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16 ATTACHMENTS
City of Pleasanton
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CITY CLERK
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AGENDA PACKETS
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2007
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030607
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16 ATTACHMENTS
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6/1/2007 8:45:53 AM
Creation date
2/28/2007 4:30:56 PM
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CITY CLERK
CITY CLERK - TYPE
STAFF REPORTS
DOCUMENT DATE
3/6/2007
DESTRUCT DATE
15 Y
DOCUMENT NO
16 Attachments
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URBAN STORMWATER RUNOFF REQUIREMENTS <br />91. Stormwater Design Requirements <br />The project shall comply with the Alameda Countywide NPDES Permit <br />#CA50029831, a copy of which is available at the City offices. <br />The following requirements shall be incorporated into the project: <br />a. The project developer shall submit a final grading and drainage plan prepared by <br />a licensed civil engineer depicting all final grades and on site drainage control <br />measures including bio-swales. Irrigated bio-swales shall be redesigned as <br />needed to the satisfaction of the City Engineer to optimize the amount of the <br />storm water running off the paved surface that enters the bio-swale at its most <br />upstream end. This plan shall be subject to the review and approval of the City <br />Engineer prior to the issuance of any building permits. <br />b. The project developer shall submit sizing designs criteria to treat stormwater <br />runoff at the time of plan submittal. <br />c. Landscaping shall be designed to minimize irrigation and runoff, promote surface <br />infiltration where appropriate, and minimize the use of fertilizers and pesticides <br />that can contribute to stormwater pollution. <br />i. Structures shall be designed to discourage the occurrence and entry of pests <br />into 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. <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. Prior to grading permit issuance the project developer shall submit a copy of the <br />State Water Resources Control Board Notice of Intent (NOI) for coverage under <br />the State Construction Storm Water General Permit for projects with clearing, <br />grading and excavation exceeding the current standards. <br />e. Roof drains shall discharge and drain away from the building foundation to an <br />unpaved area wherever practicable. <br />In addition to the Standard Urban Stormwater Runoff Requirements for <br />compliance with Alameda County NPDES Permit #CA500229831 the project <br />19 <br />
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