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HomeMy WebLinkAbout25I - AGMT - OCWD ASSESSMENTREQUEST FOR COUNCIL ACTION CITY COUNCIL MEETING DATE JANUARY 20, 2015 TITLE; AGREEMENT WITH ORANGE COUNTY WATER DISTRICT FOR A LIMITED -TERM PARTIAL BASIN EQUITY ASSESSMENT (BEA) EXEMPTION {"ATEGIC-P AN NO. 6 A C) CITY MANAGER RECOMMENDED ACTION CLERK OF COUNCIL USE ONLY: 29K R 0 As Recommended ❑ As Amended Ordinance on 1" Reading L Ordinance on 2ntl Reading ❑ Implementing Resolutlon ❑ Set Public Hearing For. CONTINUED TO FILE NUMBER Authorize the City Manager and Clerk of the Council to execute an agreement with the Orange County Water District, subject to nonsubstantive changes approved by the City Manager and City Attorney, for a limited -term partial basin equity assessment exemption on water produced by Well 32 above the Basin Pumping Percentage. Well 32, located in Morrison Park, is a City asset currently valued at $3.5 million. However, this groundwater well was taken offline seven years ago due to water nitrate levels that exceeded the California Department of Public Health established maximum level of 45 mg /L. Approval of this recommended action will allow the City to complete the necessary capital improvements and bring the well back into service. The Public Works Agency operates a system of groundwater wells that produce high - quality, potable water from the Orange County groundwater basin. The primary responsibility of the Orange County Water District (OCWD) is to manage conjunctive use of this vast groundwater basin under northern and central Orange County, which supplies water to more than 20 cities and water agencies and serves more than 2.3 million Orange County residents. In accordance with OCWD pumping limits, roughly 70 percent of the water supplied to Santa Ana residents and businesses comes from this groundwater pumping. All agencies that produce water from the groundwater basin pay a Replenishment Assessment (RA) fee to OCWD based on the quantity of water produced. If an agency pumps beyond the limits established by OCWD, a Basin Equity Assessment (BEA) fee is added. The BEA is much higher than the RA and is meant to penalize an agency for over- pumping. Although water produced from groundwater pumping is more cost effective than imported sources, OCWD imposes pumping limits in order to manage the limited supply of potable groundwater. 251 -1 Agreement with OCWD for Partial Basin Equity Assessment Exemption January 20, 2015 Page 2 In March 2013 the City retained Tetra Tec, Inc., to study options for nitrate treatment and provide a cost analysis for restoring the service of Well 32. After the evaluation was completed, a water blending alternative was recommended. The blending alternative was the most cost effective and is one of the technologies currently accepted by the California Department of Public Health. The estimated capital cost for these improvements is $4.6 million, which includes well rehabilitation, well house reconstruction, new electrical and mechanical appurtenances, and construction of a water transmission line to the nearby Garthe Pump Station. On May 8, 2013, the City requested that the Orange County Water District (OCWD) consider and support the implementation of the high nitrate mitigation and remediation of Well 32 through a partial exemption from payment of the BEA. Under the proposed agreement, OCWD would remove pumping limits on this more cost - effective water source (i.e. pump more than 70 percent) and partially exempt the City from BEA fees. It is anticipated that the City will fully recover the estimated $4.6 million capital cost within a four -year period. The benefits of bringing Well 32 back into service also include providing an additional groundwater source to the City's water system, allowing the City to distribute groundwater pumping throughout the water system, and reducing wear and tear on other City groundwater wells. On July 24, 2013, the OCWD Board directed their staff to prepare an agreement with the City for a Basin Equity Exemption for Well 32 for future Board action. The OCWD Board will be considering this agreement in its regularly scheduled meeting on January 21, 2015. Staff is recommending execution of this agreement in order to realize the significant investment already made in Well 32, restore it to service, and continue to utilize and benefit from the asset. STRATEGIC PLAN ALIGNMENT Approval of this item supports the City's efforts to meet Goal #6 Community Facilities & Infrastructure; Objective #1 (establish and maintain a Community Investment Plan for all City assets), Strategy C (invest resources and technology to extend the service life of existing infrastructure to protect the City's investment and support a high quality of life standard). ENVIRONMENTAL IMPACT There is no environmental impact associated with this action 251 -2 Agreement with OCWD for Partial Basin Equity Assessment Exemption January 20, 2015 Page 3 FISCAL IMPACT Although Water Enterprise Capital Improvement funds have not been allocated for this project in the FY 14/15 Capital Improvement Program, funds to proceed with the design and preparation of plans, estimated at $620,000, are available in the Water Enterprise Capital Construction Fund (Account 06617647- 66301). Funding for the construction of these improvements will be allocated in future Capital Improvement Program budgets. Fr d Mousavipour Executive Director Public Works Agency FM /NS /RR Exhibits: 1. Agreement with OCWD 2. Preliminary Engineering Study APPROVED AS TO FUNDS AND ACCOUNTS: �\&\- & S �` Francisco Gutierrez Executive Director Finance & Management Services Agency 251 -3 251 -4 LIMITED TERM PARTIAL BASIN EQUITY ASSESSMENT EXEMPTION AGREEMENT BETWEEN ORANGE COUNTY WATER DISTRICT AND CITY OF SANTA ANA (Santa Ana Well No. 32) This LIMITED TERM PARTIAL BASIN EQUITY ASSESSMENT EXEMPTION AGREEMENT (the "Agreement ") is entered as of January _, 2015 by and between the ORANGE COUNTY WATER DISTRICT, a special governmental district organized and existing pursuant to the Orange County Water District Act, Chapter 924, Statutes of 1933, as amended ( "OCWD "), and the CITY OF SANTA ANA, a municipal corporation organized and existing under the laws of the State of California ( "City "). RECITALS A. Approximately two - thirds of all drinking water currently used within northern and central Orange County is provided from groundwater by OCWD. Inasmuch as Orange County is located in a semi -arid area, it is essential that all reasonable efforts be put forth to protect the quality of groundwater supplies and to provide for maximum utilization of that resource. B. The United States Environmental Protection Agency ( "USEPA ") and the State of California Department of Public Health ( "CDPH ") have adopted primary drinking water standards, which include limits for nitrate. Water containing nitrate concentrations in excess of 45 mgL (expressed as NO3) have been determined by USEPA and CDPH not to be suitable for municipal or domestic purposes without treatment. C. The City operates a public water system for the purpose of delivering potable water to its customers, and obtains most of its water by pumping groundwater from wells for delivery to its customers. The City, as well as other groundwater producers within the boundaries of OCWD, has lost the use of some of its groundwater wells due to the presence of nitrate in quantities exceeding USEPA and CDPH drinking water standards. Santa Ana Well No. 32 ( "Well 32 "), located at Morrison Park near the intersection of Memory Lane and Westwood Avenue in Santa Ana, has the capacity to produce up to 4,000 acre feet per year of groundwater; however, the City has discontinued production of groundwater from Well 32 in 2005 due to its low operational efficiencies and high nitrate concentrations. D. The City recently retained an engineering consulting firm to evaluate and recommend alternatives to reduce high nitrate levels in the water produced by Well 32. After evaluating alternatives, the City has decided to pursue a water blending alternative as the most economical option. The City proposes to blend high nitrate water produced by Well 32 with low nitrate water produced by City of Santa Ana Wells 36 and 39 ( "Wells 36 and 39 ")in the reservoirs located at the John Garthe Pump Station Complex. The blending alternative mitigates the high nitrate levels and allows the City to utilize the groundwater pumping capacity of Well 32 and place the well back in to service (the "Project "). The City's preliminary cost estimate for the Project is $4,600,000 which includes $920,000 in contingencies (the "Project Cost"). The City and OCWD will revisit the Project Costs once the construction bids are received to ensure the program financials are consistent with this Agreement. OCWD has determined that the City's Exhibit 1 130022499 -0003 2.1 a03/29 84874 /l2 251-5 848745.1 conduct of the Project will remove contaminants from the groundwater basin and increase available groundwater supplies within OCWD's boundaries. E. The Legislature of the State of California has vested in OCWD the statutory responsibility to manage, regulate, replenish and to protect the quality of the groundwater supplies within the boundaries of OCWD. F. In April of each year, the Board of Directors of OCWD acts in accordance with Section 31.5 of the Orange County Water District Act ( "OCWD Act ") to find, determine and establish the basin production percentage (the "BPP "), and sets basin equity assessments (each, a "BEA ") for each producer within OCWD for the period from July lst through June 30th of the next succeeding year. G. Section 2.6.(1.) of the OCWD Act authorizes OCWD to enter into an agreement with the owner operating a groundwater production facility within OCWD's boundaries to increase the production of groundwater in lieu of water from an alternative non - tributary source for the purpose of removing contaminants or pollutants from the groundwater basin, and paying from OCWD funds that portion of the cost of groundwater production that will encourage the production for beneficial use of the polluted or contaminated groundwater that is impairing the quality of the water supplies within OCWD. H. OCWD and the City mutually desire to enter into this Agreement pursuant to Section 2.6.(1.) of the OCWD Act to set forth the specific terms and conditions under which the City will conduct the Project and remove nitrate - impaired groundwater from the Orange County groundwater basin by producing groundwater from Well 32 and blending that groundwater with non - impaired groundwater produced from the Wells 36 and 39 for ultimate distribution to City customers for potable beneficial uses, with the City recovering the Project Cost by means of a partial exemption of that water from the payment of the BEA. OCWD and they City understand and agree that this Agreement does not and cannot become effective unless and until the City files a petition for a partial exemption from the BEA of the water produced from Well 32, and the Board of Directors of OCWD approves such a partial BEA exemption, in accordance with Section 38.1 of the OCWD Act. EXECUTORY AGREEMENTS NOW, THEREFORE, in consideration of the facts recited above and the covenants, conditions and promises contained herein, and subject to this Agreement taking effect in accordance with Section 5 below, OCWD and the City hereby agree as follows: SECTION 1. LIMITED TERM NITRATE REMOVAL PROJECT 1.1. Once the Project has been constructed, the Project Costs have been reviewed to ensure they are consistent with this agreement, and the City has filed with OCWD a petition pursuant to Section 38.1 of the OCWD Act (as outlined in Section 5), this Agreement will be implemented in the first fiscal year after the Project is complete, beginning July 1" of that year, and last for up to six fiscal years through June 30th of the last year (the "Project Term "). During the Project Term, the City may produce groundwater in an amount equal to the BPP for that given year, plus additional groundwater production from Well 32, provided that all of the City of Santa Ana Agreement XX..I a08/02/13 -2- xxxxx.' 251 -6 groundwater production above the BPP during the Project Term shall be produced solely from Well 32 in order to receive partial exemption set forth in Paragraph 2.5 below. 1.2. In order to obtain the partial exemption set forth in Paragraph 2.5 below, the City shall blend all groundwater produced from Well 32 with groundwater produced from Well 36 and 39 in such proportions that the blended groundwater does not exceed the primary drinking water standard for nitrate established by USEPA and CDPH, and the City shall deliver the blended groundwater to its customers or to City facilities for potable beneficial uses. 1.3. The City shall be responsible for all costs incurred in the operation and maintenance of Well 32, Well 36, Well 39, and all ancillary facilities used for the blending of groundwater produced from such wells and the distribution of that blended groundwater to City customers or facilities for potable beneficial use, including but not limited to labor, materials and power. 1.4. The City shall take out and maintain in effect at all times during the term of this Agreement comprehensive general liability insurance in an amount not less than $2 million per occurrence, for bodily injury, death and property damage, naming OCWD as an additional insured under such policy. An endorsement evidencing this insurance coverage shall be furnished to OCWD prior to the City filing with OCWD a petition pursuant to Section 38.1 of the OCWD Act (as outlined in Section 5). If the City is, or becomes, partially or fully self - insured for its public liabilities, a letter executed by the City's Mayor or City Manager stating the City's self - insured status and acknowledging its responsibility to respond to the indemnification of OCWD as provided in Paragraph 5.5 below, may be furnished in lieu of the insurance endorsement. The City shall provide written notice to OCWD of any change in the City's insured or self - insured status during the Project Term within 30 days of the effective date of such change. SECTION 2. PROJECT TERM BASIN EQUITY ASSESSMENT AND REPLENISHMENT ASSESSMENT PAYMENTS 2.1. The City shall file water production statements and a basin equity assessment statement in strict compliance with Sections 29(a) and 31.50) of the OCWD Act, respectively, for all groundwater produced by the City during the Project Term, including all groundwater produced from Well 32, Well 36, and Well 39. 2.2. On or before the 15th day of each month, during the Project Term, the City shall file with OCWD a monthly report reflecting the quantity of groundwater produced by Well 32 through the end of the preceding calendar month, and the total quantity of groundwater produced by Well 36 and Well 39 to date (through the end of the preceding calendar month) during the Project Term (a "Monthly Project Production Report"). 2.3. Concurrently with the filing of the City's basin equity assessment report pursuant to Section 31.50) of the OCWD Act, the City shall file with OCWD a statement, verified by a written declaration under penalty of perjury, setting forth the total amount of groundwater produced from Well 32 during the Project Term (the "Project Production Statement "). City of Santa Ana Agreement ...t aoaio2n3 -3- xxxxx. 