Centennial Education and Day Care Center are avoided. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 4 -1 25C -399 Section 3 • Ensure that the construction and operation of the Mid Basin Centennial Park Injection Well Project is compatible with park facilities. 4.3 Development of Mitigation Monitoring Reporting Program The basic elements of the Mitigation Monitoring and Reporting Program are the mitigation measures identified by each impact category addressed in Section 5.0 of the Draft EIR. The development of the program was based on the following procedures necessary to initiate and complete the monitoring process. • Identification of -the key periods and events in the project implementation schedule. • Identification of the key personnel and agencies responsible for environmental monitoring. • Monitoring of the implementation of the mitigation measures and documentation that the measures have been properly and thoroughly implemented. • Development of the written document on the implementation of all the mitigation measures, identification of any areas of non - compliance, and proposed activities to bring the project into compliance with the mitigation monitoring and reporting program. 4.4 Requirement to Approve and Implement Mitigation Monitoring Plan The OCWD has the authority to require and enforce the provisions of California Resource Code Section 21081.6. The OCWD will be responsible for approving the Mitigation Monitoring and Reporting Program and for preparing the written report documenting the implementation of project mitigation measures. Table 2 summarizes the mitigation measures that have been adopted for the Project, specifies the timing for implementation of each measure and identifies the responsible parties for ensuring implementation and the satisfactory completion of each measure. The procedures for implementing the Mitigation Monitoring and Reporting Program are: Monitoring Procedures 1. An Environmental Monitor, appointed by OCWD, will be responsible for coordinating review of project plans and activities, the construction site, and /or operations to ensure that the mitigation measures are properly and thoroughly implemented through the course of the project. 2. Written documentation that each mitigation measure in Table 2 has been implemented will be prepared. This documentation can be on an OCWD mitigation monitoring checklist or a similar form that clearly indicates the timing or schedule for implementation, whether the measure has, in fact, been implemented, or in the case of OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 4 -2 25C -400 Section 3 measures that are ongoing, that a process has been developed to ensure continued implementation of the measure. Reporting Procedures 1. The Environmental Monitor appointed by OCWD on this project will be responsible for periodically reviewing the program in Table 1 with the OCWD Environmental Compliance Advisor. 2. The Environmental Monitor will prepare a written report for the OCWD documenting the completion of the implementation of all the mitigation measures. For those measures not implemented or for activities that do not fully comply with mitigation measures included in Table 1, an explanation of the areas of noncompliance will be prepared, including a proposal to bring those elements of the project into compliance with the Mitigation Monitoring and Reporting Program. The following table will be used by the Project Manager to enforce mitigation measures during each phase of the Project pursuant to Section 15097 of the State CEQA Statues and Guidelines and Public Resources Code Section 21081.6. Table 2: Mid Basin Centennial Park Injection Well Project Mitigation Monitoring Plan Reporting Program Mrtrgat!on Measure;, " Resporislble far,' ;Momtonng.';, Verificafion Implementation , Aesthetics. All Construction lighting fixtures will be OCWD During shielded by providing side flaps on lights, Construction or providing a temporary drape /wall so that illumination is confined to within the work area. Onsite construction lighting will be arranged so that direct rays will not shine in or produce glare impacts to sensitive receptors. AR -2: if the onsite construction lighting OCWD During creates a light or glare issue for sensitive Construction receptor properties, OCWD will implement corrective measures to resolve the issue. Such corrective measures may include providing additional shielding on light fixtures, relocating lighting fixtures or Increasing the height of the temporary drape/wall. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 4 -3 25C -401 Section 3 Biology BIO.1: Al each well site sound attenuation wall OCWD During will be provided to minimize noise impacts. Construction l To extent feasible all heavy equipment will OCWD During be equipped with noise reduction features, such Construction as mufflers and engine shrouds. Cultural Resources CR -1: A qualified Archaeologist will be retained OCWD During during construction to observe grading activities Construction in the uppermost layers of sediment (sails and younger Quaternary Alluvium) and to salvage and catalogue archaeological resources, as necessary. The designated Archaeologist should be present during the pre -grade meeting to discuss cultural resources sensitivity and to assess whether archaeological resources have the potential to be encountered. The Archaeologist must first determine whether an archaeological resource uncovered during construction is a "unique archaeological resource" pursuant to Section 21083.2(g) of the California Public Resources Code or a "historical resource" pursuant to Section 15064.5(a) of the State CEQA Guidelines. If the archaeological resource is determined to be a "unique archaeological resource" or a "historical resource', the Archaeologist shall formulate a mitigation plan in consultation with the OCWD that satisfies the requirements of the above listed Sections. CR -2: If human remains are encountered during OCWD During excavation activities, all work shall halt in the Construction vicinity