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Urban Stormwater Runoff Requirements: <br /> <br />71. Stormwater Design Requirements <br /> <br /> The project shall comply with the Alameda Countywide NPDES Permit <br />#CA50029831, a copy of which is available at the City offices. <br /> <br /> The following requirements shall be incorporated into the project and shall be <br />consistent with the recommendations of the geotechnical reports per Exhibit A: <br /> <br />a) The project developer shall submit sizing designs criteria to treat stormwater <br />runoff at the time of plan submittal subject to review and approval by the City <br />Engineer. <br /> <br />b) Landscaping shall be designed to minimize irrigation and runoff, promote <br />surface infiltration where appropriate, and minimize the use of fertilizers and <br />pesticides that can contribute to stormwater pollution. <br /> <br />1) Structures shall be designed to discourage the occurrence and entry of <br />pests into buildings, thus minimizing the need for pesticides. <br />2) 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 <br />be specified. Soil shall be amended as required. <br />3) 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 />4) Landscaping shall also comply with City of Pleasanton ordinances and <br />policies regarding water conservation. <br /> <br />c) Prior to grading permit issuance the project developer shall submit a copy of <br />the State Water Resources Control Board Notice of Intent (NOI) for coverage <br />under the State Construction Storm Water General Permit for projects with <br />clearing, grading and excavation exceeding the current standards. <br /> <br />d) Roof drains shall discharge and drain away from the building foundation to an <br />unpaved area wherever practicable subject to review and approval by the City <br />Engineer. <br /> <br /> 11 <br /> <br />