251 -7 2.4. The City shall pay the replenishment assessment and additional replenishment assessment levied and imposed pursuant to Sections 27 and 27.1 of the OCWD Act on all groundwater produced by the City during the Project Term, including all groundwater produced from Well 32, Well 36 and Well 39, in accordance with Section 29(a) of the OCWD Act. 2.5. To the extent that the City's production of groundwater during the Project Term does not exceed an amount equal to the BPP plus additional groundwater produced from Well 32, and all of the groundwater produced during the Project Term in excess of the BPP was produced from Well 32, the City shall be exempt during the Project Term from paying the basin equity assessment or any surcharge on such groundwater production above the BPP from Well 32 during the Project Term to allow the City to recoup the Project Cost, as described in the Attached Exhibit A attached hereto and by this reference incorporated herein. Notwithstanding the foregoing, the City shall pay the applicable basin equity assessment and any surcharge for the following: 2.5.1. The City shall pay the applicable basin equity assessment and surcharge on all groundwater produced by the City during the Project Term that exceeds an amount equal to the BPP plus additional groundwater produced from Well 32; and 2.5.2. The City shall pay the applicable basin equity assessment and surcharge on all groundwater produced by the City during the Project Term in excess of the BPP, if such groundwater in excess of the BPP is produced from any water production facility other than Well 32. SECTION 3. CITY GROUNDWATER PRODUCTION DURING THE PROJECT REMAINDER TERM 3.1. Following completion of the Project Term, and for ten consecutive years thereafter, (such ten -year period is hereinafter referred to as the "Project Remainder Term "), the City shall make its best efforts to continue to operate Well 32 throughout the Project Remainder Term. 3.2. Beginning the first fiscal year of the Project Remainder Term, and each fiscal year thereafter during the Project Remainder Term, the City shall pay the then - applicable replenishment assessment, additional replenishment assessment and, if applicable, the basin equity assessment and surcharge, on all groundwater produced by the City during that fiscal year, including all groundwater produced form Well 32, in strict compliance with Sections 29 and 31.5 of the OCWD Act. 3.3. Notwithstanding Paragraphs 3.1 and 3.2 above, in the event that the City was unable to produce sufficient groundwater from Well 32 during the Project Term to allow the City to achieve a total groundwater production equal to the BPP plus the additional groundwater produced from Well 32 so as to recover the Project Cost, the City and OCWD shall meet and confer to implement the program described in Exhibit A to allow the City to increase production from Well 32 for additional time to allow the City to achieve the total amount of Well 32 groundwater production that had been intended for the Project Term and thereby recover the City of Santa Ana Agreement xxxx A a06/02/13 -4- xxxxxA 251 -8 entirety of the Project Cost (the "Make -Up Production "). In the event that the City undertakes Make -Up Production: 3.3.1. The City shall receive a partial basin equity assessment exemption on the Make -Up Production in accordance with Exhibit A. 3.3.2. The City shall file Monthly Project Production Reports (as described in Paragraph 2.2) for the Make -Up Production during each calendar month during the Make -Up Production time. 3.3.3. In addition to all groundwater production reports and statements required under the OCWD Act, the City shall file a Project Production Statement (as described in Paragraph 2.3) for the Make -Up Production concurrently with the filing of the City's basin equity assessment report pursuant to Section 31.50) of the OCWD Act. SECTION 4. MISCELLANEOUS 4.1. Term. This Agreement shall become effective upon the Board of Directors of OCWD approving a partial exemption of the BEA for the water produced from Well 32, and shall continue for a term of twenty years, until June 30, 2033. 4.2. Notices. Any notice, instrument, payment or document required to be given or delivered under this Agreement shall be given or delivered by personal delivery or by depositing the same in a United States Mail depository, first class postage prepaid, and addressed as follows: If to OCWD: Orange County Water District 18700 Ward Street Fountain Valley, CA 92708 Attn: General Manager If to Citv: City of Santa Ana 20 Civic Center Plaza Santa Ana, CA 92701 Attn: City Manager or such other address as either party may direct in writing to the other. Service of any instrument or document given by mail shall be deemed complete upon receipt if delivered personally, or 48 hours after deposit of such instrument or document in a United States mail depository, first class postage prepaid, and addressed as set forth above. 4.3. Compliance with Laws. The City shall keep itself informed of all existing and future state and federal laws and all county, municipal ordinances and regulations, which in any manner effect its performance of this Agreement. The City shall at all times observe and comply with all such laws, ordinances and regulations. 4.4. Records and Review. The City shall keep and maintain all records, accounts and reports relating to this Agreement and its performance hereunder for a period of three years following the expiration of this Agreement. OCWD shall have access to such records at any City of 8atrta Ana Agreement xx ..1.08/02/13 -5- xxxxx.l 251-9 time during normal business hours upon 48 hours notice to the City. At its cost, OCWD shall have the right to audit the books, records and accounts of the City relating to its performance of this Agreement no more than once annually, and the City shall provide reasonable cooperation to OCWD in this regard. 4.5. Indemnification. The City shall defend, indemnify and hold OCWD, its officers, directors, employees and representatives, harmless from and against any and all actions, suits, claims, demands, judgments, attorney's fees, costs, damages to person or property, losses, penalties, obligations, expenses or liabilities (collectively, "Costs ") that may be asserted or claimed by any person or entity arising out of the performance or implementation of this Agreement by City or its officers, directors, employees or representatives, or the distribution or use of any water produced from Well 32 or Well No. 36 or Well No. 39. The City shall also defend, indemnify and hold OCWD, its officers, directors, employees and representatives harmless from and against any and all Costs that may be asserted or claimed by any person in any administrative or judicial challenge to the legality or validity of this Agreement or any exemption under Section 38.1 from payment of the BEA on any portion of the water produced from Well 32, or to any act or determination (including any finding under Section 38.1 of the OCWD Act or the California Environmental Quality Act) leading up to or in connection with such a BEA exemption or this Agreement. 4.6. Successors and Assigns. All of the terms, conditions and provisions of this Agreement shall inure to the benefit of, and be binding upon, OCWD, the City, and their respective successors and assigns. 4.7. No Implied Waivers. In the event that any term, condition or provision of this Agreement should be breached by either party and thereafter waived by the other party, such waiver shall be limited to the specific breach so waived, and shall not be deemed either to be a continual waiver or to waive any other breach under this Agreement. 4.8. No Representation or Warranty. OCWD and the City each acknowledges that neither party, nor any of its respective officers, employees, agents or representatives, has made any written or oral representation, promise or warranty, express or implied, regarding any matter that is the subject of this Agreement, other than as expressly set forth herein. 4.9. No Obligation to Third Parties. The approval, execution and performance of this Agreement shall not be deemed to confer any rights upon any person or entity other than OCWD and the City. There are no third party beneficiaries to this Agreement. 4.10. Nature of Relationship. This Agreement shall not create, and shall not be construed or deemed to create, any agency, partnership, joint venture, landlord- tenant or other relationship between OCWD and the City. 4.11. Integration, Construction and Amendment. This Agreement represents the entire understanding of OCWD and the City as to those matters contained herein. No prior oral or written understanding shall be of any force or effect with respect to those matters covered by this Agreement. This Agreement shall be construed as if drafted by both OCWD and the City. This City of Sam Ave Agreement xxxx A a08/UM "6" xxxxx.i 251 -10 Agreement may not be modified, altered or amended except in writing signed by authorized representatives of both OCWD and the City. SECTION 5. AGREEMENT NOT EFFECTIVE UNTIL PARTIAL BEA EXEMPTION GRANTED ON WELL 32 WATER PRODUCTION 5.1. This Agreement shall not take effect unless and until all of the following actions occur in accordance with Section 38.1 of the OCWD Act: 5.1.1. City shall have filed with OCWD a petition pursuant to Section 38.1 of the OCWD Act, for a partial exemption of the basin equity assessment levied under Section 31.5 of the OCWD Act, for all groundwater above the BPP produced from Well 32 and blended with water from Wells 36 and 29 during the period from July 1, 2014 through June 30, 2019 (the "Project BEA Exemption "); and 5.1.2. The OCWD Board of Directors shall have received an investigation report on the petitioned Project BEA Exemption from OCWD's district geologist; and 5.1.3. The OCWD Board shall have conducted a public hearing on the petition for the Project BEA Exemption, made findings and determinations in accordance with Section 38.1(d)(2) of the OCWD Act, and granted the City's petition for the Project BEA Exemption. 5.2. City understands and acknowledges that the OCWD Board of Directors retains full discretion within the parameters set forth in the OCWD Act to approve or not to approve the Project BEA Exemption. Nothing in this Agreement shall in any way commit the OCWD Board of- Directors to approve the Project BEA Exemption, to take any other action with respect to the City's petition for the Project BEA Exemption, or to in any way limit or restrict the discretion of the Board of Directors of OCWD with respect to an exemption from the payment of the BEA on water produced from Well 32. IN WITNESS WHEREOF the parties have executed this Agreement as of the date first written above. APPROVED AS TO FORM: RUTAN & TUCKER, LLP C Joel D. Kuperberg General Counsel, OCWD City of Santa Ana Agreement xx ..1 a08/02/13 xxxxxl ORANGE COUNTY WATER DISTRICT By: Shawn Dewane, President Michael R. Markus, General Manager _7_ 251 -11 APPROVED AS TO FORM: By:,, -. € Jose'Sandoval Chief Assistant City Attorney t. CITY OF SANTA ANA By: Mayor Attest: 6 Clerk of the Council RECOMMENDED FOR APPROVAL: FRED MOUSAVIPOUR Executive Director Public Works Agency City of Smtln Ann Agreement xxxxxx.I 08 /02113 xxxxx.1 251 -12 Exhibit A 1. Applicable Facts • Santa Ana's preliminary cost estimate to modify Well #32 = $4,600,000. • Total Project cost and water savings to be provided to Santa Ana = $716,000 • The savings will be achieved by receiving between $269/af and $383/af of BEA reduction of approx. 4,000 of of Well #32 pumping above the Basin Production Percentage (BPP) for each year. • Santa Ana's Basin Equity Assessment (BEA) in FY13 -14 = $586/af and was established by Resolution of the OCWD Board following a public hearing held on April 17, 2013. 2. Project Limits • All additional groundwater production from Well #32 above the BPP will receive a BEA reduction. This production is expected to occur in FY15 -16 and last for approximately 4 years. • After the $4,600,000 of savings is achieved, the BEA reduction provided by OCWD will be terminated. City of SaM Ana Agmement xxxxxx.I a08102/13 -9- XXXXX,1 251-13 N C O U f6 C) c O Q E N X W w m N M >a) c6 C Q t� vJ a) Q. m U) E m m 0 ° o0 00 N � V 251 -14 m J J 3 N c 0 m U Q L u a N N m met n w-zr v 76 vma �D v� m a w w M N w m 01 O � � a O N N a a @ 01 LO co s > O N O O f0 C O tp n � O n n 01 O O Q c 0� M *' c +• 'o c o v.•Q p oa Q � o� 0. 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E a E . cL c o o o .2 u ° r m m vi n ;� E Ln vYi y o � E a o c Q E x w $ W c m 3 N s w Co v> O. « a w 0 N N �+ E; a V1 U m U O o N U N f0 E U v U Q 3 v H R N E 2 E N O p O Q 0 r r E a E O m C Q V w Q w 10- 251 -14 m J J 3 N c 0 m U Q Well No. 32 Nitrate Mitigation and Rehabilitation Study for the: City of Santa Ana FEBRUARY 2013 Prepared by: 17885 Von Karman, Suite 500 Irvine, CA 92614 (949) 809 -5000 Exhibit 2 251 -15 CITY OF SANTA ANA Well No, 32 Nitrate Mitigation and Rehabilitation Study TABLE OF CONTENTS I %willirlIlCN9LY001�"I\ta•1 Page 1.0 Introduction ................................................................................................ ............................... 1 1.1 Scope of Work ............................................................................... ............................... 1 2.0 Well Information ........................................................................................ ............................... 3 2.1 Well Description ............................................................................ ............................... 3 2.2 Water Quality Data ........................................................................ ............................... 3 2.3 Water Quality Objectives .............................................................. ............................... 4 3.0 Project Alternatives .................................................................................... ............................... 5 3.1 No Action ...................................................................................... ............................... 5 3.2 Blending in the Distribution System .............................................. ............................... 5 3.3 Treatment Options ......................................................................... ............................... 12 3.4 Preliminary Cost Estimates ............................................................ ............................... 14 4.0 Well Modifications ....................................................................................... .............................15 4.1 Well Head and Piping Modifications ............................................ ............................... 15 4.2 Building Modif ications .................................................................. ............................... 15 4.3 Motor Control Center Replacement ............................................... ............................... 16 5.0 Project Recommendation ............................................................................ ............................... 16 LIST OF APPENDICES APPENDIX A — Water Quality Data APPENDIX B — Equipment Data Sheets APPENDIX C — Estimates of Probable Construction Costs P,\P00599\0086T , inee6ny\05\ Well- 32 -Nlt rate- Miti6etian\DmR Repori\0'!texedou -I- TETRA TECH 251 -16 CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study LIST OF ABBREVIATIONS AF acre -foot AFY acre -foot per year bgs below ground surface CDPH California Department of Public Health cu ft cubic feet EA each EC electrical conductivity ft feet ft2 square feet gal gallons gpd gallons per day gpm gallons per minute hp horsepower hrs hours kw kilowatt lbs pounds LS lump sum mg/L milligrams per liter MCC Motor Control Center MCL Maximum Contaminant Level NA not available ND not detected NTU Nephelometric Turbidity Units PLC Programmable Logic Controller PRS Pressure Reducing Station psi pounds per square inch sq ft square feet TDH Total Dynamic Head TDS Total Dissolved Solids µg /l micrograms per liter µmhos /cm micro mhos per centimeter VFD Variable Frequency Drive YR year e: Toa s97moaaTi,,inea,,tos_ Wei -3zNiva1 Miegado„Dmft RVont0225I_11 TETRA TECH CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study LIST OF TABLES Table 2 -1 Well No. 32 Water Quality Data Table 3 -1 Well Nitrate Levels Table 3 -2 Gartbe Reservoir - Worst Case Scenario Pumping Combinations LIST OF FIGURES Figure I Alignment Alternatives Figure 2 Preliminary Layout of Well No. 32 Nitrate Treatment Facilities P1P005970086AF11ueed,,1W5\ - iii - TETRA TECH 251 -18 CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study INTRODUCTION The City of Santa Ana pumps water from the groundwater basin from Well Nos, 16, 18, 20, 21, 24, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40 and 41. Import water is also obtained from several Metropolitan Water District (MWD) connections. Some of the City's wells produce groundwater with elevated nitrate levels, including Well No. 32. The City has developed a Nitrate Blending Plan and mixes the high nitrate ground water with the low nitrate groundwater at the reservoir. Per the Nitrate Blending Plan the City reports the results of weekly and quarterly monitoring to the Department of Public Health comparing the nitrate level from each of the wells as well as the nitrate level leaving the City's Walnut and Garthe reservoirs. Well No. 32 has been inactive for the past five to six years due to low operating efficiencies and high nitrate levels. The purpose of the project is to review the nitrate levels that are present at Well No. 32 and evaluate alternatives for either treatment or blending of the water into the City's distribution system. The space requirements and site constraints are also considerations. An estimate of probable construction and operation costs will be prepared for the project alternatives in order to determine the best value project for the City. The recommended project will also include the goals of minimizing chemical usage and/or waste discharge and selecting processes that are easy to operate and maintain for the City staff. The following alternatives are considered in the study: 1) no action, 2) blending in the distribution system at the following locations: Garthe Reservoir, Memory Lane Pressure Reducing Facility (blending Well No. 32 water into the well water from the City's easterly sources), or 3) utilizing treatment technologies to reduce the nitrate levels located either on -site at Morrison Park or at Garthe Reservoir. In addition to the nitrate mitigation, the study also includes the following: cost estimate for rehabilitation of the well, conceptual plan and cost for removing the existing vault and constructing a building over the well to improve access and replacing the existing MCC cabinet (that has been previously flooded). 