of the remains and the County Coroner shall be notified (California Public Resources Code §5097.98). The Coroner will determine whether the remains are of forensic interest. If the Coroner, with the aid of a qualified Archaeologist, determines that the remains are prehistoric, s /he will contact the Native American Heritage Commission (NAHC). The NAHC will be responsible for designating the most likely descendant (Ml who will be responsible for the ultimate disposition of the remains, as required by Section 7050.5 of the California Health and Safety Code. The i shall make OCWD Mid Basin Centennial Parts Injection Well Project Draft BIR Response to CommentslMitigation Monitoring Program 4 -4 25C -402 Section 3 hisiher recommendation within 48 hours of being granted access to the site, If feasible, the recommendation of the MLD shall be followed and may include scientific removal and non- destructive analysis of the human remains and any items associated with Native American burials (California Health and Safety Cade §7050.5). If the landowner rejects the recommendations of the MILD, the landowner shall rebury the remains with appropriate dignity en the property in a location that will not be subject to further subsurface disturbance (California Public Resources Code §5097.98). CR -3: A qualified Paleontologist be notified and OCWD During retained when earth- moving activities are Construction anticipated to impact undisturbed deposits in the Older Quaternary Alluvium on the project site. The designated Paleontologist should be present during the pre -grade meeting to discuss paleontological sensitivity and to assess whether scientifically important fossils have the potential to be encountered The extent of monitoring activities will be determined at the meeting in consultation with the OCWD. If any scientifically important large fossil remains are uncovered during earth- moving activities, the Paleontological Monitor will divert heavy equipment away from the fosslt site until s /he has had an opportunity to examine the remains. Samples of Older Quaternary Alluvium should be collected for processing and examination for very small vertebrate fossils. Geology /Soils GEO -1: Prior to the start of construction OCWD OCWD Prior to will obtain coverage under the General Construction Construction Permit by the State Water Resources Control Board and in compliance with the permit shall file a Notice of intent with the State Water Resources Control Board and prepare and implement Storm Water Pollution Prevention Plan. GEO -2; The final design and construction of the OCWD During Final project will incorporate the geotechnical Design and recommendations provided in the Leighton Construction Consulting Geotechnical Report prepared for the Mid Basin Centennial Park Injection Well Project. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 4 -5 25C -403 Section 3 Hyd rologylWater Quality: i Prior to construction operations OCWD OCWD Prior to will obtain an encroachment permit from the Construction County of Orange that allows for the discharging of groundwater from the Mid Basin Centennial Park Injection Well Into the Greenville Banning Flood Control Channel. HWQ-Y: The final design of the Mid Basin OCWD Prior to final Centennial Park Injection Wells Project will design and incorporate the storm water management during program contained in the approved Mid Basin construction. Centennial Park Injection Well Non - Priority Project Water Quality Plan. HWQ-8: Prior to conducting dewatering activities OCWD Prior to OCVVD will receive NPDES dewatering permit Construction from the Regional Water Quality Control Board. HWQ-A, Prior to construction activities occurring OCWD Prior to along the west and east levees of the Santa Ana Construction River OCWD will obtain an encroachment permit from the County of Orange and 408 permit from the U.S. Army Corps of Engineers. HWQ-5: Prior to placement of the water supply OCWD Prior to pipeline along the nose piers of the Edinger Construction Avenue Bridge OCWD will obtain an encroachment permit from the County of Orange and as part of the permit conditions will coordinate with the County of Orange Flood Operations staff on the design of the water supply pipeline to ensure it does not impede flood maintenance activities along the bridge during flood events. Noise i The project will incorporate the noise OCWD Prior to reduction design features identified in the Mid Construction Basin Centennial Park Injection Well Project EIR1F_A. OCWD Mid Basin Centennial Park Injection Well Project Draft BIR Response to Comments /Mitigation Monitoring Program 4-6 25C -404 Section 8 TrafflclTransportation T -1: Prior to start of pipeline construction OCWD Prior to activities along Edinger Avenue a Traffic Construction Management Plan will be prepared and approved by the City of Santa Ana, The Traffic Management Pier will include traffic control devices and signage to avoid vehicle and pedestrian conflicts from the temporary closing of Edinger Avenue. T -2: Pipeline construction along the Centennial OCWD During Loop will be conducted during the right time Construction hours. Steel plates will be placed over exposed trenches at the end of work activities to allow vehicle access during the day, T -3: A Traffic Control Plan with traffic control OCWD During devices and signage will be implemented at Construction Parking Area 2 directing student drop -offs to the turn - around located north of Centennial Park Skate Park T -4: A Construction Safety Plan will be prepared OCWD During and implemented that will include fencing around construction work areas to prevent public access and the use of flag man if needed to direct students and pedestrians away from construction equipment and activities. T -5: During construction activities a signage OCWD During program will be implemented that will identify Construction parking areas where available. OCWD Mid Basin Centennial Park Injection Well Project Draft EIR Response to Comments /Mitigation Monitoring Program 4 -7 25C -405 25C -406