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ii. During maintenance, the following applies during washing and patination: 1. Minimize washing of architectural copper as it damages the patina and any protective coating. 2. Block all storm drain inlets downstream of the wash. 3. Collect in a tank and dispose off-site, or discharge the wash water to the sanitary sewer (with prior authorization from DSRSD). h. During re-patination, collect the rinse water in a tank and dispose off-site or discharge to sewer (with prior authorization from DSRSD). i. Roof drains shall drain away from the building foundation. Stormwater flow shall drain to a landscaped area or to an unpaved area whe-ever practicable as determined by the City Engineer/Chief Building Official. Construction Requirements 148. 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 .3t: • http://www.waterboards.ca.qov/water issues/programs/storm Nater/constructi on.html • http://www.waterboards.ca.gov/water issues/programs/stormwater/docs/final constpermit.pdf a. The Construction General Permit's requirements include, but are not limited to, the following: i. 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. ii. 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 13-Unit)Development Plan Ponderosa Homes PUD-97, Conditions of Approval 29 of 32 42C2 Stanley Boulevard