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i. Minimize washing of architectural copper as it damages the patina and any protective coating. H. Block storm drain inlets as needed to prevent runoff from entering storm drains. Hi. Collect the wash or rinse water in a tank and dispose off-site or (with prior authorization from DSRSD), discharge the wash or rinse water to the sanitary sewer. j. Roof drains shall drain away from the building foundation. Ten percent of the stormwater flow shall drain to a landscaped area or to an unpaved area wherever practicable as determined by the City Engineer/Chief Building Official. 168. The developer or applicant shall install trash capture devices within the project's storm drain inlets or storm drain piping to capture trash within the development. These devices shall trap particles of 5mm or greater and have treatment capacity not less than the peak storm from a "one year, one hour" event within the drainage area. The developer's or applicant's engineer shall submit calculations and product submittals to the City Engineer for review and approval prior to the issuance of a grading or building permit, whichever is sooner. Construction Requirements The project shall comply with the "Construction General Permit" requirements of the NPDES Permit for construction activities (including other land disturbing activities) that disturb one acre or more (including smaller sites that are part of a larger common plan of development). Information related to the Construction General Permit is on line at: • http://www.waterboards.ca.gov/water issues/proqrams/stormwater/construction.shtml • http://www.waterboards.ca.gov/water issues/proqrams/stormwater/dots/finalconstper m it.pdf 169. The Construction General Permit's requirements include, but are rot limited to, the following: a. The project developer shall obtain a construction general permit (NOI) from the Regional Water Quality Control Board to discharge stormwater, and to develop and implement stormwater pollution prevention plans. b. The project developer shall submit a Stormwater Pollution Prevention Plan (SWPPP) to the City Engineer/Chief Building Official for review and approval prior to the issuance of a grading or building permit, whichever is sooner. A copy of the approved SWPPP, including all approved amendments, shall be available at the project site for City, review until all engineering and building work is complete and City permits have been finaled. A site specific SWPPP must be combined with proper and timely installation of the BMPs, thorough and frequent inspections, maintenance, and documentations. SWPPP for projects shall be kept up to date with the projects' progress. Failure to comply with the most updated construction SWPPP may result in the issuance of correction notices, citations, and/ or stop work orders. 27 of 30