1.1 Scope of Work The project scope of work includes the following key tasks 1. Review of the City's Nitrate Blending Plan, available water quality data from the City for Well No. 32, Memory Lane Pressure Reducing Facility and Garthe Reservoir as well as the reports submitted to the Department of Public Health. 2. Review of the construction as- builts for Well No. 32, the Memory Lane Pressure Reducing Facility and Garthe Reservoir, as well as, the latest street improvement, water and/or sewer plans for Bristol Street, Westwood Avenue and Memory Lane (to determine if there is an available utility corridor for a new pipeline). 3. Review of the Well Report of the completion of the well and history of the groundwater soundings taken by the City for Well No. 32. P.T0059T0086V gin etingA05\ Well -32- Nitrate- Mi[igatlonU raft ReportV02teztdo251 —1 � TETRA TECH CITY OF SANTA ANA Well No, 32 Mtrate Mitigation and Rehabilitatlon Study A. Nitrate Mitigation Evaluation: We are assuming the following alternatives will be evaluated: No action Blending in the distribution system at the following locations: — Garthe Reservoir — Memory Lane Pressure Reducing Facility (blending Well No. 32 water into the well water from the City's easterly sources) Treatment technologies to reduce the nitrate levels located either on -site at Morrison Park or at Garthe Reservoir. 5. Budgetary costs for each of the alternatives shall be prepared. 6. Since the well has been out of service for the last five to six years, the City desires to include an estimated cost to rehabilitate the well. 7. Pump Design: Tetra Tech will perform an evaluation of the hydraulics and review the existing well pump design and provide a recommendation for the pump design and motor horsepower. Tetra Tech will prepare an engineer's estimate of probable constriction costs for the new well pump and motor. 8. Building Modification: Tetra Tech will review the existing underground vault design and then provide a recommendation for modifying the current structure and adding an aboveground building with a stairwell down to the well pump. We are assuming that the new building will be a concrete block building with a gabled roof, similar to other City facilities. 9. MCC Replacement: The existing MCC was previously flooded. The new MCC and PLC panels will be located within the proposed building. Tetra Tech will perform a site visit to review the existing panels and instrumentation at the site. RW0597\0086Tngiueering \05\ Welld2-Nitrate- Mitigation \DraRReport\021extdoce 2 - TETRA TECH 251 -20 CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study 2. WELL INFORMATION 2.1 Well Description Well No. 32 is located near the entrance to Morrison Park, approximately 45 feet east of Westwood and 200 feet south of Corrigan Street, as depicted in Figure 1. The well was drilled in 1984 to a depth of approximately 1,060 feet below ground surface (bgs). The total length of screened interval is 290 feet. The static water level is at 116 feet and the pumped level is at 228 feet below ground. The reported well yield is approximately 2,127 gpm as measured in 2001. The well is equipped with a vertical turbine pump rated for a capacity of 2,700 gpm with a 300 hp motor. The manufacturer and model number of the pump is Vertiline, V85- 70529. Well No. 32 operated for a period of time and has been out of service since 2004. Well No. 32 Location Map 2.2 Water Quality Data Based on a review of the City's historical water quality data (from 2002 through 2004) for Well No. 32, the nitrate levels varied from about 15 mg/L to 37 mg /L, with an average of 23 mg /L. On November 1, 2012, the City performed a 12 hour water quality sampling test to measure the nitrate levels in the well water as a function of pumping time. Samples were collected for the following time periods: 5, 10, 15, 30 minutes, and then 1, 2, 3, 6, 9 and 12 hour points. While it was expected for the nitrate levels to decrease over time, the test results indicated that the nitrate level remained relatively consistent at about 43 mg/L for the duration of the test. P:N00597\006 T,in¢¢ting\t15\ Welld2- Nllm[e- M1Ngn[lon\Dre9 Repotl \021axtdoq� I _ � TETRA TECH CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study The City also performed a Title 22 analysis on the water quality sample on November 1, 2012. The results of the water quality testing are presented in Appendix B. A summary of the primary constituents is presented in Table 2 -1. Table 2 -1. Well No. 32 Water Quality Data (l) PhysicaZParameters _ Specific Conductance unhos /em 1,130 Turbidity NTU _ H Units 7.8 _ _ Temperature _ de _Celsius 20.6 General Minerals _ Total Dissolved Solids m /L__678 <0.5 Total Or anic Carbon_ m /L 0.29 Total Hardness (as CaCO3 ___ mg /L 432 Total Alkalinity (as CaCO3 ) mg /L 240 Potassium tng_/L 3.5 Sodium m /L 52.3 Ma nesium mg/L 23.9 Calcium m L 134 Bicarbonate m /L 240 _ Sulfate m L 132 _ _ Nitrate as N m L _ 9.21 Chloride mg /L 115 eo Sample collected November 1, 2012 2.3 Water Quality Objectives Metals Aluminum 1.3 A senic __ <1 Barium /1 161 _ Be yllium µ <0.5 Cadmium Chromium Totals /1 <I -- Copper .,._ /l 2.5 Iron 1 _ 60.6 Lead 1 Q _ Manganese _49/i 2.1 _Mercury _ .} g 1 <0.1 Nickel 2.5 Perchlorate _fig 4 Selenium _ggA 1 1.9 Silver _ _Jtg/t _ <1 Thallium t <0.5 Vanadium L <1 Zinc L 5.9 The primary water quality goal of this project is to reduce the levels of nitrates in Well No. 32 to levels that are less than half of the MCL. The MCL for nitrate is 45 mg /L as NO3 and the goal would be to provide treatment to approximately 20 mg/L. The reduction in the nitrate level could be accomplished by treatment or various blending alternatives. PdP00599\0086Tr,,ircerine \05 \_ Well -32- Nitrate- MlligallonOmftReport \02text.doex -4- TETRA TECH 251 -22 CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study 3. PROJECT ALTERNATIVES The alternatives consist of a variety of several options that include the following: 1. No action 2. Blending in the distribution system at the following locations: • Garthe Reservoir • Memory Lane Pressure Reducing Facility (blending Well No. 32 water into the well water from the City's easterly sources) 3. Utilizing treatment technologies to reduce the nitrate levels located either on -site at Morrison Park or at Garthe Reservoir 3.1 No Action A no action scenario would result in the City operating Well No. 32 as it had in the past. The well would be started and pumped to waste until the nitrate level dropped to acceptable levels before allowing the groundwater to enter the distribution system. The pump to waste time varied based on the concentration of nitrate detected. The City has reported that the pumping time varied as much as 6 to 18 hours. The City would then be discharging anywhere between 900,000 to 2,700,000 gallons of groundwater to waste. Well No. 32 waste flows are piped from the well and discharged to Santiago Creek, located adjacent to Garthe Reservoir. The City must coordinate with Riverview Golf Course located downstream as the City discharges into Serrano Creek which merges downstream with the Santa Ana River. Riverview Golf Course lies within the Santa Ana River and course operations are impacted due to the well discharge. Therefore, the City's operation of Well No. 32 would remain constrained both by the nitrate level in the groundwater and the impacts to the golf course. 3.2 Blending in the Distribution System High - nitrate groundwater is largely managed by blending the groundwater with water from other sources that has lower nitrate concentrations. This approach is common for drinking water treatment in larger municipalities and obviously requires a second, low- nitrate water source. 3.2.1 Blending in Garthe Reservoir The City prepared a nitrate blending and monitoring plan in 2010 for both Garthe and Walnut Reservoirs. One of the potential alternatives is to blend water from Well No. 32 into Garthe Reservoir. The blending plan was reviewed to determine whether it would be feasible to blend Well No. 32 water into the reservoir. Garthe Reservoir site consists of three reservoirs with a total of 16 million gallon storage capacity, Wells 18, 24, 36, and 39 and six booster pumps. The City provides an ongoing nitrate blending treatment process in which high nitrate water from Well No. 18 and Well No. 24 are blended with low nitrate water from Well Nos. 36 and 39. The wells are staged in the SCADA system to utilize the low nitrate wells first (i.e., Well Nos. 36 and 39) followed by the high nitrate wells. The staging of the wells is based on the reservoir level. The control logic in the station's Remote Terminal Unit is programmed to prevent Well 18 and Well 24 from coming on alone (i.e., Well Nos. 36 or 39 have to be running first). Table 3 -1 P:V' 00597 \008ylrngineoing\OS\_We11J2- Nitrate - Mitigation \Dian Report \02text dot 51 .13 3 TETRA TECH CITY OF SANTA ANA Well No. 22 Nitrate Mitigation and Re h a b l i la ti 0-n Study presents the average nitrate levels and flow rates for the wells. Well No. 32 data was based on historical records and the desire of the City to pump at 2,500 gpm. Table 3 -1. Well Nitrate Levels Table 3 -2 presents the worst case scenario of pumping various combinations of wells into Garthe Reservoir and the anticipated nitrate levels. The predicted nitrate levels were calculated from the mass balance of well flow rates and nitrate levels in accordance with the City's 2010 nitrate blending plan. Flow from Well No. 32 was then added to each of the pumping scenarios to determine the impact on the reservoir nitrate level. As indicated below, the addition of Well No. 32 to each of the blending scenarios would increase the total combined nitrate levels in Garthe Reservoir anywhere from 1.6 mg/L to 4.8 mg/L. Although the combined nitrate levels in the reservoir would increase, they would still meet the City's goal of achieving less than half the MCL. The 2010 blending plan indicates that the actual 3 -year average nitrate level was about 11 mg/L, which was less than most of the operating scenarios in the blending plan. If Well No. 32 flows were to be included, it would probably increase the actual level anywhere from 2 to 5 mg/L. Table 3 -2. Garthe Reservoir - Worst Case Scenario Pumping Combinations In order to convey the flows to Garthe Reservoir, approximately 3,250 feet of new pipeline would need to be constructed as shown on Figure 1. From Well No. 32 the new pipeline would head southerly in Westwood Avenue then west in Memory Lane and then turn south on Bristol Street terminating at Garthe Reservoir. Summarized below are design issues that would need to be addressed in regards to this alignment selection: PAP00599 \0086\Hngm ,1ng \05\ We11-32- Nitrate- Mitlgatlon\Deaft Report\02textdoax - 6 - TETRA TECH 251 -24 CITY OF SANTA ANA Well No. 32 Nitrate M i t I g a ti on and Rehabilitation Study Bristol Street: • Six lanes (three lanes in each direction, with a raised median in some portions) with heavy traffic with a combination of commuter, local resident, and school traffic Phased construction across the signalized intersection at Bristol Street and Memory Lane • Santiago Creek crossing — there is a bridge there the pipe will either need to be bored and jacked under the creek or hung from the bridge • Bristol is congested with existing utilities: — Sewer — Water — Underground dry utilities (gas, electric, telephone, cable) — Storm Drain • Provisions for maintaining access to a church on west side of street need to be provided • No residences fronting street • Commercial area at the intersection of Bristol and Memory Lane Memory Lane: Four lanes (two lanes in each direction) Existing utilities consist of: — Existing sewer and water within the street — Overhead utilities • Residential area but no residences front street Westwood Avenue: • Two travel lanes, one in each direction • Overhead utilities • Provisions for maintaining access to a church and a public park need to be provided The size of the pipeline is dependent on how the Garthe reservoirs are used for blending. There are two options. The first is to send flows during start-up to Garthe Reservoir until the half the MCL goal is achieved and then divert the flow back into the distribution system. The second is to send all flows to Garthe Reservoir and then use the pump station at Garthe Reservoir to pump back into the system. The City has stated that the area of the distribution system Well No. 32 discharges into historically experiences low service pressures when the well is not operating. Operating the well into the system improves the service pressure delivered to the City's customers. The City would prefer to keep the well connected to the distribution system within Westwood Avenue. However, Well No. 18, located at the Garthe Reservoir site is in decline. Well No. 18 was drilled in 1956 and production has lessened over time with the City estimating that the well probably only has about 10 years of useful life remaining. Upon the loss of Well No. 18, the City could replace the ground water flows that went into Garthe Reservoir with the ground water pumped from Well No. 32. Summarized below are the design issues that will need to be considered for each alternative: Alternative 1— Utilize Garthe for Blending Only There is a hydraulic grade difference of 140 feet between the distribution system (272 feet) and the Garthe Reservoir high water level (132 feet). This impacts the operation of the well pump. 2. Well pump horsepower of 300 hp with a design flow rate of 2,500 gpm. PMOOS9T00WEngineering \OS_ _Well -32- Nitrate- MitigationOmfl Report \02text`25 1 _275 TETRA TECH CITY OF SANTA ANA Well No. 32 Nitrate Miliaation and Rehabilitation Study 3. Pressure surges will be created as the ground water discharge is diverted from Garthe Reservoir to the distribution system. In order to mitigate pressure surges the following will need to be considered: Surge pressure anticipator valve to discharge to the waste to discharge pipeline A surge tank if the pressure fluctuations are so severe a surge anticipator valve does not satisfactorily mitigate the fluctuations Type of valves used for transitions valve — A valve made to throttle such as a ball or plug type valve — Motor operated valve electric actuator with valve opening and closing speed control 4. The line to Garthe needs provisions to keep it full at all times. • Goose neck at the Garthe reservoir site A pressure reducing /sustaining valve located at the Garthe reservoir site (if back pressure is also required to keep the pump operating on its curve) 5. A variable frequency drive should be considered for control of the well, maintain a constant discharge pressure of 65 psi. This will allow the pump to discharge between 800 gpm and 2,700 gpm before locking on a speed curve. This may allow the City to operate the well for longer durations instead of shutting off at high discharge pressure due to low system demands as would happen with a constant speed pump. 6. Pipe sizing based on: Maintaining a velocity of approximately 5 feet per second, which is an industry standard and recommended for pumping practice. This results in a 16 -inch diameter pipe Utilizing the pipe itself to increase headless so that a pressure sustaining valve is not required but at the same time the pump stays on its pumping curve. A 12 -inch pipe would result in an increase of headless and keep the pump on the pump curve. The resulting velocity in the 12 -inch pipe is approximately 9 feet per second. This is velocity is high compared to the 5 feet per second that typically governs this type of application. However, it is considered reasonable as the use at this velocity is infrequent and temporary (only during well start-up) 7. A provision for routine flushing schedule of the fill line to the Garthe reservoir site will be required to mitigate the potential of the stagnant water losing its chlorine residual and causing a water quality issue. Alternative 2 — Fill Garthe Reservoir 1. Well pump horsepower of 150 hp with a design flow rate of 2,500 gpm. 2. The line to Garthe needs provisions to keep it full at all times. Recommend using a gooseneck similar to what is constructed at the Garthe site to keep the other well fill line full. 3. Results in the ground water being pumped twice; once to storage and then a second to the system. 