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<br />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 />115. The following requirements shall be incorporated into the project: <br /> <br />a. The project developer shall submit a final grading and drainage plan prepared <br />by a licensed civil engineer depicting all final grades and on-site drainage <br />control measures to the satisfaction of the City Engineer <br /> <br />b. In addition to natural controls the project developer may be required to install a <br />structural control, such as an oil/water separator, sand filter, or approved equal <br />(in the parking lot) (on the site) to intercept and pretreat storm water prior to <br />reaching the storm drain. The design, locations, and a schedule for <br />maintaining the separator shall be submitted to the City EngineerlDirector of <br />Building Inspection for review and approval prior to issuance of building <br />permits. The structural control shall be cleaned at least twice a year: once <br />immediately prior to October 15 and once in January. <br /> <br />c. The project developer shall submit sizing designs criteria to treat stormwater <br />runoff at the time of plan submittal. <br /> <br />d. 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 />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 <br />are tolerant of saturated soil conditions and prolonged exposure to <br />water shall be specified. Soil shall be amended as required. <br />3) Plant materials selected shall be appropriate to site specific <br />characteristics such as soil type, topography, climate, amount and <br />timing of sunlight, prevailing winds, rainfall, air movement, patterns <br />of land use, ecological consistency and plant interactions to ensure <br />successful establishment. <br />4) Landscaping shall also comply with City of Pleasanton ordinances and <br />policies regarding water conservation. <br /> <br />19 <br />