Appendix D Fairview St Bridge MMRP

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M ITIGATION M ONITORING A ND R EPORTING P ROGRAM A PRIL 2020 F AIRVIEW B RIDGE R EPLACEMENT AND S TREET I MPROVEMENTS (9TH S TREET TO 16TH S TREET) P ROJECT C ITY OF S ANTA A NA, C ALIFORNIA R:\WKE1702\ISMND\Public Review Draft ISMND\Appendix D Fairview St Bridge MMRP.docx (04/02/20) 9 Table A.1: Mitigation Monitoring and Reporting Program Mitigation Measures Responsible Party Timing for Mitigation Measure Completion Date 3.10 HYDROLOGY AND WATER QUALITY Mitigation Measure HYDRO-1: Construction General Permit. Prior to commencement of construction activities, the City of Santa Ana (City) Public Works Director or designee shall obtain coverage under the National Pollutant Discharge Elimination System (NPDES) General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities (Construction General Permit) NPDES No. CAS000002, Order No. 2009-0009-DWQ, as amended by Order No. 2010-0014-DWQ and Order No. 2012- 0006-DWQ, or any other subsequent permit. This shall include submission of Permit Registration Documents (PRDs), including permit application fees, a Notice of Intent (NOI), and other compliance- related documents required by the permit, to the State Water Resources Control Board via the Storm Water Multiple Application and Report Tracking System (SMARTS). Construction activities shall not commence until a Waste Discharge Identification Number (WDID) is obtained for the Project from SMARTS. Project construction shall comply with all applicable requirements specified in the Construction General Permit, including, but not limited to, preparation of a Storm Water Pollution Prevention Plan (SWPPP) and implementation of construction site best management practices (BMPs) to address all construction-related activities, equipment, and materials that have the potential to impact water quality for the appropriate risk level identified for the Project. The SWPPP shall identify the sources of pollutants that may affect the quality of storm water and shall include BMPs, such as Sediment Control, Erosion Control, and Good Housekeeping BMPs, to control the pollutants in storm water runoff. Construction Site BMPs shall also confirm to the requirements specified in the latest edition of the Orange County Stormwater Program Construction Runoff Guidance Manual for Contractors, Project Owners, and Developers to control and minimize the impacts of construction and construction-related activities, materials, and pollutants on the watershed. Upon completion of construction activities and stabilization of the site, a Notice of Termination (NOT) shall be submitted via SMARTS. City of Santa Ana Public Works Director or designee Prior to construction Mitigation Measure HYDRO-2: Groundwater Dewatering Permit. If groundwater dewatering is required during construction, the City Public Works Director or designee shall ensure that the Construction Contractor obtains coverage under the General Waste Discharge Requirements for Discharges to Surface Waters that Pose an Insignificant (De Minimus) Threat to Water Quality (Order No. R8-2009-0003, NPDES No. CAG998001), or any subsequent permit. This shall include submission of a Notice of Intent (NOI) for coverage under the permit to the Santa Ana Regional Water Quality Control Board (RWQCB) at least 45 days prior to the start of dewatering. Groundwater dewatering activities shall comply with all applicable provisions in the permit, including water sampling, analysis, treatment (if required), and reporting of dewatering-related discharges. Upon completion of groundwater dewatering activities, an NOT shall be submitted to the Santa Ana RWQCB. City of Santa Ana Public Works Director or designee/ Construction Contractor During construction