4. Surge provisions will not be required as the ground water will be pumped directly to storage. 5. Pipe sizing based on maintaining a velocity of approximately 5 feet per second which is an industry standard and recommended for pumping practice. This results in a 16 -inch diameter pipe. 6. Specific pump control is not required (i.e. a variable frequency drive is not required). P.N00599\00W]Egmna,i,\05N_ We11- 32- Nit,mt Mitj,fl Omit R,.M021w done -8- TETRA TECH 251 -26 CITY OF SANTA ANA Well No. 32 Nitrate Mitl9ation and Rehabilitation Study 3.2.2 Blending in Memory Lane Pressure Reducing Facility A second alternative is to blend water at the Memory Lane Pressure Reducing Facility. The ground water pumped by Well No. 32 would be mixed with ground water with lower nitrate levels from the City's easterly wells. The pressure reducing station currently takes water from the City's higher easterly zone and breaks pressure to serve the lower zone west of the 5 Freeway. The City reports that the ground water from the higher zone has a nitrate level of approximately 10 mg/L. In order to maintain a pumping rate of 2,500 gpm from Well No. 32 a flow rate of 6,100 gpm is required in order to achieve half of the MCL. This results in a net flow rate of 8,600 gpm. The existing pipe size is 16- inches in diameter. This flow rate results in a velocity of 13.7 feet per second; higher than what is typically designed for in the industry. A velocity such as this results in increased pumping costs due to higher head loss in the system and can also begin to cause damage to traditional cement and mortar lining systems. In addition, it is also unknown if the City's system has the capacity to send 6,100 gpm from the higher zone to the lower zone. In lieu of pumping 2,500 gpm from Well No. 32, a lower pumping rate may be selected. Using a velocity of 5 feet per second within the existing 16 -inch pipeline, the required flow rate blending ratio between Well No. 32 and the Memory Lane Pressure Reducing Facility is 1,400 gpm and 3,600 gpm respectively to achieve a nitrate level of half of the MCL. This results in the production out of Well No. 32 being reduced by over 40% when blending is required. There is also a concern regarding mixing time at this location. The nearest customer to be served by this blended water is located approximately 100 feet from the pressure reducing facility. Without the benefit of a water model of the City's system, it is recommended that the blending of the waters be agitated through the use of a static mixer installed as part of the piping in order to blend the water. The efficacy of this will need to be further studied. In order to convey the flows to the Memory Lane Pressure Reducing Facility approximately 3,100 feet of new 16 -inch diameter pipeline would need to be constructed as shown on Figure 1. From Well No. 32 the new pipeline would head southerly in Westwood Avenue then east in Memory Lane to the end of Memory Lane alley terminating at the Pressure Reducing Facility. Summarized below are design issues that would need to be addressed in regards to this alignment selection: Memory Lane Alley: Approximately 30 -feet wide Residential area with garage access for many houses. All houses are fronting other streets • Trash collection performed in the alley Existing utilities — 16 -inch water — 30 -inch sewer — Overhead utilities Memory Lane: • Four lanes (two lanes in each direction, transitions to one lane east bound and two lanes west bound at Lowell. Traffic is mostly residential traffic. Raised median with mature trees east of Westwood • Existing utilities — sewer — water — overhead utilities FT0059A0086\9.& in n.,\05 \_We11-32-Nilw, Min,ationT.fl Re,odV)21ax15 1 _2� TETRA TECH CITY OF SANTA ANA Well No, 32 Nitrate Mitigation and Rehabilitation Study • Residential area but no residences front street • Decorative brick cross -walks at Westwood intersection • Concrete intersection at Flower Intersection Westwood: Two travel lanes, one in each direction • Overhead utilities Provisions for maintaining access to a church and a public park need to be provided Summarized below are the design issues that will need to be considered for utilizing the Memory Lane Pressure Reducing Facility as a blending site: 1. The pressure reducing facility will need to be reconstructed. The facility will need flow control capability in order to deliver the water required to blend the water. The flow at the Pressure Reducing Facility should be a set flow rate. 2. Well pump horsepower of 150 hp with a design flow rate of 1,400 gpm assuming 3,600 gpm of blending water is available from the higher zone. 3. Pressure surges will be created as the ground water discharge is diverted from waste to discharge to the distribution system. In order to mitigate pressure surges the following will need to be considered: Type of valve used for transitions valve: — A valve made to throttle such as a ball or plug type valve — Motor operated valve electric actuator with valve opening and closing speed control slow enough to minimize pressure spikes • A surge tank if the pressure fluctuations are so severe that throttling valves do not satisfactorily mitigate the fluctuations 4. The well pump will also need a flow meter and a variable frequency drive to control flow. The well pump will need to be able to vary should the pressure of the upper zone begin to decline and the pressure sustaining feature of the pressure reducing valves begin to engage to prevent lowering of the pressure in the upper zone. 5. Provide an in -line static mixer to agitate and mix the two water sources. 6. This option from a control standpoint is more complex as the following parameters have to be met: • Half the MCL for nitrate entering the system • Flow control of Well No. 32 and the PRS • Monitoring of nitrates after the static mixer, if half the MCL is not met, then the well will need to be shut down while the pressure reducing station remains live. The pressure reducing station will then have to operate as normal based on meeting demands rather than a flow control station The City will need to confirm that flow can be restricted at the flow control facility to ensure mixing and still meet system demands P:\P00599\0086\E nxering \05\ Well -32 -Nit rate- MitigationOmfl ReVoit \02teztdocx - lo- TETRA TECH 251 -28 Y s a c z: n o' 3AV c m �I z � - F 7:��9 T!p It 251 -29 a e 1 w a W CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study 3.3 Treatment Options Ion exchange (IX) is the most widely used treatment technology for reducing nitrate concentrations at well sites or other points of entry into potable water distribution systems. IX technologies are relatively simple to design, operate and monitor. IX is most suitable for waters with total dissolved solids (TDS) concentrations of less than 500 mg/L. Salts and organics in water will eventually foul IX resins, but many systems operate for 5 to 10 years without requiring resin replacement. The primary disadvantage of these systems is the production and costly disposal of concentrated brines, which can contain high concentrations of sodium chloride, nitrate, sulfate, and arsenate. Brines can be disposed of in sewers where adequate dilution is available, but long -term salinity control in some areas may limit this option. Two options are available for regenerating IX resins and include on -site and off -site regeneration. On -site regeneration requires an aboveground brine storage /brine maker tanks, water softener for brine make -up, brine/backwash discharge pump, air blower system for air block during media regeneration, and backwash conveyance system. Off -site regeneration involves contracting with a company that would slurry out a specific amount of ion exchange resin at a time and transport the resin to a facility to regenerate the resin. At the same time, an equal quantity of regenerated resin would be slurried back into the vessels ready for use. The City indicated that disposal of waste brine to the sewer is not a viable option. In addition, there is a lack of sufficient space at Morrison Park to accommodate the additional regeneration facilities. As a result, the off -site regeneration option was considered as part of the treatment system. Tetra Tech contacted several equipment suppliers to provide equipment sizing for the IX vessels. Based on an assumed nitrate influent concentration of 45 mg /L, a treated water level of 20 mg/L and a well flowrate of 2,500 gpm, approximately 70% (1,786 gpm) of the flow from Well No. 32 would need to be treated by IX. The remaining 714 gpm would be bypassed and blended with the treated water to meet the water quality goal. For off-site regeneration, 12 IX vessels (12 feet diameter each) would be required and would be operated as two trains of six vessels each. There would be approximately 3,600 cubic feet of nitrate resin installed, and 1,200 cubic feet of resin in float. The contract maintenance supplier would slurry out 1,200 cubic feet of resin at a time and transport the resin back to their facility to regenerate the resin. At the same time, 1,200 cubic feet of regenerated resin would be slurried back into the vessels ready for use. A preliminary footprint of the wellhead treatment facilities was prepared and is presented in Figure 2. As indicated, approximately 0.3 acres would be required for the treatment facilities that would include the IX vessels, electrical and control panels and other appurtenances. Based on this layout, there is insufficient room to locate any treatment facilities at Garthe Reservoir. If the treatment facilities are located at Morrison Park, that would require using a portion of the parking lot or the entire tennis court area. It should be noted that this analysis is based on the assumption that Well No. 32 will produce a constant raw water nitrate level of greater than 40 mg /L. However, based on historical records, it is anticipated that the nitrate level will decrease to the 20 - 25 mg/L range. P:T 0059T0086T ngineeft\ 05LWe11- 32- Nltm[e- Mifi1xiov[Dmft Rg0tb 21e #.do2 5I �O TETRA TECH �v rm z- (JI a LL '� d � rR ,r w 2 6 i K V N C Q w U i 4 v F. v w m S `o 0 w O O 0 A U' 251 -31 e 'o E a n 9 6 � z � _ m v y m o x c R P6, M C CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study 3.4 Preliminary Cost Estimates Project cost estimates were prepared for the project alternatives which include capital costs, operation and maintenance, and unit costs. The project cost estimating was performed using the Association for the Advancement of Cost Engineering (AACE) International's cost estimating classification system, which defines five separate classes of cost estimates. For a study or feasibility level report, this is considered a Class 4 estimate, and allows for an accuracy range of -15% to -30% on the low side, and +20% to +50% on the high side. 3.4.1 Capital Costs Construction costs consist of site work, mechanical equipment, filters, pumps, chemical metering equipment, piping, valves, structural, electrical and instrumentation. Bonds and insurance have been included at 2% and contractor's overhead and profit is assumed to be 10 %. A 30% construction cost contingency is included for this planning level stage. The total capital cost includes a 20% cost allotment for preparing engineering plans, specifications, bid and construction management and inspection, technical, incidental permits, survey, geotechnical, legal, and administrative costs. The capital cost for the blending option at Garthe Reservoir (Blending Only) is estimated at $4,650,000. The capital cost for the blending option at Garthe Reservoir (Fill Reservoir) is estimated at $4,580,000. The capital cost for the blending option at Memory Lane Pressure Reducing Facility is estimated at $4,700,000. The capital cost for the nitrate treatment facilities is estimated at $11,700,000. It should be noted that the costs for the well rehabilitation as described in Section 4 have been included in the capital cost estimate for each alternative. Estimates of probable construction costs are contained in Appendix C 3.4.2 Operation and Maintenance Costs Annual Operation and Maintenance Costs (O &M) were prepared and include power, chemicals, labor, and maintenance materials for the treatment facilities. The annual O &M costs for the blending options were not developed because the City currently incurs these costs already and would not be new. A cost for off -site IX resin regeneration by a contracting service is also included in the annual costs. The annual estimated O &M cost is $8.02 million and is contained in Appendix C. P:T0059700g6\Engineering \05 \_ Wel1-32- N4ate- Miti,nti�raft RVoiIW2textdocx 14 TETRA TECH 251 -32 CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabilitation Study 4. WELL MODIFICATIONS 4.1 Well Head and Piping Modifications Well No. 32 has been inactive since 2004. The first action the City wants to perform is to rehabilitate the well and perform the following: • Chemical rehabilitation Mechanical rehabilitation Well development, testing and water quality sampling A video survey will first be performed to verify the rehabilitation techniques necessary to address the condition of the well casing. Currently, the well head for Well No. 32 is located within a buried vault. The City desires to raise the well head to meet current Department of Public Health recommendations for the construction of potable water wells. The well casing, tubes (sounding, gravel fill line, etc) and a new sanitary seal will need to be constructed to raise the well head to grade. The discharge piping will be reconstructed. Depending on the alternative selected will dictate the operational flexibility required to be designed at the well. It is anticipated the following new equipment will be required: Pump and motor • Piping Isolation valves • Check valve Motor operated throttling valves (one for discharge to blending site and one for discharge to system) Flow meter Surge protection (assuming a surge tank) • Nitrate monitoring equipment • Sodium hypochlorite disinfection system • Site improvements • Landscaping 4.2 Building Modifications One the well head is raised to finish grade, the underground vault will be demolished and a new building constructed to protect the well head and piping. The well is located at the entrance of Morrison Park. The building will match other City water facility buildings located within the City and will incorporate the following: Concrete slab -on -grade floor Concrete masonry unit walls and foundation Gabled roof Steel roof framing P:m00597a0WEnbn ring\os\ we11-32- Him. oe >nna+s.renme•eaePera02mxt.&251 1 TETRA TECH CITY OF SANTA ANA Well No. 32 Nitrate Mitigation and Rehabllilation Study Sound attenuation • Entry doors Roof hatch • Ventilation 4.3 Electrical Equipment Replacement The electrical equipment will be located within the building to protect it from vandalism and weather. The electrical equipment will include: 1. Main switchgear 2. PLC Control Plan 3. Variable Frequency Drive 4. Telemetry 5. Lighting 6, Programming 5. We recommend either Alternatives 1 or 2, blending at Garthe Reservoir. This utilizes the 16 million gallons of storage to blend the water qualities. In addition, depending on operating preferences, the City can decide to continue to use Well No. 32 to augment the pressure in the local area or fill the reservoir. This alternative appears the most practical and cost - effective to achieve the City's desired goal not to waste approximately 2.1 million gallons of water while waiting for the nitrate residual to fall to half of the MCL, maintain the desired pumping capacity of 2,500 gpm at Well No. 32 and minimize impacts to the community at large. P:tPe05990085Engineering \05\ Wen- 32- Nllnate- Mitlgationt mft Reponto2textdow 16 TETRA TECH 251 -34 APPENDIX A Water Quality Data * * * *** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Station Type: WELL CASING Perf Interval (R li 307 -1030 Aquifer: UNDEFINED State Well Number: 04S/10W -36Q01 Well Owner: SANTA ANA Well Name: Well No. 