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pursuant to subdivision (c) of Section 7050.5 of the Health and Safety Code, and all excavation and site preparation activities shall cease within a 50-foot radius of the find until appropriate arrangements are made. If the agencies determine that avoidance is not feasible, then an alternative plan shall be prepared with specific steps and timeframe required to resume construction activities. Monitoring, data recovery, determination of significance and avoidance measures (if applicable) shall be completed expeditiously. h. G1. Follow all recommendations in the Geotechnical Investigation for Kottinger Residential Development, 240 &251 Kottinger Drive, 4138 Vineyard Avenue, Pleasanton, California prepared by AMSO Consulting Engineers and dated March 8, 2013 and found in Appendix D of the Mitigated Negative Declaration for the project. HZ1. Prior to the demolition of the existing structures on site, the amount and extent of any Asbestos-Containing Building Materials (ACBMs) and/or lead-based paint (LBP) should be ascertained and all hazardous materials found to be present should be properly handled, removed, recycled, and/or disposed of by properly certified contractors using approved methods in accordance with all applicable federal, state, and local regulations. j. H1. The project will be required to implement.Hydrograph Modification Management (HM). With HM, the project therefore must include in the design of its storm drainage system detention measures, using the Bay Area Hydrologic Model (BAHM) program that must be sized to control the flow and duration of the storm water runoff. k. H2. During project review, the applicant must prepare a maintenance plan and enter into an operation and maintenance agreement with the municipality to identify and record the party responsible for long-term maintenance of HM controls and stormwater treatment measures. I. WQ1. It is the responsibility of the applicant to comply with Federal, State, and local water quality standards and regulations. In order for the County and the applicant to comply with the Alameda Countywide Clean Water Program's (ACCWP) National Pollutant Discharge Elimination System (NPDES) Municipal Storm Water Permit issued by the San Francisco Bay Regional Water Quality Control Board, water quality protection must be implemented both during construction and after construction. Permanent measures to protect water quality will reduce pollution that is commonly produced from the creation of new impervious surfaces such as roads and rooftops. The applicant shall provide measures to prevent discharge of contaminated materials into public drainage facilities both during construction and post-construction periods. The primary references for providing stormwater treatment are "ACCWP C.3 Stormwater Handbook" and the "California Best Management Practices (BMP) Handbook for New Development and Redevelopment, 2003". m. WQ2. Projects with disturbances greater than one acre must file a Notice of Intent (NOI) with the State Water Resources Control Board (SWRCB) per the regulations of the General Construction Activities NPDES permit.. The SWRCB will require the preparation of a Storm Water Pollution Prevention Plan (SWPPP). The NOI and the SWPPP must be submitted prior to issuance of a grading permit and prior to any land disturbance of on the site. The SWPPP will include specifications for best management practices (BMPs) that will be implemented during project construction to minimize the potential for accidental releases or contamination, and to minimize PUD-101 (Kottinger Gardens) City Council 2 of 22