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The project shall also comply with the "Construction General Permit" by the <br /> California Regional Water Quality Control Board, San Francisco Bay Region: <br /> (http: / /www.waterboards.ca.gov /water issues /proqrams /stormwater /construction. <br /> shtml) <br /> Design Requirements <br /> 122. The Permit design requirements include, but are not limited to, the following: <br /> a) Source control, sight design measures, and design and implementation of <br /> stormwater treatment measures are required when commercial, industrial, <br /> or residential development creates and replaces 10,000 square feet or more <br /> of impervious surface, including roof area, streets, and sidewalk. <br /> b) Hydro- modification standards are required when a new development or <br /> redevelopment project creates and replaces total impervious area of one <br /> acre or more. <br /> c) The Permit requires a proactive Diazinon pollutant reduction plan (aka <br /> Pesticide Plan) to reduce or substitute pesticide use with less toxic <br /> alternatives. <br /> d) The Permit requires complying with the Copper Pollutant Reduction Plan <br /> and the Mercury Pollutant Reduction Plan. <br /> 123. The following requirements shall be incorporated into the project: <br /> a) The project applicant or developer shall submit a final grading and drainage <br /> plan prepared by a licensed civil engineer depicting all final grades and on- <br /> site drainage control measures including bio - swales. Irrigated bio - swales <br /> shall be redesigned as needed to the satisfaction of the City Engineer to <br /> optimize the amount of the stormwater running off the paved surface that <br /> enters the bio -swale at its most upstream end. This plan shall be subject to <br /> the review and approval of the City Engineer prior to the issuance of any <br /> building permits. <br /> b) In addition to natural controls, the project applicant or developer shall install <br /> a structural control such as an oil /water separator, sand filter, or an <br /> approved equal in the parking lot to intercept and pre -treat stormwater prior <br /> to reaching the storm drain. The design, locations, and a schedule for <br /> maintaining the separator shall be submitted to the City Engineer /Chief <br /> Building Official for review and approval prior to issuance of building <br /> permits. The structural control shall be cleaned at least twice a year: once <br /> immediately prior to October 15 and once in January. <br /> 20 <br />