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -04 Sample ID: 12026237 Laboratory: OCWD Sample Date/Time: 11/01/201213:50 Analysis Requested: GENLVLII Sample Depth(R): Al Receive Date /Time: 11/01/201214:40 Sample Matrix: WATER Number of Bottles: 4 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: N Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program 1 Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL X200.8 RUNNING TO WASTE; WELL ON AT 060611/1 11/08/2012 Parameter Analysis Dates Results Detect Limits Abbreviation Name Method Extract Analysis Value Units Value Units Ag Silver X200.8 11/07/2012 11/08/2012 <1 ug /L 1 ug /L Al Aluminum X200.8 11/07/2012 11/08/2012 1.3 ug /L 1 ug /L ALKPHE Alkalinity - Phenolphthalein 2320B 11/01/2012 <1 mg /L 1 mg /L As Arsenic X200.8 11/07/2012 11/08/2012 <1 ug /L 1 ug /L B Boron X200.7 11/05/2012 11/07/2012 <0.1 mg /L .1 mg /L Be Barium X200.8 11/07/2012 11/08/2012 161 ug /L 1 ug /L Be Beryllium X200.8 11/07/2012 11/08/2012 <0.5 ug /L .5 ug /L Sr Bromide X1 -300.0 11/01/2012 0.28 ni .1 mg /L Ca Calcium X200.7 11/05/2012 11107/2012 134 mg /L .5 mg/L Cd Cadmium X200.8 11/07/2012 11/08/2012 <1 ug /L 1 ug /L Cl Chloride X1 -300.0 11/01/2012 115 mg /L .5 mg/L Co Cobalt X200.8 11/07/2012 11/08/2012 <1 ug /L 1 ug /L CO3Ca Carbonate (as CaCO3) 23208 11/01/2012 <1 mg /L 1 mg/L Cr Chromium X2007 11/05/2012 11106/2012 <1 ug /L 1 ug /L Cu Copper X200,8 11/07/2012 11/08/2012 2,5 ug /L 1 ug /L EC Electrical Conductivity 2510B 11/01/2012 1130 um /cm 1 um /cm Fe Iron X200.7 11/05/2012 11/06/2012 60,6 ug /L 1 ug /L Gd Gadolinium X200.8 11/07/2012 11/08/2012 <10 ng /L 10 ng /L HCO3Ca Bicarbonate (as CaCO3) 23208 11/01/2012 240 mg /L 1 mg /L Hg Mercury X200.8 11/07/2012 11/0812012 <0.1 ug /L .1 ug /L K Potassium X200.7 11/05/2012 11/0712012 3.5 mg/L .5 ni Mg Magnesium X200.7 11/05/2012 11/07/2012 23.9 mg/L .5 mg /L Mn Manganese X200.8 11/07/2012 11/08/2012 2.1 ug /L 1 ug /L No Sodium X200.7 11/05/2012 11/0712012 52.3 ri .5 mg /L Ni Nickel X200.8 11/07/2012 11/08/2012 2.5 ug /L 1 ug /L NO2 -N Nitrite Nitrogen 450ONO3F 11/01/2012 0.003 mg /L .002 mg /L NO3 -N Nitrate Nitrogen X1 -300.0 11/01/2012 9.21 mg /L .1 mg /L OHCa Hydroxide (as CaCC3) 23208 11/01/2012 <1 mg /L 1 mg /L Pb Lead X200.8 11/07/2012 11/08/2012 <1 ug /L 1 ug /L pH pH 4500H +B 11/01/2012 8. UNITS 1 UNITS PO4 -P Phosphate Phosphorus 365.1 11/01/2012 0.04 mg /L .01 mg /L (orthophosphate) Sb Antimony X200.8 11/07/2012 11/08/2012 <0.5 ug /L .5 ug /L Be Selenium X200.8 11/07/2012 11108/2012 1.9 ug /L 1 ug /L 804 Sulfate X1-300.0 11101/2012 132 ni .5 mg /L TDS Total Dissolved Solids 2540C 11101/2012 678 ni 1 mg /L Approval Group: WQ 1211012812 12:55 OCWD WRMS RPT#: 3587 Page 9 of 2 Approved: Yes r J_YC 1: * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 State Well Number: 04S/10W -36Q01 Station Type: WELL CASING Well Owner: SANTA ANA Pert Interval (R bgs): 307 -1030 Well Name: Well No. 32 Aquifer: UNDEFINED Clty: SANTA ANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -04 Sample ID: 12026237 Laboratory: OCWD Sample Date/Tlme: 11/01/201213:50 Analysis Requested: GENLVLII Sample Depth(R): Receive Date /Time: 11/01/2012 14:40 Sample Matrix: WATER Number of Bottles: 4 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: N Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL RUNNING TO WASTE; WELL ON AT 060611/1 Parameter Analysis Dates Results Detect Llmlts Abbreviation Name Method Extract Analysis Value Units Value Units TI Thallium X200.8 11/07/2012 11/0812012 <0.5 ug /L .5 ug /L TOO Total Organic Carbon (Unfiltered) 5310C 11106/2012 0.29 mg /L .05 mg /L TOTALK Total Alkalinity (as CaCO3) 2320B 11/01/2012 240 mg /L 1 mg /L TOTHRD Total Hardness (as CaCO3) X200.7 11105/2012 11/07/2012 432 mg /L 1 mg /L V Vanadium X200.8 11/07/2012 11/08/2012 <i ug /L 1 ug /L Zn Zinc X200.8 11/07/2012 11/08/2012 5.9 ug /L 1 ug /L Approval Group: WO Approved: Yes 251 -37 1211012012 12:55 OCWD WRMS RPT#: 3587 Page 2 of 2 * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Station Type: WELL CASING Pert Interval (ft bgs): 307 -1030 Aquifer: UNDEFINED State Well Number: 04S/10W -36Q01 Well Owner: SANTA ANA Well Name: Well No. 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023-05 Sample ID: 12026238 Laboratory: OCWD Sample Date/'Fime: 11/01/201213:50 Analysis Requested: CL04 Sample Depth(ft): Receive Date /Time: 11/01/201214.40 Sample Matrix: WATER Number of Bottles: 1 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: N Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL RUNNING TO WASTE; WELL ON AT 060611/1 Parameter Analysis Dates Results — o Detect Limits Abbreviation Name Method Extract Analysis Value Units Value Units CL04 Perchlorate X1 -314.0 11105/2012 4. ug /L 2.5 ug /L Approval Group: WQ 12/10/2012 12:55 OCWD WRMS RPT #: 3587 Page 1 of i Approved: Yes 251 -38 * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Statlon Type: WELL CASING Pert Interval (R bgs): 307 -1030 Aquifer: UNDEFINED State Well Number: 04S/10W -36Q01 Well Owner: SANTA ANA Well Name: Well No. 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -01 Sample ID: 12026393 Laboratory: DOWD Sample Date /Time: 11/01/201213:50 Analysis Requested: FIELD Sample Depth(R): Receive Date /Time: 11/01/2012 14:40 Sample Matrix: WATER Number of Bottles: 0 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: N Sampled By: BRIAN OKEY Field Cooled: N Monitoring Program: Unknown Water Quality Program Comments: Well has been COS since 2004, Not sampled for T -22, but for SA to explore returning the well to service. WELL RUNNING TO WASTE; WELL ON AT 0606 11/1 Parameter Analysis Dates Results Detect Limits Abbreviation Name Method Extract Analysis Value Units Value Units F -EC Field EC METER 11/0112012 1070 um /cm 1 um /cm F -pH Field pH METER 11/01/2012 7.6 UNITS 1 UNITS F -TEMP Field Temperature METER 11/01/2012 20.6 C 1 C Approval Group: WQ Approved: Yes 251 -39 1211012012 12:55 OCWD WRMS RPT #: 3587 Page 1 of 1 * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Station Type: WELL CASING Perf Interval (ft bgs): 307 -1030 Aquifer: UNDEFINED State Well Number: 04S110W -36Q01 Well Owner: SANTAANA Well Name: Well No. 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023-02 Sample ID: 12027248 Laboratory: OCWD Sample Date/Time: 11/01/201213:50 Analysis Requested: 524 Sample Depth(ft): ug /L Receive Date /Time: 11/01/201214:40 Sample Matrix: WATER Number of Bottles: 6 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: Y Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program 524.2 11/03/2012 Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL 11 DCA RUNNING TO WASTE: WELL ON AT 060611/1 524.2 11/03/2012 Abbreviation Parameter Name Analysis Method Extract Dates Analysis Value Results Units s ® Value Detect Limits Units 1112PC 1,1,1,2 - Tetrachloroethane 524.2 11/03/2012 ND ug /L .5 ug /L 111TCA 1,1,1 - Trichloroethane 524.2 11/03/2012 ND ug /L .5 ug /L 1122PC 1,1,2,2- Tetrachloroelhane 524.2 11/03/2012 ND ug /L .5 ug /L 112TCA 1, 1,2-Trich loroethane 524.2 11/03/2012 ND ug /L .5 ug /L 11 DCA 1,1- Dichloroelhane 524.2 11/03/2012 ND ug /L .5 ug /L 11 DOE 1,1- Dichlorcethene 524.2 11/03/2012 NO ug /L .5 ug /L 11 COP 1,1- Dichloropropene 524.2 11103/2012 NO ug /L .5 ug /L 123TCB 1,2,3 - Trichlorobenzene 524.2 11/03/2012 NO ug /L .5 ug /L 123TCP 1,2,3-Trichloropropane 524.2 11/03/2012 NO ug /L .5 ug/L 124TCB 1,2,4 - Trichlorobenzene 524.2 11/03/2012 NO ug /L .5 ug/L 124TMB 1,2,4 - Trimethylbenzene 524.2 11/03/2012 NO ug /L .5 ug/L 12DCA 1,2- Dichloroethane 524.2 11/03/2012 NO ug /L .5 ug /L 12DCB 1,2- Dichlorobenzene 524.2 11/03/2012 NO ug /L .5 ug /L 12DCP 1,2- Dichloropropane 524.2 11/03/2012 NO ug /L .5 ug /L 135TMB 1,3,5 - Trimethylbenzene 524.2 11/03/2012 NO ug /L .5 ug /L 13DCB 1,3- Dichlorobenzene 524.2 11/03/2012 ND ug /L .5 ug /L 13DCP 1,3- Dichloropropane 524.2 11/03/2012 ND ug /L .5 ug /L 14DCB 1,4- Dichlorobenzene 524.2 11/03/2012 ND ug /L .5 ug /L 22DCP 2,2- Dichloropropane 524.2 11/03/2012 ND ug /L .5 ug /L 2CLTOL 2- Chlorotoluene 524.2 11/03/2012 ND ug /L .5 ug /L 4CLTOL 4- Chlorotoluene 524.2 11/03/2012 ND ug /L .5 ug /L 41PTOL 4- Isopropyltoluene 524.2 11/03/2012 ND ug /L .5 ug /L AAVE Vinyl Acetate 524.2 11/03/2012 ND ug /L 10 ug /L ACETNE Acetone 524.2 11/03/2012 ND ug /L 10 ug /L ACROLN Acrolein 524.2 11/03/2012 ND ug /L 10 ug /L ACRYLO Acrylonitrile 524.2 11/03/2012 ND ug /L 10 ug /L 32CLEE Ole (2- chloroethyl) ether 524.2 11/03/2012 NO ug /L 5 ug /L BENZ Benzene 524.2 11/03/2012 NO ug /L .5 ug /L BRBENZ Bromobenzene 524.2 11/03/2012 NO ug /L .5 ug /L c12DCE cis- 1,2- Dichloroethene 524,2 11/03/2012 NO ug /L .5 ug /L 03DCP cis- 1,3- Dichloropropene 524,2 11/03/2012 NO ug /L .5 ug /L CC12F2 Dichlorodifluoromethane 524,2 11/03/2012 NO ug /L .5 ug /L CC13F Trichlorofluoromethane(Freon 11) 524.2 11/03/2012 2.4 ug /L .5 ug /L CC14 Carbon tetrachloride 524.2 11/03/2012 NO ug /L .5 ug /L CH2Br2 Dibromomethane 524.2 11/03/2012 NO ug /L .5 ug /L CH2BrC Bromochloromethane 524.2 11/03/2012 NO ug /L .5 ug /L Approval Group: WQ 1211012012 12:55 OCWD WRMS RPT#: 3587 Page 1 Of Approved: Yes 'J * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 State Well Number: 04S/10W -36Q01 Station Type: WELL CASING Well Owner: SANTA ANA Pert Interval (H bgs): 307 -1030 Well Name: Well No. 32 Aquifer: UNDEFINED City: SANTA ANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -02 Sample ID: 12027248 Laboratory: OCWD Sample Dateffime: 11/01/2012 13:50 Analysis Requested: 524 Sample Depth(ft): Receive Data /Time: 11/01/201214:40 Sample Matrix: WATER Number of Bottles: 6 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: Y Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL RUNNING TO WASTE; WELL ON AT 0606 11/1 Parameter Analysis Dates Results Detect Limits Abbreviation Name Method Extract Analysis Value Units Value Units CH2Cl2 Methylene Chloride 524.2 11/03/2012 NO ug /L .5 ug /L CH313r Bromomethane 524.2 11/03/2012 NO ug /L .5 ug /L CH301 Chloromethane 524.2 11/03/2012 ND ug /L .5 ug /L CHBr2C Dibromochloromethane 524.2 11/03/2012 ND ug /L .5 ug /L CHBr3 Bromoform 524.2 11/03/2012 NO ug /L .5 ug /L CHBrC1 Bromodichloromethane 524,2 11/03/2012 NO ug /L .5 ug /L CHC13 Chloroform 524.2 11/03/2012 NO ug /L .5 uglL CHTFEE Chlorotrifluoroethene 524.2 11103/2012 NO ug /L 5 ug /L C13F3E Trichlorotrifluoroethane (Freon 113) 524.2 11/0312012 NO ug /L .5 ug /L CLBENZ Chlorobenzene 524.2 11/03/2012 NO ug /L .5 ug /L CIETHA Chlorcelhane 524.2 11/03/2012 NO ug /L .5 ug /L CS2 Carbon Disulfide 524.2 11/0312012 NO ug /L .5 ug /L D30P 1,2- Dibromo- 3- chloropropene 524.2 11/03/2012 NO ug /L .5 ug /L DIPE Diisopropyl ether 524.2 11/03/2012 NO ug /L 1 ug /L EDB 1,2- Dibromoethane 524.2 11/03/2012 NO ug /L .5 ug /L ETBE Ethyl tert -butyl ether 524.2 11/03/2012 NO ug /L 1 ug /L EtBENZ Ethylbenzene 524.2 11/03/2012 ND ug /L .5 ug /L FR123A Freon 123a 524.2 11/03/2012 NO ug /L .5 ug /L FREN22 Chlorodiflucromethane 524.2 11/03/2012 NO ug /L .5 ug /L HCIBut Hexachlorobutadiene 524.2 11/03/2012 NO ug /L .5 ug /L ISPBNZ Isopropylbenzene 524.2 11/0312012 NO ug /L .5 ug /L MBK 2- Hexanone 524.2 11/03/2012 NO ug /L 10 ug /L MEK Methyl Ethyl Ketone (MEK) 524.2 11103/2012 NO ug /L 5 ug /L MIBK Methyl lsobulyl Ketone(MIBK) 5242 11/03/2012 NO ug /L 5 ug /L mp -XYL m,p- Xylene 524.2 11/03/2012 NO ug /L .5 ug /L MTBE Methyl led -butyl ether 524.2 11/03/2012 NO ug /L .2 ug /L NAP Naphthalene 524.2 11/03/2012 NO ug /L .5 ug /L nBBENZ n- Butylbenzene 524.2 11/03/2012 NO ug /L .5 ug /L NBENZ Nitrobenzene 524.2 11/03/2012 NO ug /L 5 ug /L o -XYL o- Xylene 524.2 11/03/2012 NO ug /L .5 ug /L POE Tetrachloroethene 524.2 11/03/2012 NO ug /L .5 ug /L PRPBNZ Propylbenzene 524.2 11/03/2012 ND ug /L .5 ug /L sBBENZ sec - Butylbenzene 524.2 11/03/2012 NO ug /L .5 ug /L STYR Styrene 524.2 11/03/2012 NO ug /L .5 ug /L 112DCE trans -1,2 Dichloroethene 524.2 11/03/2012 NO ug /L .5 ug /L tl3DCP trans- 1,3- Dichloropropene 524.2 11/03/2012 NO ug /L .5 ug /L Approval Group: WQ 1211012012 12:55 OCWD WRMS RPT #: 3587 Page 2 of 3 Approved: Yes 251 -41 * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Station Type: WELL CASING Pert Interval (ft bgs): 307 -1030 Aquifer: UNDEFINED State Well Number: 04S110W -36Q01 WellOwner: SANTAANA Well Name: Well No. 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -02 Sample ID: 12027248 Laboratory: OCWD Sample Date/Time: 11/01/201213,50 Analysis Requested: 524 Sample Depth(ft): 524.2 Receive Date /Time: 11/01/201214:40 Sample Matrix: WATER Number of Bottles: 6 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: Y Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program 524.2 Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL .5 RUNNING TO WASTE; WELL ON AT 060611/1 TOLU Parameter Analysis Dates Results Detect Limits Abbreviation Name Method Extract Analysis Value Units Value Units TAME Tert-amyl methyl ether 524.2 11/0312012 NO ug /L 1 ug /L TBA tart-butyl alcohol 524.2 11/03/2012 ND ug /L 2 ug /L tBBENZ tert- Butyl benzene 524.2 11/03/2012 NO ug /L .5 ug /L TOP Trichloroethene 524.2 11103/2012 NO ug /L .5 ug /L TOLU Toluene 524.2 11/03/2012 NO ug /L .5 ug /L TOTALX Total Xylenes(m,p, &o) 524.2 11/03/2012 ND ug /L .5 ug /L TTHMs Total Trihalcmethanes 524.2 11/03/2012 NO ug /L .5 ug /L VNYLCL Vinyl chloride 524.2 11/03/2012 NO ug /L .5 ug /L x13DCP Total 1,3- Dichloropropene 524.2 11/03/2012 NO ug /L .5 ug /L Approval Group: WQ Approved: Yes 251 -42 1211012012 12:55 OCWD WRMS RPT #: 3587 Page 3 of 3 * * * * ** PRELIMINARY * * * * ** ORANGE COUNTY WATER DISTRICT TEMPORARY SAMPLE INFORMATION AND RESULTS Station Name: SA -32/1 Station Type: WELLCASING Pert Interval (R bgs): 307 -1030 Aquifer: UNDEFINED State Well Number: 04S /10W -36401 Well Owner: SANTA ANA Well Name: Well No 32 City: SANTAANA Sample Group ID: 12013607 Lab Sample Number: 12110023 -03 Sample ID: 12027249 Laboratory: OCWD Sample Dateffime: 11/01/201213:50 Analysis Requested: 14DIOX Sample Depth(R): ug /L Receive Date /Time: 11/01/201214:40 Sample Matrix: WATER Number of Bottles: 6 Sampling Method: DEDICATED PUMP Field Filtered: N Sampling Agency: ORANGE COUNTY WATER DISTRICT Field Preserved: Y Sampled By: BRIAN OKEY Field Cooled: Y Monitoring Program: Unknown Water Quality Program 14DIOX 11/03/2012 Comments: Well has been COS since 2004. Not sampled for T -22, but for SA to explore returning the well to service. WELL EDB RUNNING TO WASTE; WELL ON AT 060611/1 14DIOX 11/03/2012 Abbreviation Parameter Name Analysis Method Extract Dates Analysis Value Results — Units — Value Detect Limits Units 123TCP 1,2,3 - Trichloropropane 14DIOX 11/03/2012 NO ug /L .005 ug /L 14DIOX 1,4- Dioxane 14DIOX 11/03/2012 NO ug /L 1 ug /L 2CIEVE 2- Chloroethylvinyl ether 14DIOX 11/03/2012 NO ug /L 1 ug /L DBCP 1,2- Dibromo -3- chloropropane 14DIOX 11/03/2012 NO ug /L .01 ug /L EDB 1,2- Dibromoethane 14DIOX 11/03/2012 ND ug /L .005 ug /L MITC Methylisothlocyanate 14DIOX 11/03/2012 ND ug /L .01 ug /L Approval Group: WQ Approved: Yes 251 -43 1211012012 12:55 OC WD WRMS RPT#: 3587 Page 1 of 1 Clinical Laboratory of San Bernardino, Inc. Santa Ann, City of Project: Routine Work Order: M0158 220 S Daisy Ave, Bldg A Sub Project: Well 32NO3 Received: 1110211215:05 Santa Ana CA, 92703 Project Manager: Nabil Saba Reported: 11/05/12 SA 1 Well 32 12KO158-01(Water) Sample Date: 11/01/12 6:06 Sampler: RobertHemaudez Amdym Method Result Units Rep. Limit MCL Prepared Analyzed Batch Qualifw General Chemical Analyses Nitrate (NO3) EPA300.0 43 mg/L 2.0 45 11/02!12 11/02/12 1244373 SA2 12K015"2 (Water) Sample Date. lV01112 6:11 Sampler: Robert Hernandez Analyte Method Result Units Rep. Limit MCL Prepared Analyzed - Batch Qualifier General Chemical Analyses - - Nitrate (NO3) EPA 300.0 42 mg/L 10 45 11=12 11002/12 1244373 SA 3 12K0158A3 (Water) Sample Date: 11/01/12 6:20 Sampler: Robert Heruaudez Analyte Method Result Units Rep. Limit MCL Prepared Analyzed Batch Qualifier General Chemicat Analyses Nitrate (N`03) EPA 3000 43 mgt 2.0 45 11102/12 11/01/12 1244373 SA4 12KO158- 04(Water) Sample Date: 11 /01/12 6:35 Sampler: Robert Hernandez Analyte Method Result Units Rep. Limit MCL Prepared Analyzed Batch Qualifier General Chemical Analyses Nitrate (NO3) EPA 300.0 43 mg/L 2.0 45 11/02112 11/0]112 1244373 SA5 12KO158 -05(Water) Sample Date: 11/01/12 7:05 Sampler: Robert Hernandez Analyte Method Result Units Rep. Limit MCL Prepared Analyzed Batch Qualifier General Chemical Analyses Nitrate (NO3) EPA 300.0 65 mVL 2.0 45 11/02/12 11/02/12 1244373 SA6 12KO158 -06(Water) Sample Date: 11 101/12 8:05 Sampler: Robert Hernandez Analyte Method Result Units Rep. Limit MCL Prepared Analyzed Batch Qualifier General Chemical Analyses Nitrate (NO3) EPA 300.0 43 mg/L 2.0 45 11/02/12 11/02/12 1244373 Robin Glenney Project Manager Page 1 oft Post Office Box 329 San Bernardino, CA 92402 (909) 825 »7693 Fox(909)825-7696 ELAPNumber ]088 251 -44 Clinical Laboratory of San Bernardino, Inc. Santa Ana, City of ProjecL Routine Work Order: 12KO158 220 S Daisy Ave, Bldg A Sub Project: We1132 NO3 Received: 1110202 15:05 Santa Ana CA, 92703 Project Manager. Nabil Saba Reported: 11/05/12 SA7 12K015S- 07 (Water) Sample Date: 11/01/12 9:05 Sampler: RobertHernandez Analyze Method Result Units Rep. Limit MCL prepared Analyzed Batch Qualifier General Chemical Analyse_s Nitrate (NO3) EPA 300,0 43 MZ& 2.0 45 11/02/12 11/02/12 1244373 SA8 12KO158- 08(Water) Sample Date: 11/01/12 12:05 Sampler: Robert Hernandez Anelyte Method Result Units Rep. Limit MCI, Prepared Analyzed Batch Qualifier Geaeral Chemical Analyses Nitrate (NO3) EPA 300.0 43 mg/L 2.0 45 11102112 IM2112 1244373 SA 9 12KO158 -09 (Water) Sample Date: 11/01112 3:05 Samplers Robert Hernandez Analyze Method Result Units Rep. Limit MCL prepared Analyzed Batch Qualifier General Chemical Analyses Nitrate (NO3) EPA 300,0 42 mg/L 2,0 45 11/02/12 11/02/12 1244373 SA 10 12KO158 -10 (Water) Sample Date: 11/01/12 6:05 Sampler: Robert Hernandez Analyze Method Result Unitas Rep. Limit MCL Prepared Analyzed Batch Qualifier General Chemical A —RaWes Nitrate (NO3) EPA 300,0 41 mg/L 2.0 45 11/02!12 11/02/12 1244373 ND Analyte Nl7T DETECTED at or above the mpordng limit Robin Oenney Project Manager Page 2 of 2 Post Offrce Box 329 San Bernardino, CA 92402 (909) 825 -7693 Fax(909)825-7696 &LAP Number 1088 251 -45 Y% TURN AROUND TIME Lo 0 a JHaloaceticAcids irihalomathanes General Physical Nitrite Nitrate Fluoride 0 ` HPC [Dliform PJA LL a Residual7ota (field) LL O PRESERVATIVES Q a R J a � I � J n N Q } m W E �aA N 1 9 =1 0 z u QLLo D Q m N � n m T E h vO p E Z o vi re � d 251 -46 3 D a �C c r � z � � O z � a a W P a ry 0 a D Q v �} .p D Q s� o F D P s n W w APPENDIX B Equipment Data Sheets '►1 L HP1220HF SYSTEM SYSTEM SPECIFICATION SUMMARY HP1220HF Liquid Phase Ion Exchange Systems are designed to treat a wide range of contaminated process streams. All piping and valves are configured for single vessel operation. System includes inlet and outlet piping, and backwash capabilities. The system consists of two (2) exchange vessels, with all piping, valves, and gauges assembled for ease of operation. The vessel is equipped with an underdrain capable of a maximum flow rate of 2000 GPM. EACH VESSEL: Vessel Diameter ........................ Side Shell Height ....................... Overall Height (Approx.) ............ Maximum Working Pressure...... Manway: Flanged at side shell Elliptical type at head Vessel Volume ........................... Resin Bed Volume - Typical ........ Maximum Flow Rate .................. Design Criteria ........................... Code Stamping .......................... Material....... ............................... Supports..... ............................... Lifting .......... ............................... Seismic....... ............................... Interior Surface Prep .................. Interior Surface Coating ............. Exterior Surface Primer ............. Exterior Surface Coating............ Standard Color ........................... . ..........................144„ ............................. 60„ .................. ... ... 15,_4„ ...... 125 psi @ 150 °F ............................. 24„ ....................14" x 18,. .................... 7520 gal ................300 -600 Ft3 .................2000 GPM ........................ ASME ........................... YES ............. Carbon Steel .Legs and Baseplates ................Lifting Lugs ................... IBC 2007 ............... ............................... SSPC-SP5 ...................... Plasite 4110 35 mil dft min .... Rust Preventative Epoxy 4 mil min dft ...........High Solids Urethane 3mil min dft ........................... ............................... Tan UNDERDRAINS: External Ring Header ..................................... ............................12" Carbon Steel Screens ...................... 8 ea 316L Stainless Steel V -Wire Screens 6 5/8" dia x 12" VALVE ASSEMBLY AND PIPING: Piping: Process Piping ............ Resin Transfer Piping.. ......................12" Carbon Steel 4" Sch 10 304L Stainless Steel Valves: Process ....... .12" Butterfly, Cast Iron Body w /Stainless Disk, Gear Operator Resin Transfer ...............4" Fanged 316 Stainless Steel Full Port Ball Valve Vent/Wash ....................................... .............................2" Bronze Ball Valve Sample Ports ( 3) ............................. ...........................1/2" Bronze Ball Valve SYSTEM WEIGHT: System Shipping Weight.... Resin Weight .................... System Operating Weight.. 251 -48 46,000 lb 25,200 lb 169,000 lb Vantage TM Pre-Treatment - Industrial (PTI) Series Softeners: High Flow Systems VantageTM Pre - Treatment — Industrial (PTI) series softeners by Siemens Water Technologies offer a flexible, reliable and feature -rich way to reduce hardness in your feed water. PTI systems are available in Simplex, Duplex or Triplex configurations, and these pre - engineered, pre - assembled and factory - tested units minimize installation and startup time. Each configuration is controlled by a main control panel with solenoid panels on the other vessels. Softeners are available in either PVC or 316L Stainless Steel face piping and internals. Vessel diameters range from 72" (182.88 cm) to 120" (304.8 cm) for high flow systems. Each softener contains cation resin shipped in sodium form. VantageT" PTI High Flow Softeners come in three models. • Plus (P) — Controlled by Siemens PLC and user friendly touch screen HMI, PVC face piping and internals • Deluxe (D) - Controlled by Siemens PLC and user friendly touch screen HMI, 316L SS face piping and PVC internals • Select (S) - Controlled by Siemens PLC and user friendly touch screen HMI, 316L SS face piping and internals; hardness monitor comes standard with this model. A brine pump skid is included with all high flow systems. A separate brine hub and radial for brine injection is part of each unit. The regeneration of the cation resin is accomplished via a co— current process through the separate brine hub and radial. Water Technologies �1 Simplex Softener Filter SIEMENS The brine pump skid requires a customer - provided brine source, and the regeneration process is fully automated via the main control panel. Pumps for this skid are titanium to minimize rust and corrosion. The Plus, Deluxe and Select models are available in five operational flow configurations depending on the number of vessels. ■ Simplex Operation — single vessel operation s Duplex Alternating — one vessel on, one vessel in standby is Parallel — all vessels working together is 2 + 1 — two vessels working and one vessel in stand by for back wash support ■ Pro Flow — two vessels working and the third vessel in stand by, for when demand requires additional water from the third vessel Brine Pump Skid Specifications Plus, Deluxe and Select High Flow Models * Vessels Shipped on Side in cm in ' cm in cm in cm I Ibs kg Ibs kg 7202 73 185 92 234 148 376 128 325 16450 7478 16273 7397 84x84 * 84 213 106 269 163 '414 106 269 25483 11584 24976 11354 96x96 * 108 274 113 287 178 452 113 287 7964 3620 36278 16491 120x96 * 128 325 146 371 ' 988. 478 146 371 10696 4862 55007 25004' * Vessels Shipped on Side * For Duplex systems double flaws I quantities; for Triplex systems triple flows I quantities Siemens © 2009 Siemens Water Technologies Corp. Vantage is a trademark of Siemens, its subsidiaries or affiliates. Water Technologies PWS- SOFTHF -DS -0209 10 Technology Drive Subject to change without prior notice. The information provided in this literature contains merely general Lowell, MA 01851 Technical Support: 800.875.7873 ext 5000 descriptions or characteristics of performance which in actual case Customer Support: 800.466.7873 Tank Phone: 978.934 9349 ext 5000 result of further development of the products. An obligation to Active provide the respective characteristics shall only exist if expressly agreed in the terms of the contract. Pipe Pipe Min. Flow. Recommended Flow Rate Flow Rate Flow Rate Tank %Media Media Flow@ - Shell Area Media Size Size Rate @ Max Flow Rate @ @ 3' @ 5 @ 7 Diameter Free- per 7.5 Height (sgft) Depth PVC 55 2 gpmisgft 20 gpm /sgft gpm /tuft gpm /tuft gpm /cuff (in) board vessel gpm /sgft (Pt) (In) (cuft) @85 °F PTISxxx72x72 6 4 57 565 297 495 565 72 6 28.3 54% 42 99 212 PTISxxx84x84 6 6 77 .770. 471 770 770 84 7 38.5 56% 48 159 -289 PTISxxx96x96 6 6 101 1005 700 1005 1005 96 8 50.3 57% 56 236 377 PTISxxxl 20x96 6 8 157 1571 1104 1571 1571 120 9 78.5 57% 56 368 589 * For Duplex systems double flaws I quantities; for Triplex systems triple flows I quantities Siemens © 2009 Siemens Water Technologies Corp. Vantage is a trademark of Siemens, its subsidiaries or affiliates. Water Technologies PWS- SOFTHF -DS -0209 10 Technology Drive Subject to change without prior notice. The information provided in this literature contains merely general Lowell, MA 01851 Technical Support: 800.875.7873 ext 5000 descriptions or characteristics of performance which in actual case Customer Support: 800.466.7873 of use do not always apply as described or which may change as a Phone: 978.934 9349 ext 5000 result of further development of the products. An obligation to Fax: 978.441.6025 provide the respective characteristics shall only exist if expressly agreed in the terms of the contract. 25I -50 www.siemens.com /water SIEMENS Equipment Specifications PTI Series Softener (72" -120" Diameter- High Flow Series) GENERAL SYSTEM DESCRIPTION General Description High Purity Solutions Standard Products The softening units are designed and manufactured for industrial applications in sizes from 72" to 120" diameter tanks. The units are available in three configurations (Simplex, Duplex, and Triplex) and with three packaged options (Plus, Deluxe, and Select). Duplex and triplex configurations have multiple modes of operation to maximize operational flexibility. These units are rugged, pre- engineered units that minimize expensive installation and start-up costs. They require simple utility connections, media loading, and minor configuration for immediate online service. Duplex and triplex configurations are shipped as individual units in order to minimize installation labor while maximizing orientation flexibility. The softener's simple design maximizes the efficiency and repeatability of the unit during the service and regeneration modes in order to provide a truly reliable water treatment unit. Mechanical Description The softener consists of steel pressure vessel(s) that contain C -211 cation resin along with 2 support bed layers. The pressure vessels are sandblasted, lined with an NSF approved material, and painted with a durable epoxy coating. The piping and tank internals are constructed of schedule 80 PVC or Schedule 10, 316L stainless steel. All automatic valves are actuated pneumatically. Adjustable travels stops are included on the service, backwash, rinse outlet, and brine valves in order to set the flows based on system requirements. A relief valve sized for thermal expansion pressure relief is also supplied on each tank. Four structural steel legs, designed to meet International Building Code (IBC) to meet the requirements in 98% of North American installations, support each vessel. All interconnect piping on duplex and triplex systems are by others. A brine pumping and dilution skid is provided. The unit is provided with sch80 PVC piping. A customer supplied brine silo or equivalent supplies a 26% brine solution to the inlet of the brine pumping system. A separate water source (preferably softened water) supplies the dilution side. A CRT series Grundfos vertical pump boosts the 26% brine solution pressure. Two rotameters allow the flow of each fluid to be accurately set for the dilution of the 26% brine solution to desired concentration (6 -10 %). The customer must connect the brine skid to the softener with schedule 80 PVC or similar corrosion resistant material. PTI Series Softeners Page 1 Rev. 1, February 2009 S5131 -020 251 -51 IE High Purity Solutions lip, Standard Products An overview of the configuration and trim packages available is shown in the table below. Overview Trim Packages Item Detail Plus Deluxe Select Configurations Simplex X X X Duplex X X X Triplex X X X Control PLC /HMI PLC /HMI PLC /HMI Vessel Non - Code X X X ASME X X X Face Piping Material PVC 316L SS I 316L SS Internals Upper/Lower PVC PVC 316L SS Other Hardness Monitor Option Kit Option Kit X DL Sight Glass PVC PVC Borosilicate PSV (Thermal) X X X Air Vent Auto Valve Auto Valve Auto Valve Electrical Description For High Flow systems, the Control Panel is mounted on Unit A. For Duplex and Triplex systems, individual Solenoid Panels provide valve control on each additional vessel (Unit B, or, Unit B and Unit Q. The Solenoid Panels contain the solenoid valves and terminal blocks for field wiring connections. High Flow vessels are free standing units (not skid mounted) and will require field wiring (by others) between the Control Panel and Solenoid Panel(s) for Duplex and Triplex systems. A single Control Panel will provide control and monitoring for Simplex, Duplex, and Triplex Filter configurations. The Control Panel is provided complete with a programmable logic controller and operator interface. An S7 -200 Siemens Programmable Logic Controller (PLC) Processor, model CPU224XP, is utilized to provide reliable control of the system's operating and safety functions. A Siemens Human Machine Interface (HMI), model TP 177B PN /DP (6" Color Touch Screen), acts as the interface between the operator and the process. An Ethernet module is provided for communication with a SCADA or other control system. A Brine Injection Pump Panel is provided to allow motor control of the Brine Pump. This pump is utilized during the brine intro step of a Regeneration Cycle. Field wiring from the Control Panel to the Brine Injection Pump Panel is required. Control of the Brine Pump is maintained at the Control Panel from the HMI. A green "Pump Running" pilot light is provided on the front of the Brine Injection Pump Panel for run status. Operational Description The Softener has the following Modes of Operation and Regeneration Cycle steps based on the flow configuration and vessel arrangement (Simplex, Duplex, or Triplex configuration): Simplex • Modes of Operation: 3 (Offline, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) PTI Series Softeners Page 2 Rev. 1, February 2009 S5131 -020 251 -52 SIEMENS EN High Purity Solutions Standard Products Simplex operation consists of one vessel that will run in Service mode. Upon request of a Regeneration Cycle, the unit will regenerate accordingly. After completion of the Regeneration Cycle, the unit will return to Service mode. Duplex Parallel • Modes of Operation: 3 (Offline, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) Duplex Parallel operation consists of two vessels that will both ran in Service mode. Upon request of a Regeneration Cycle, both units will regenerate consecutively (Unit A, then, Unit B), leaving one unit online at all times. Duplex Alternating • Modes of Operation: 4 (Offline, Standby, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) Duplex Alternating operation consists of two vessels that will run with one in Service mode, and one in Standby mode. Upon request of a Regeneration Cycle, the vessel in Service mode will regenerate, while the vessel in Standby mode will enter Service mode. Triplex Parallel • Modes of Operation: 3 (Offline, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) Triplex Parallel operation consists of three vessels that will all run in Service mode. Upon request of a Regeneration Cycle, all units will regenerate consecutively (Unit A, then, Unit B, then, Unit C), leaving two unit online at all times. Triplex 2 Online / 1 Standbv • Modes of Operation: 4 (Offline, Standby, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) Triplex 2 Online / 1 Standby operation consists of three vessels that will run with two in Service mode, and one in Standby mode. Upon request of a Regeneration Cycle, the vessels in Service mode will regenerate consecutively. The vessel in Standby will enter Service mode. After completion of the Regeneration Cycles, the last vessel to be regenerated will enter Standby mode. Triplex Pro -Flo • Modes of Operation: 4 (Offline, Standby, Service, and Regeneration) • Regeneration Cycle Steps: 4 (Backwash, Brine Intro, Slow Rinse, and Fast Rinse) Triplex Pro -Flo operation consists of three vessels that will run with two in Service mode (Primary vessel and Secondary vessel), and one in Standby mode (Tertiary vessel). When product flow rises above a pre - defined setpoint, the vessel in Standby mode will enter Service mode. This vessel will return to Standby mode when product flow falls below the pre - defined setpoint. Upon request of a Regeneration Cycle, all units will regenerate PTI Series Softeners Page 3 Rev. 1, February 2009 55131 -020 251-53 SEE! High Purity Solutions Standard Products consecutively (Primary vessel, Secondary vessel, then, Tertiary vessel). When a vessel is being regenerated, the remaining two vessels will be in Service mode. After completion of the Regeneration Cycles, the vessel assignment will return to the state they were in prior to the initiation of the Regeneration Cycle. SYSTEM DESIGN SPECIFICATIONS The design specifications for the PTI series softeners are listed in this section. PRODUCT OFFERING OVERVIEW: ** While operating in a 2 to 1 mode, the flow rates match a duplex unit. While operating in a progressive flow mode, the minimum flow *** Flow rates maybe limited to 20 gpm/sqft. DESIGN PARAMETERS: Configuration Plus Deluxe, and Select Product Flow Rates (ppm) Triplex Min. Flow (2 gpmisgft) Best Flow (3 gpmlcuft) Better Flow (5 gpmlcuft) * ** Good Flow (7 gpmlcuft) * ** Model Number Simplex Duplex* Triplex ** Simplex Duplex* Triplex ** Simplex 5 gpm /ft3 (Limited by 20 gpm/ftz for 84" dia and larger) riplex — Simplex Duplex* Triplex ** PT.I$ 72X72 57 - 113 170 297 . -: 594 89.1 495 30,000 grains /ft3 Regeneration 665 1131 1696 PTIS 84X84 77 154 231 471 942 1413 770 A2011 770 1539 2309 PTI$ 96X36 101 .;,.201 30'2 708 ,:1416 214 '1005:_' E4712 1005 2011 -` 3016 _. 