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dumping of hazardous materials into the sanitary sewer. The project <br /> developer shall notify the Dublin San Ramon Services District of the <br /> sanitary sewer connection and provide written verification of such <br /> notification to the City Engineer/Chief Building Official prior to the <br /> installation of the connection. <br /> g. All paved outdoor storage areas shall be designed to minimize pollutant <br /> runoff. Bulk materials stored outdoors that may contribute to the pollution <br /> of stormwater runoff must be covered as deemed appropriate by the City <br /> Engineer/Chief Building. <br /> h. All metal roofs, gutters, and downspouts shall be finished with rust- <br /> inhibitive finish/paint as determined by the Chief Building Official. <br /> i. All projects using architectural copper roofing, gutters, downspouts, etc., <br /> shall utilize the following Best Management Practices for the use and <br /> maintenance: <br /> a. During installation, copper material shall be pre-patinated at the factory, <br /> if available. If patination is done on-site, collect the rinse water in a tank <br /> and haul off-site for disposal. With prior authorization from Dublin San <br /> Ramon Services District (DSRSD), the rinse water may be collected in a <br /> tank and discharged to the sanitary sewer. Consider coating the copper <br /> materials with a clear coating that prevents further corrosion and <br /> stormwater pollution. The clear coating, if utilized, shall be reapplied (as <br /> recommended by the coating manufacturer) to maintain its efficacy. <br /> b. During maintenance (e.g., washing or re-patination), the following <br /> applies: <br /> i. Minimize washing of architectural copper as it damages the <br /> patina and any protective coating. <br /> ii. Block storm drain inlets as needed to prevent runoff from <br /> entering storm drains. <br /> iii. Collect the wash or rinse water in a tank and dispose off-site or <br /> (with prior authorization from DSRSD), discharge the wash or rinse <br /> water to the sanitary sewer. <br /> j. Roof drains shall drain away from the building foundation. Ten percent of <br /> the stormwater flow shall drain to a landscaped area or to an unpaved <br /> area wherever practicable as determined by the City Engineer/Chief <br /> Building Official. <br /> 140. The developer or applicant shall install trash capture devices within the project's <br /> storm drain inlets or storm drain piping to capture trash within the development. <br /> These devices shall trap particles of 5mm or greater and have treatment capacity <br /> not less than the peak storm from a "one year, one hour" event within the drainage <br /> area. The developer's or applicant's engineer shall submit calculations and product <br />