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residential development creates and replaces 10,000 square feet or more of <br /> 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 acre or <br /> more. <br /> c. The NPDES Permit requires a proactive Diazinon pollutant reduction plan (aka <br /> Pesticide Plan) to reduce or substitute pesticide use with less toxic alternatives. <br /> d. The NPDES Permit requires complying with the Copper Pollutant Reduction Plan <br /> and the Mercury Pollutant Reduction Plan. <br /> 2. The following requirements shall be incorporated into the project: <br /> a. The project developer shall submit a final grading and drainage plan prepared by a <br /> licensed civil engineer depicting all final grades and on-site drainage control <br /> measures including bio-swales. Irrigated bio-swales shall be redesigned as needed <br /> to the satisfaction of the City Engineer to optimize the amount of the stormwater <br /> running off the paved surface that enters the bio-swale at its most upstream end. <br /> This plan shall be subject to the review and approval of the City Engineer prior to the <br /> issuance of any building permits. <br /> b. The project developer shall submit sizing design criteria to treat stormwater runoff <br /> and for hydromodification, if required, at the time of PUD plan submittal and an <br /> updated detailed copy of calculations with subsequent submittals. <br /> c. Landscaping shall be designed to minimize irrigation and runoff, promote surface <br /> infiltration where appropriate and acceptable to the project soils engineer, and <br /> minimize the use of fertilizers and pesticides that can contribute to stormwater <br /> pollution. <br /> I. Structures shall be designed to prohibit the occurrence and entry of pests into <br /> buildings, thus minimizing the need for pesticides. <br /> II. Where feasible, landscaping shall be designed and operated to treat <br /> stormwater runoff. In areas that provide detention of water, plants that are <br /> tolerant of saturated soil conditions and prolonged exposure to water shall be <br /> specified. Soil shall be amended as required. (See planting guide line by <br /> Alameda County Clean Water Program.) <br /> III. Plant materials selected shall be appropriate to site specific characteristics <br /> such as soil type, topography, climate, amount and timing of sunlight, <br /> prevailing winds, rainfall, air movement, patterns of land use, ecological <br /> consistency and plant interactions to ensure successful establishment. <br /> IV. Landscaping shall also comply with City of Pleasanton ordinances and <br /> policies regarding water conservation. <br /> d. Trash areas, dumpsters and recycling containers shall be enclosed and roofed to <br /> prevent water run-on to the area and runoff from the area and to contain litter and <br /> trash, so that it is not dispersed by the wind or runoff during waste removal. These <br /> areas shall not drain to the storm drain system, but to the sanitary sewer system and <br /> an area drain shall be installed in the enclosure area, providing a structural control <br /> such as an oil/water separator or sand filter. No other area shall drain into the trash <br /> PUD-125, 2350 Santa Rita Road Planning Commission <br /> Page 17 of 21 <br />25, 2350 Santa Rita Road Planning Commission <br /> Page 15 of 21 <br />g Commission <br /> Page 3 of 21 <br />