1571 1571 3142 4712 * Whil, nneratino in a duplex Ao,'rn.n" mode. the product flow rates are the same as a simplex unit. ** While operating in a 2 to 1 mode, the flow rates match a duplex unit. While operating in a progressive flow mode, the minimum flow *** Flow rates maybe limited to 20 gpm/sqft. DESIGN PARAMETERS: Configuration Simplex Duplex Triplex Feed Temperature 60 °F Feed Pressure 45 psig Maximum Inlet Turbidity* 5 NTU (Nephelometric Turbidity Units) Maximum Inlet TDS* 750 ppm as CaCO3 (29.2 grains /gallon) Sizing: Service Flow Rate 3 gpm /ft3 5 gpm /ft3 (Limited by 20 gpm/ftz for 84" dia and larger) 7 gpm/ft3 (Limited by 20 gpmi in all cases) Backwash Flow Rate Adjustable via valve travel stops Rinse Flow Rate 1.5 gpm/ft3 Bed Depth 42" — 56" Freeboard 54 % -57% of the tank side sheet volume Resin Siemens C -21 1B cation resin, 8% cross - linked Capacities 30,000 grains /ft3 Regeneration 15 Ibs (dry) NaCI per fit' (5.77 gallons of saturated NaCl/ ft') Support Bed 3" depth of 94 quartz (1.54mm average size) 2" over laterals - /4 x I/V quartz * Ifprocess is not within the given limit, then contact applications engineeringfor assistance. PTI Series Softeners Page 4 Rev. 1, February 2009 S5131 -020 251-54 SIEMENS OPERATING LIMITS: High Purity Solutions Standard Products Feedwater Temperature: Unit Description Minimum 45 °F Maximum 95 °F for PVC piping systems Rating 120 °F for stainless steel piping systems Feedwater Pressure: 100 psig ASME code with stamp Minimum 45 psig Maximum 90 psig max to prevent premature discharge of pressure relief valve GENERAL SPECIFICATIONS: Pressure Vessels Tank Property Unit Description Description Materials All Carbon steel Rating All Trim Packages 100 psig non -code 100 psig ASME code with stamp Support: All Four structural steel legs, Seismic IBC* Access Openings: 72 " -84" dia. One 12" by 16" crab style - top of vessel 96" -120" dia. Two 14" by 18" crab style - top & lower side of vessel Process Connections Main Process grooved connections (NSF Approved Fittings and Pipe) 72 " -84" dia. Carbon steel pad flange 96" -120" dia. Double drilled 316 SS pad flanges Sluice/Brine Carbon steel pad flange Vent 316L stainless steel FPT Paint All 4 to 6 mils DFT epoxy Lining All 12 to 16 mil DFT epoxy (NSF -61 Approved) * See Regulations and Standards for detailed seismic information. Pumps Unit Unit Description Description Brine Skid 72 " -84" dia Grundfos CRT4 -2, 3/4 HP 96" -120" dia Grundfos CRT8 -1, 3/4 EP Distribution Systems Distributor Unit Description Description Upper Plus, Deluxe Schedule 80 PVC Multi -point distributor Select Schedule 10 316L stainless steel Multi -point distributor Lower (under drain) & Brine Plus, Deluxe Schedule 80 PVC hub and radial Select 316L stainless steel hub and radial Piping Systems Piping Unit Description Description Face Piping Plus Schedule 80 PVC socket welded, flanged, threaded, and rooved connections (NSF Approved Fittings and Pipe) Deluxe, Select 316L stainless steel flanged, threaded, and grooved connections Brine Pump Skid All Schedule 80 PVC socket welded., flanged, threaded, and grooved connections (NSF Approved Fittings and Pipe) PTI Series Softeners Page 5 Rev. 1, February 2009 S5131 -020 251 -55 SIEMENS GENERAL SPECIFICATIONS (continued): Process Valves High Purity Solutions Standard Products Sample Valves Valve Size Description -Package All 1" and larger Bray, cast iron, lug style, butterfly valve with BPDM seats Deluxe, Select One VV 316 SS plug valve and stainless steel disk. The brine valve as well as service, Plus One'' /" PVC ball valve backwash, and drain outlet valves have adjustable travel One 1/4" 316 SS plug valve Plus, Deluxe stops to set flows. Select Actuation Air to Open / Spring to Close All — Brine Skid 1" and larger OF 546 series, PVC ball valve Sample Valves Valve Unit Description Description - Inlet Sample Plus One Y" PVC ball valve Deluxe, Select One VV 316 SS plug valve Product & Drain Sample Plus One'' /" PVC ball valve Deluxe, Select One 1/4" 316 SS plug valve INSTRUMENTATION SPECIFICATIONS: Instrument Unit Description Description Pressure Gauges All 316 SS, 63mm dial, FDA approved glycerin filled, ' /a" NPT Flow Sensors All Signet 2536 paddlewheel Rotameter Brine Skid King Instruments 7200 series rotameter Hardness Monitor Plus, Deluxe Optional (See Options Section) Hach SP -510 Select Included - Bach SP -510 Pressure Differential Switch Optional Kit 316ss process connection and diaphragm, '/<" NPT PTI Series Softeners Page 6 Rev. 1, February 2009 S5131 -020 251 -56 SIEMENS High Purity Solutions Standard Products CONTROLS SPECIFICATIONS FOR PLC PACKAGES (PLUS, DELUXE AND SELECT MODELS): Main control panel Activation of this signal confirms that the Softener is in a Solenoid panel (Unit B) Carbon Steel enclosure, frame mounted, NEMA 4, ANSI Solenoid panel (Unit C) 61 gray Brine injection pump panel condition. (Dry contacts) Programmable Logic Controller Siemens S7/200 CPU224XP w/ Ethernet (PLC) intro step of a regeneration cycle. The contacts are wired to the Discrete 24 point (14 input and 10 output) (Expandable) PLC input/output Analog 2 input and 1 output (Expandable) Discrete 8 point output module(s) for larger configurations HMI — Color Touch Screen Siemens TP17713 DP /PN with Ethernet Shutdown alarms Emergency Stop Pushbutton Activated All alarms (popup alarm banner) Product flow, drain flow HMI status indicator /value Process inlet, process outlet, backwash outlet, backwash inlet, brine inlet, rinse outlet valve status Softener status FV -07A Open (All configurations) FV -07B Open (Duplex & Triplex configurations) FV -07C Open (Triplex configurations) O£fline / online select Regeneration cycle method select HMI Switches / Pushbuttons / Manual regeneration cycle initiate Pilot Lights Regeneration cycle step advance Regeneration cycle step hold Totalized flow reached — regeneration cycle start delay Totalized product flow reset Alarm silence Alarm reset Pump running pilot light (on Brine Injection Pump Panel) Miscellaneous controls Alarm hom and alarm pilot light Auxiliary contacts for fault INTERFACE COMMUNICATION SPECIFICATIONS: In regeneration cycle Activation of this signal confirms that the Softener is in a regeneration cycle. (Dry contacts) Fault Activation of this signal confirms that the Softener is in a fault condition. (Dry contacts) Activation of this signal confirms that the Softener is in brine Brine Pump intro step of a regeneration cycle. The contacts are wired to the Brine Injection Pump Panel. (Dry contacts Backwash Pump Activation of this signal confirms that the Softener is in backwash step of a regeneration cycle. (Dry contacts) S5131 -020 251 -57 EMEM High Purity Solutions Standard Products REGULATIONS & STANDARDS: Pressure Vessel Codes None Drawings Optional: ASME Section VIII Surface Preparation SSPC SP -10 for vessel interior Quality Documents SSPC SP -6 for external steel surfaces Electrical NEMA 4 Seismic Rating IBC (2006) S Si = 1.1 471/11.3 Ss = 2.5 1104/13.2 Seismic Use = Group I S Seismic Design Category = E 770/17.5 Site Class — B 1571/19.3 Response Modification Factor = 3 S Concrete = 3000 psi minimum ultimate 28 day strength. Piping Hydrotested to 100 psig DOCUMENTATION PACKAGE: Documents Storage, installation and operating instructions Drawings Process & Instrumentation Diagram (P &ID), General Arrangement w (GA) and Electrical Schematic (Plus, Deluxe, and Select) Quality Documents None 120 x 96 Optional: U-lA form with ASME Code vessels PRESSURE DROP SPECIFICATIONS: All pressure drops are based on a simplex unit with a clean bed. Pressure drop includes all loses from the inlet flange to the outlet flange on the face piping. Interconnect piping on duplex and triplex systems are not included in these calculations. All values are approximate, based on schedule 80 PVC, and 77 °F water. * S is simplex. For Duplex systems, the flow rate doubles and for Triplex, the flow rate triples, but the pressure drop remains the same. ** Flow at 5 gpm/ft3 is limited by 20 gpm/fe for 84" dia, and above. The same is true for all sizes at 7 gpm/ft3. PTI Series Softeners Page 8 Rev. 1, February 2009 S5131 -020 251 -58 *� Flow (gpm) / Pressure Drop (psi) w 72 x 72 84 x 84 96 x 96 120 x 96 0 U 3 gpm/ft3 S 297/9.0 471/11.3 708/14.9 1104/13.2 5 gpm/ ft3 ** S 495/12.6 770/17.5 1005/21.7 1571/19.3 7 gpm /ft3 ** S 565/14.3 770/17.5 1005/21.7 1571 / 19.3 * S is simplex. For Duplex systems, the flow rate doubles and for Triplex, the flow rate triples, but the pressure drop remains the same. ** Flow at 5 gpm/ft3 is limited by 20 gpm/fe for 84" dia, and above. The same is true for all sizes at 7 gpm/ft3. PTI Series Softeners Page 8 Rev. 1, February 2009 S5131 -020 251 -58 SEEM: MEDIA SPECIFICATIONS: High Purity Solutions Standard Products * S is simplex. For Duplex systems, double the media quantities and for Triplex, triple the media quantities. REGENERATION SEQUENCE, TIMES, AND FLOW RATE: .k Media Quantities Media o (ft.'/ lbs.) 0 U 72 x 72 84 x 84 96 x 96 120 x 96 Capacity (KGrains) S 2,970 4,710 7,080 11,040 C -211 Resin S 99/4,950 157/7,850 236/ 11,800 368/18,400 #4 Quartz S 7/700 9 / 900 12/1,200 18/1,800 /" by -W' Quartz S 1 34/3,400 5115,100 72/7,200 130 / 13,000 * S is simplex. For Duplex systems, double the media quantities and for Triplex, triple the media quantities. REGENERATION SEQUENCE, TIMES, AND FLOW RATE: * Outlet Valve is provided with an adjustable travel stopped valve to be field set. PTI Series Softeners Page 9 Rev. 1, February 2009 S5131 -020 251 -59 Flow Rate pm Series (Dia- Std. Duration <40 °F 40 °F to 50 °F to 60 °F to 70 °F to 80 °F to Step Side Sht) (min) 50 °F 60 °F 70 °F 80 °F 90 °F 72X72 119 141 156 170 198 212 84X84 162 192 212 231 269 289 15 Sc U 96X96 211 251 276 302 352 377 m 120X96 330 393 432 471 550 589 m 0 72X72 20.0 d L 84X84 32.0 CO 96X96 48.0 120X96 65.0 30 3 72X72 35.5 0 84X84 56.8 LL 0 96X96 85.2 120X96 115.3 a 72X72 28.4 84X84 38.7 = R 10 96X96 50.7 0 120X96 79.5 V5 72X72 84X84 15 Service Flow Rate w 96X96 m u. 120X96 * Outlet Valve is provided with an adjustable travel stopped valve to be field set. PTI Series Softeners Page 9 Rev. 1, February 2009 S5131 -020 251 -59 SIEMENS CUSTOMER CONNECTION SPECIFICATIONS: PLUS All connections are Class 150, PVC flanges. High Purity Solutions Standard Products * One brine connection per vessel. DELUXE AND SELECT All connections are Class 150, 316L SS flanges. Config 72 x 72 84 x 84 96 x 96 120 x 96 Service Inlet & Outlet S 6" 6" 6" 8" Drain All 6" 6" 6" 8" Brine Inlet* All 2" 2" 3" 3" * One brine connection per vessel. DELUXE AND SELECT All connections are Class 150, 316L SS flanges. * One brine connection per vessel. BRINE PUMP SKID All connections are Class 150, PVC flanges. Config 72 x 72 84 x 84 96 x 96 120 x 96 Service Inlet & Outlet S 4" 6" 6" 8" Drain All 4" 6" 6" 8" Brine Inlet* All 2" 2" 3" 3" * One brine connection per vessel. BRINE PUMP SKID All connections are Class 150, PVC flanges. UTILITY REQUIREMENTS: 72 x 72 1 84 x 84 96 x 96 1 120 x 96 Brine Inlet 1.5" 2" Dilute Inlet 1.5" 2" Outlet 2" 3" UTILITY REQUIREMENTS: * Based on worst case backwash flow at elevated temperature. PTI Series Softeners Page 10 Rev. 1, February 2009 S5131 -020 251-60 72x72 1 84x84 96x96 120x96 Electrical service 120 VAC /1 Phase/60 Hz /10 Full Load Amps Brine pump skid electrical 120 VAC /1 Phase /60 Hz /13.8 Full Load Amps Feedwater pressure range All - 45 psig minimum Plus, Deluxe, and Select - 90 psig maximum recommended to prevent premature discharge of pressure relief valve Air 2 sc &n @ 80 — 100 psig clean, oil -free, dry air Drain requirements Floor & waste drains for general maintenance purposes Maximum Drainage (gpm)* 212 1 289 1 377 589 * Based on worst case backwash flow at elevated temperature. PTI Series Softeners Page 10 Rev. 1, February 2009 S5131 -020 251-60 SIEMENS PHYSICAL DIMENSION SPECIFICATIONS: High Purity Solutions Standard Products NOTE: Dimensions are for a simplex unit and do not include operating space requirements. All weights are approximate and are based on the heaviest options. SOFTENER PLUS MODELS = uimensions are Tor a single unit. uverau aimensions are eeierminea oy instalation. ** Dry unit without media SOFTENER DELUXE & SELECT MODELS v LENGTH WIDTH HEIGHT SHIP HT. WEIGHT ** WEIGHT (in / mm) (in / mm) (in / mm) (in / mm) (Ibs / kg) (Ibs / kg) 72x72* S 86/2184 101 /2565 148/3759 128/3251 3888/1767 16273/7397 84x84* S 97/2464 109/2769 163/4140 109 */2769* 5389/2450 24976/11354 96x96* S 117/2972 125/3175 17814521 125 */3175* 7411 /3369 36278/16491 120x96* S 129/3277 14413658 188/4775 129 */3277* 9900/4500 55007/25004 = uimensions are Tor a single unit. uverau aimensions are eeierminea oy instalation. ** Dry unit without media SOFTENER DELUXE & SELECT MODELS = Dimensions are for a single unit. Overall dimensions are determined by installation. Dry unit without media Brine Pumping Skids LENGTH WIDTH HEIGHT WEIGHT I OPERATING PTI Series Softeners Page 11 Rev. 1, February 2009 S5131 -020 251-61 m c C) LENGTH WIDTH HEIGHT SHIP HT. SHIPPING WEIGHT ** OPERATING WEIGHT I (in / mm) (in / mm) (in / mm) (in / mm) (Ibs / kg) (Ibs / kg) 72x72* HF 84/2134 92/2337 148/3759 128/3251 4065/1848 16450/7478 84x84* HF 95/2413 106/2692 163/4140 106/2692 5896/2680 25483/11584 96x96* HF 115/2921 113/2870 178/4521 113/2870 796413620 36831/16742 120x96* HF 138/3505 146/3708 188/4775 146/3708 10696/4862 55803/25366 = Dimensions are for a single unit. Overall dimensions are determined by installation. Dry unit without media Brine Pumping Skids LENGTH WIDTH HEIGHT WEIGHT I OPERATING PTI Series Softeners Page 11 Rev. 1, February 2009 S5131 -020 251-61 SIEMENS ORDERING INFORMATION MATRIX Vantage® PreTreatment - Industrial (PTI) Softener Sample Part Number: PTI Softener High Purity Solutions Standard Products DELUXE - (316L SS piping, PVC Internals, PLC /HMI) SELECT - (316L SS piping & internal dist, PLC HMI) DUPLEX TRIPLEX (Plus, Deluxe, and Select Only) ASME Section VIII Div 1 (Plus, Deluxe, and Select Only) 84" Dia X 84" Side Sheet 96" Dia X 96" Side Sheet 120" Dia X 120" Side Sheet OPTION KITS (Separate PO fine Items) Option Option Kit # I Description Hardness Monitor 24/S5134 -163 Hach SP -510 Option kit for Plus and Deluxe Trim Packages Pressure Differential Switch 24/S7102 -160 Ashcroft, Differential Pressure Switch with PVC isolation valves, 316ss process connections and diaphragm, ' /a" NPT PTI Series Softeners Page 12 Rev. 1, February 2009 S5131 -020 251-62 APPENDIX C Estimate of Probable Construction Costs Alternative 1 - Mixing Mixing at John Garthe Reservoir (Blending Only) Capital Costs Item 4uantity Lipit i Dr ttriptiorf Unit Cast , Total Cbst 1 LS Well 32 Rehabilitation $500,000 $500,000 Well 32 Reconstruction (Raise Well out of Vault and Construct $1,600,000 1 LS Building) $1,600,000 1 LS Construct 12" PVC Pipeline To Garthe Reservoir $1,000,000 $1,000,000 Subtotal: $3,100,000 Engineering, Legal, Administrative @ 20% Contingency @ 30% $620,000 $930,000 Total Capital Coss CITY OF SANTA ANA 251 -64 TETRA TECH, INC. Alternative 2 - Mixing Mixing at John Garthe Reservoir (Fill Reservoir) Capital Costs LS Well 32 Rehabilitation $500,000 $500,000 Well 32 Reconstruction (Raise Well out of Vault and Construct $1,400,000 LS Building) $1,400,000 LS Construct 16" PVC Pipeline To Garthe Reservoir $1,150,000 $1,150,000 Subtotal: $3,050,000 Engineering, Legal, Administrative @ 20°/ Contingency @ 30% $610,000 $920,000 ITOWCapltal Costs $4,580,00 CITY OF SANTA ANA 251 -65 TETRA TECH, INC. unit Total Item. Quantity!] ; Unit �eserPption' °` cost- cast LS Well 32 Rehabilitation $500,000 $500,000 Well 32 Reconstruction (Raise Well out of Vault and Construct $1,400,000 LS Building) $1,400,000 LS Construct 16" PVC Pipeline To Garthe Reservoir $1,150,000 $1,150,000 Subtotal: $3,050,000 Engineering, Legal, Administrative @ 20°/ Contingency @ 30% $610,000 $920,000 ITOWCapltal Costs $4,580,00 CITY OF SANTA ANA 251 -65 TETRA TECH, INC. Alternative 3 - Mixing Mixing at Memory Lane PRS Capital Costs 1 LS Well 32 Rehabilitation $500,000 $500,000 Well 32 Reconstruction (Raise Well out of Vault and Construct $1,500,000 $1,500,000 1 LS Building) 1 LS Construct 16" PVC Pipeline To Memory Lane PRS $670,000 $670,000 1 LS Construct Memory Lane PRS $460,000 $460,000 Subtotal: $3,130,000 Engineering, Legal, Administrative @ 200% $626,000 Contingency @ 30% $944,000 Total Capital Costs $4,700,0001 CITY OF SANTA ANA 251 -66 TETRA TECH, INC. Unit Total Item Quantity Unit Description .Cost Cost 1 LS Well 32 Rehabilitation $500,000 $500,000 Well 32 Reconstruction (Raise Well out of Vault and Construct $1,500,000 $1,500,000 1 LS Building) 1 LS Construct 16" PVC Pipeline To Memory Lane PRS $670,000 $670,000 1 LS Construct Memory Lane PRS $460,000 $460,000 Subtotal: $3,130,000 Engineering, Legal, Administrative @ 200% $626,000 Contingency @ 30% $944,000 Total Capital Costs $4,700,0001 CITY OF SANTA ANA 251 -66 TETRA TECH, INC. Alternative 4~Treatment Off-Site Regeneration Capital and Operating Costs 1 LS Treatment Plant (Qff-Site Generation) $E,700000 $5,700000 1 LS Well 3%Rehabilitation $500,000 $500.000 Well 32 Reconstruction (Raise Well out vf Vault and Cnnstrvcl 1 LS Building) $1,600,000 $1'800,000 Subtotal: $7,800,000 Engineering, Legal, Administrative @200% $1,560,000 Contingency @ 30% $2340,000 TvtwAnnva|()poraUn8Cnot(T,oatmontP|ant) 8,600,000 CITY OF SANTA ANA ��U�� ��U���K TETRA TECH, INC. m6r� Quantity] Unit cost 1 LS Treatment Plant (Qff-Site Generation) $E,700000 $5,700000 1 LS Well 3%Rehabilitation $500,000 $500.000 Well 32 Reconstruction (Raise Well out vf Vault and Cnnstrvcl 1 LS Building) $1,600,000 $1'800,000 Subtotal: $7,800,000 Engineering, Legal, Administrative @200% $1,560,000 Contingency @ 30% $2340,000 TvtwAnnva|()poraUn8Cnot(T,oatmontP|ant) 8,600,000 CITY OF SANTA ANA ��U�� ��U���K TETRA TECH, INC. Well 32 Reconstruction (300 hp) Capital Costs 1 LS Demolition of Old Well Vault $30,000 $30,000 Total.