PC 2005-56 - Laserfiche WebLink

Urban Stormwater Design Requirements 78. The project shall comply with the Alameda Countywide NPDES Permit #CA5002983 I _, a copy of which is av ai table at the City offices. 79. The following requirements shall be incorporated into the project- a. The project developer shall submit a final grading and drainage place prepared by a licensed civil engineer depicting all final grades and on-site drainage control measures including bio-s wales. Irrigated bio-swales shall be redesigned as needed to the satisfaction of the CJity Engineer to optimize the amount of the storm water running off~the paved surface that enters the bio-swale at its most upstream end. "Phis plan shall be subject to the review and approval of the City Engineer prior to the issuance of any building permits. h. The project developer shall submit sizing designs criteria to treat stormwater runoff- at the time of plan submittal _ Landscaping shall be designed to minimize irrigation and runoff promote surface infiltration where appropriate, and minimize the use of fertilizers and pesticides that can contribute to stormwater pollution. Structures shall be designed to discourage the occurrence and entry of pests into buildings, thus minin~aizing the need For pesticides. Where feasible, landscaping shall be designed and operated to treat storn-awater runoff. In areas that provide detention of water, plants that are tolerant of saturated soil conditions and prolonged exposure to water shall be sped feed. Soil shall be amended as required_ Pla~zt materials selected shall be appropriate to site speciSc characteristics such as soil type, topography, climate, arraount and timing of sunlight, prevailing winds, rainfall, air movcaraent, patterns of land use, ecological consistency grad plant interactions to ensure successful establishanent_ Landscaping shall also comply with City of Pleasanton ordinances and policies regarding water conservation. d. Trash areas, dunipsters and recycling containers shall be enclosed -and roofed to prevent water run-on to the area and runoff from the area and to contain litter and trash, so that it is not dispersed by the wind or runoff during waste removal. These areas shall not drain to the storm drain system, but to the sanitary sewer system and an area drain shall be installed in the enclosure area, providing a structural control such as an oil/water separator or sand filter. No other area shall drain into the trash enclosures a berm shall be installed to prevent such drainage if Found necessary by the City Engineer/Chief Building Oftici al. A sign shall be posted prohibiting the dumping of hazardous n~aateri als into the sanitary sewer_ The project developer shall notify the Dublin-San Ramon Services District 12