Item 4: PH - Ordinance on Stormwater Development Standards

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storm as a result of the development that is the subject of the application; (b) For purposes of designing the system as required by the standards in this section, the amount of impervious surface per lot is assumed to be the maximum lot coverage allowed for the use in the zone in which it is located, unless the applicant demonstrates otherwise. (c) All facilities to control the rate of stormwater runoff shall be sited, designed and constructed according to the flow control provisions and the facility design requirements set forth in the Stormwater Management Manual. Flow control facilities must be designed using one of the methodologies outlined in the Stormwater Management Manual. (d) The standards in EC 9.6793(3) may be adjusted pursuant to EC 9.8030(24). 9.6794 Stormwater Oil Control. (1) Purpose. The purpose of EC 9.6794 is to protect the city’s stormwater system from oil and grease from stormwater runoff of impervious surface areas on properties that produce high concentrations of these pollutants. (2)Applicability. Oil control standards set forth in EC 9.6794(3) apply to: (a) All new commercial and industrial development with parking lots that store wrecked or impounded vehicles; or (b) Any development that would result in an expected daily traffic count greater than one hundred vehicles per 1,000 square feet of gross building area, based on the most recent version of The Institute of Transportation Engineers’ Trip Generation Manual; or (c) Any development that would result in 100 or more off-street parking spaces; or (d) Any commercial or industrial development that receives an adjustment approving the installation of 125 percent or more of the minimum off-street parking spaces required by EC 9.6410(3), Minimum Number of Required Off-Street Parking Spaces and that adjustment will result in, at least, a total of 10 parking spaces. (3)Standards. Unless adjusted pursuant to EC 9.8030(24), all oil control facilities shall be sited, designed and constructed according to the oil control provisions and the facility design requirements set forth in the Stormwater Management Manual. Ordinance - 9 L:\CMO\2006 Council Agendas\M060410\S0604104-attA.doc 4/3/06 - Ordinance includes changes made pursuant to the 1/9/06, 1/10/06 and 2/13/06 PC meetings and the 3/13/06 City Council Work Session.