= IfeSn ', Civantity: unit Description Csist Cost 1 LS Demolition of Old Well Vault $30,000 $30,000 1 LS Extend Well Casing $60,000 $60,000 1 LS Construct CMU Well Building $610,000 $610,000 1 LS Construct Well and Well Head $200,000 $200,000 1 LS Construct Well Piping $120,000 $120,000 1 LS Site Improvements $100,000 $100,000 1 LS Sodium Hypchlorite System $40,000 $40,000 1 LS Electrical and Telementry $180,000 $180,000 1 LS Programming $20,000 $20,000 1 LS Landscaping $20,000 $20,000 1 LS Shoring and Safety $20,000 $20,000 Subtotal: $1,400,000 ITotall Capital Casts Total Annual Operating Cost CITY OF SANTA ANA 251 -68 TETRA TECH, INC. Well 32 Reconstruction (300 hp) Capital Costs Item ;Quantity # U�Sit �Qe$cription = Urit Totat 'Cost Extend Well Casing $60,000 $60,000 Coast Construct CMU Well Building 1 LS Demolition of Old Well Vault $30,000 $30,000 1 LS Extend Well Casing $60,000 $60,000 1 LS Construct CMU Well Building $610,000 $610,000 1 LS Construct Well and Well Head $200,000 $200,000 1 LS Construct Well Piping $150,000 $160,000 1 LS Surge Provisions $170,000 $170,000 1 LS Site Improvements $100,000 $100,000 1 LS Sodium Hypchlorite System $40,000 $40,000 1 LS Electrical and Telementry $180,000 $180,000 1 LS Programming $20,000 $20,000 1 LS Landscaping $20,000 $20,000 1 LS Shoring and Safety $20,000 $20,000 Subtotal: $1,600,000 Total Capital Costs $1,600,050 CITY OF SANTA ANA Total Annual Operating Cost 251 -69 TETRA TECH, INC. Well 32 Reconstruction (150 hp) Capital and Operating Costs lterrt Quantity: Uni# DesCin tloi�� Unit C- At Total 1 LS Demolition of Old Well Vault $30,000 $30,000 1 LS Extend Well Casing $60,000 $60,000 1 LS Construct CMU Well Building $610,000 $610,000 1 LS Construct Well and Well Head $180,000 $180,000 1 LS Construct Well Piping $150,000 $150,000 1 LS Site Improvements $100,000 $100,000 1 LS Sodium Hypchlorite System $40,000 $40,000 1 LS Electrical and Telementry $170,000 $170,000 1 LS Programming $20,000 $20,000 1 LS Landscaping $20,000 $20,000 1 LS Shoring and Safety $20,000 $20,000 Subtotal: $1,400,000 Total Capital Costs' 1,400 00 CITY OF SANTA ANA Total Annual Operating Cost 251 -70 TETRA TECH, INC. ENGINEER'S ESTIMATE OF PROBABLE CONSTRUCTION COSTS Project: Memory Lane PRS Client: City of Santa Ana Date: January 30, 2013 v "` a 'n.�e'h at 1 ' `1$,L .; F a . sue.- , -a's�F `=`., _- c.- ss'�bd!5�:..ti' 1 -i � yv dY[.+re +k3 �.xax c� IG 1 1 LS Mobiltzetion, Dcarobilintlon, and Clean -u' $15,000 $15,000 2 l LS Site Demolition and Grading $50,000 $50,000 3 t LS Site Improvements $37,800 $37,800 4 1 LS Piping and A urtenances $260000 $260,000 5 l LS Electrical, Telenra and Pro rourmi Im rovemant $80,000 $80,000 6 t LS Landscaping $10,000 $10,000 7 1 LS Famish and Install Soletv Measure: $5,000 $5,000 •Ifrt_. ♦3 frSL kfiFik �o�r` 3.uvl.. ri./'us a4 Y flTS �"5.:? �-. M _.. x" fiyyS S°�t ?. 1. i ua3 x 'F` F 1 if „t �'FF '�' S fS %'Y'<i.0 This .,t estimate is an eelimalc only. These fades m, supplied ns o6nac only. This E. is net msponsihle for fncllmtion in cast of mmerinl, labor, or mmponenla, or unforeseen comingencics. Alternative Cost Estimates 251 -71 Tetra Tech, Inc. City of Santa Ana Memory Lane PRS Preliminary Engineer's Estimate of Probable Construction Cost P: \P00597 \0086 \ProjectData \05 \Cost Estimate \Alternative Cost Estimates 251 -72 n X { 1 1 LS Mobilization, Demobilization, and Clesuk-up $15,000 $15,000 2 1 LS Site Demolition and Grading $50,000 $50,000 1 LS Assume 5 days at 4000 /day $50,000 $50,000 3 1 LS Site Improvements $37,800 $37,800 100 LF Construct Block Wall (Rawlings Res $600 /LF; this is less complex) $200 $20,000 120 SF Construct Concrete Driveway $40 $4,800 400 SF Concrete Pad $20 $8,000 1 LS Construct 12' wide gate $5,000 $5,000 4 1 LS Piping and Appurtenances $260,000 $260,000 1 EA , 6" Pressure Reducing Valve ($12, 000+ 50% installation, tax, marku and shipping) $18,000 $18,000 1 EA 10" Comb Pressure Reducing & Flow Control Valve ($15,000+ 50% $22,500 $22,500 1 EA 6" Butterfly Valve ($1,600 + 50%) $2,400 $2,400 1 EA 10" Butterfl y Valve $2,000 +50 %) $3,000 $3,000 1 EA 16" Butterfly Volvo $3,200 +50 % - Well 32 interconnection $4,800 $4,800 4 EA V AV $2,000 $8,000 20 LF 16" Steel Pie $400 $8,000 20 LF 10" Steel Pie $330 $6,600 20 LF 6" Steel pipe $270 $5,400 6 EA Pie Su orts $500 $3,000 1 EA 10" Flow Meter (mag meter $15,000 $15,000 I 1 EA 16" Flow Meter (ma meter) $8,000 $8,000 1 EA Static Mixer $25,000 $25,000 1 EA Sure Provisions $100,300 $100,300 1 EA Nitrate Residual Analyzer $15,000 $15,000 3 EA Connection to existing 16 piping $5,000 $15,000 5 1 LS Electrical, Telemetry and Programming Improvements $80,000 $80,000 6 1 LS Landscaping $10,000 $10,000 7 1 LS Furnish and Install Safety Measures $5,000 $5,000 - 3)157o.`Ql�'?".i4;*EN.. '€ P: \P00597 \0086 \ProjectData \05 \Cost Estimate \Alternative Cost Estimates 251 -72 Alternative 1 - Memory Lane Pipeline 16" Well 32 Transmission Line Construction Cost Estimate Items ; QUantity' Unit bescYjPtjon $496,000 � Total Cost Valves and Appurtenances (Assume 4% of Pipeline Cost) $20,000 $20,000 in.A, C SSt Connection at Well 32 3100 LF Construct 16" PVC Pipeline $160 $496,000 LS Valves and Appurtenances (Assume 4% of Pipeline Cost) $20,000 $20,000 1 EA Connection at Well 32 $5,000 $5,000 1 EA Connection at PRS (Memory Lane) $5,000 $5,000 41500 SF Pavement Slurry Seal (Half of Memory Lane) $0.50 $20,750 LS Prepare and Set -up Traffic Control $40,000 $40,000 LS Sheeting, Shoring and Bracing $10,000 $10,000 LS Mobilization, Demobilization, and Cleanup $60,000 $60,000 Subtotal: $656,750 Contingency (30 %): $198,000 Total: $854,750 CITY OF SANTA ANA 251 -73 TETRA TECH, INC. Alternative 2 - Garthe Reservoir Pipeline 16" Well 32 Transmission Line Construction Cost Estimate 3250 LF Construct 16" PVC Pipeline Unit Total Item Quantity 17 Unit Description Colt Cost 3250 LF Construct 16" PVC Pipeline $160 $520,000 200 LF Bore and Jack (30" steel casing) $1,500 $300,000 Valves and Appurtenances (Assume 4% of Pipeline $21,000 $21,000 LS Cost) 1 EA Connection at Well 32 $5,000 $5,000 1 EA Connection at Garthe $5,000 $5,000 38000 SF Pavement Slurry Seal (Half of Memory Lane) $0.50 $19,000 1 LS Prepare and Set -up Traffic Control $70,000 $70,000 LS Sheeting, Shoring and Bracing $10,000 $10,000 LS Mobilization, Demobilization, and Cleanup $60,000 $60,000 Subtotal: $1,010,000 Contingency (30 %): $303,000 Total: $1,313,000 Constructi*n Most Estimate $1,313,0 CITY OF SANTA ANA 251 -74 TETRA TECH, INC. Alternative 2 - Garthe Reservoir Pipeline 16" Well 32 Transmission Line Construction Cost Estimate Item , Quantity Unit Description, Unit Total - Cost Cos{ 3250 LF Construct 16" PVC Pipeline $200 $650,000 200 LF Bore and Jack (30" steel casing) $1,500 $300,000 Valves and Appurtenances (Assume 4% of Pipeline $26,000 $26,000 LS Cost) 1 EA Connection at Well 32 $5,000 $5,000 1 EA Connection at Garthe $5,000 $5,000 38000 SF Pavement Slurry Seal (Half of Memory Lane) $0.50 $19,000 1 LS Prepare and Set -up Traffic Control $70,000 $70,000 LS Sheeting, Shoring and Bracing $10,000 $10,000 LS Mobilization, Demobilization, and Cleanup $60,000 $60,000 Subtotal: $1,145,000 Contingency (30 %): $343,500 Total: $1,488,500 Construction Cost Estimate ; 1,489,000 CITY OF SANTA ANA 251 -75 TETRA TECH, INC. PVC /DI Pipe Cost Per Linear Foot Calculation PVC Pipe Cost Per Linear Foot Size /inches) 1 1 16 Installation $ 40 Provide cost data PVC $ 30 25% Additional - Restrained Joints $ - $ 4 $ - Pipe Zone (Sand) $ 2 $ 5 $ 2 Pavement Repair $ 53 $ 75 $ 53 Backfill with on -site soil $ 20 cy < -- -Enter Value Trucking (transportation) $ Installed Pipe Cost ($ /If) Option - Slurry Backfill $ 55 $ 154 $ 55 Slurry Backfill Add $ 29 $ 57.28 $ 29 Installed Pipe Cost ($ /If) Option - Imported Backfill $ 84 $ 211 $ 84 Imported Backfill Add $ 11 $ 22 $ 11 Installed Pipe Cost ($ /If) $ 66 $ 176 $ 66 Enter the following data < -- -Enter Pipe Sizes < -- -Enter Installation Cost from PVC -DI Equipment and Manpower Spreadsheet <.. -Enter Pipe Cost Avg depth to top of pipeline 5 feet < ... Enter Value Provide cost data % of Pipe Length - Restrained 25% < ... Enter Value Sand $ 16 ton <-- -Enter Value Pavement $ 16 sf <-- -Enter Value Slurry $ 125 cy <-- -Enter Value Imported Backfill $ 20 cy <-- -Enter Value Haul Off (loading, disposal fee) $ 20 cy < -- -Enter Value Trucking (transportation) $ 15 cy < -- -Enter Value Assumptions: Pipe zone equals 4- inches of bedding below the pipe, 8- inches on either side of the pipe and 12- inches above the F Trench width equals pipe diameter plus 8- inches either side Pavement Repair is trench width plus 24 -inchs (t -cut repair, 12- inches on each side of the trench) Pavement Structural Section 12 "AC Restrained pipe is assumed to be about 1.5 times more than straight pipe. Installed price does not include pipe appurtenances (valves, air /vacs, blow -offs, etc) Material price needs to include Contractor mark -up for profit as well as shipping and tax 251 -76 >ipe PVC /DI Pipe Cost Per Linear Foot Calculation 251 -77 thiCifil EpFpsi OF PROBAPPI EQUIPMENT, PVOIDI PIP. is i)etl: Iwo Pipu Phil romiunl Tera':'ipeimr: "I,;"...neolo'.1Plnlnllrn JUnlrlorror PVC, PIP. IOaIrrllnllon wLh LUJ rmrF'aeolL losaieft.p,e Lne40V Epllf IPM left 2B %—Enter Value zy.-1 a. Ill n,m u. m .ml.c'. L Pill wuTill ,nJrcgnirem auu. c,Ilm r. m.b BengrY Fly, wmy grW �nanr LP HR I 5150 1 I "Ill $it I Fdp,,1LanJn Cleary IIF 1 170 1 1 1p $16 Lnl HR c$aR �:: ?'9 i n A buck � IIR Aanrnw TYlrlyul Paotlw'IIrm RUUIWanJ wll eI NROMrr'J COnrlillona 900 XItlaY a mee Pln. S A SJO Uh1n1nck IIR 1 Pem,Il.aro mh m, rvrrnlna,.n9a 1 ai Illy Ilrrrls eu,r meanly y,omng. ae„mP, Napran old, mnrvpowae thi 0111 -fil m,Inrvmanla 111. Frl.c l r.11alol S7F'rnM4` <.Tl; U :.ii�' 1 1 n' }"31Yj• IIii': 1 Purv'man in Hit SIOp 5 l O:vanrs Sly 11J0 SI J Trvokun S'10 l a LAmma ssp n Oovrhafwyvr FUlxuan m S Nm 5x6 Deterlmine mmkel contlltions to eslimale profit'. left 2B %—Enter Value zy.-1 a. Ill n,m u. m .ml.c'. L Pill wuTill ,nJrcgnirem auu. c,Ilm r. m.b BengrY Fly, wmy grW �nanr LP 15 fly $it $it plcmx'+a R End- an .. VnPrale paMt.b..... le Ma lreluw sCC11 $^'I $19 $16 .1�LF FE ti Y'i'54 BiiU Idl c$aR �:: ?'9 i n A r' 3 Deterlmine mmkel contlltions to eslimale profit'. left 2B %—Enter Value zy.-1 a. Ill n,m u. m .ml.c'. L Pill wuTill ,nJrcgnirem auu. c,Ilm r. m.b BengrY Fly, wmy Mmk.t Me to nv neck bg . a.vornl maaorel 2 V -11 r Praionaroml s1lP1 ofil lPl "— rok I'll vi Inevaml li J lrn) Plot v.11 .oh i very 6uvy, ravr bl'Ol plcmx'+a R End- an .. VnPrale paMt.b..... le Ma lreluw 9Mwll hrgM1 rrsN pr.l..l ¢596 oPRm:z I) 1 rJ'niscoo mn emamrwm mr nrratla,rvn oe Lrve ,,, AMUaoe Pit gear, We.nx. eJNrrrwr W,ullnw early, Fell for, Ilh'IT'.FdF OP PIPE'PA Poll! LF 711 . y1j -,l UUx, rates from Table 2 below Egeipmynl L] SIA SIS Clan po:wr LF SI6 ER9 tll S19 Oelerlmine mai conditions Io estlmeb profit I,yff 20 %a —Enter Value .19 fro .n nemS rmme lilfill pwaawrv) Cali ml(Iwb w re een l,e,.ey,wl Pal lab Mete plot (Homo book Is, her:mvml fall Jno([am, neck logo very W.y bw finds') "— Enter cciclJnfetl protludlon 'at.. from Table 3 below 6. L Pill wuTill ,nJrcgnirem auu. 2 V -11 r Praionaroml s1lP1 plcmx'+a R End- an .. VnPrale paMt.b..... le Ma lreluw 1'ahlel Onfor nlon rose Per 61eP 1'. Aanrnw TYlrlyul Paotlw'IIrm RUUIWanJ wll eI NROMrr'J COnrlillona 900 XItlaY a mee Pln. al„1em..yr Pem,Il.aro mh m, rvrrnlna,.n9a ai Illy Ilrrrls eu,r meanly y,omng. ae„mP, Napran old, thi 0111 -fil m,Inrvmanla 111. Frl.c l r.11alol leas r.0 x'ilhin,call bfirinal lnLLCagi,ee my, I: fil,rntlm,e,e- re.oins mr,l nlll -le"lY mynl Pronenlenr'nd n'nam riesil m PrvJ..nrrrr Oe0 lbol COwlobo.111FelaYarvinlll: Oovrhafwyvr FUlxuan m S Nm 5x6 11—lender Where Applicable tm proem b .oleo a Ill. la tan lend O.0 Sri y"'meae an.mn 9,.c numm. (rrlv.ry tole apMyl ,army Ornaaeen+ IN Sa Pcer' mJ UI: x•5 oa.are rml,e'rrer P. re,J a +Sw.nu mrg are m. ".n,i learP. "ira ."I sw cvnmmianal al "It'O tomato 10% J'ifib Rnmlem)mw Ill lac nwlp'aw+myr cmryeW Phil—wmnl araMny Su cr.ermnmm rta 2K .1— omxwrmPX Bawalerleem:pen+l m% liam 1.11h.O11.ninR)'. it'lrre 6pwle19nvmmm mn I'a.b,x) aylol slmmre t +hu, ki lsad ym cerrmenme A lalmlmrloods amrein.. mini- -....) l0•H c.ve fiF- oll —lPwatl wmw, Infil l Tta"llftrcMAxROyllon In Prvbrerbe LI'e se", Ina � allr. ynnnlnrnY ltlumif ml 30Y. .s"r Pip, lneelleROn Nd ien RC1, 1LF /Iii 250 flld, Ilrrs mn mmymae aepay l le choso the. rn yeamak.nly. '1 reppearl 111 aral'Illy Inm pn1 a-1 1m Plmm mr unmemrrl a I'll of 1—t hi l.na 11 aal ���n��w.. m'nem.ny,e.mrn"Ps- 251 -78 =n uwu svnmonpnumecaer minm�nBSU.erliubr.melevR„rmnn c.rl.rmm�lry Appendix C Well 32 Nitrate Removal Plant (Off -Site Regeneration) Capital Costs Dean, Qnantlty 'Unit Cost Total Site Miscellaneous Site Work 1 12,000 LS 12,000 Yard Piping 1 15,000 LS 15,000 Equipment IX Filters, Piping and Valves 1 4,725,000 E A 4,725,000 Backwash Pumps 2 12,000 E A 24,000 E Booster Pumping 1 20,000 A 20,000 Structural Backwash Tank - 60,000 gal 1 90,000 LS 90,000 Miscellaneous Structural Concrete and Steel 1 30,000 LS 30,000 Canopy 1 40,000 LS 40,000 Electrical 1 50,000 LS 50,000 Instrumentation and Controls 1 25,000 LS 25,000 Painting and Coatings 1 12,000 LS 12,000 Mobilization and Demobilization 1 25,000 LS 25,000 Subtotal $5,068,000 Insurance and Bonds @ 2% $101,400 Contractor's Overhead and Profit @ 10% $506,800 Subtotal Construction Cost $5,676,200 Engineering, Legal, Administrative @ 20% $1,135,200 Contingency @ 20% $1,135,200 Total Capital Cost $7,946,600 251 -79 Appendix C Well 32 Nitrate Removal Plant (Off -Site Regeneration) Annual Operation and Maintenance Costs Item Quantity unit Cost Total Treatment Plant Power Treatment Plant and Booster Pumping Labor (12 hrs /week) Miscellaneous Materials fX Media Replacement Total Annual O &M Cost 400,000 0.120 $ /kwh 48,000 624 100 $ /HR 62,400 1 15,000 LS 15,000 1 7,900,000 LS 7,900,000 Table 3 -5 Well 32 Nitrate Removal Plant (Off -Site Regeneration) Unit Costs $8,025,400 Description Annual Costs Plant Capacity (GPM) 2,500 Plant Factor 0.950 Annual Water Production (AF /YR) 3,800 Amortized Capital Cost ($ /YR) (') $487,800 Total Annual O &M Cost ($ /YR) $8,025,400 Total Annual Cost ($ /YR) $8,513,200 Unit Capital Cost ($ /AF) $128 Unit O &M Cost ($ /AF) $2,112 Total Unit Cost ($ /AF) $2,240 (') Amortized Capital based on 4.5% interest for 30 years CFR= 0.061391 251 -80