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08/09/2004 E. The City of Redwood City, in order to meet the provisions contained in Division 7 of the California Water Code and regulations adopted thereunder and the provisions of the Clean Water Act as amended and regulations and guidelines adopted thereunder, shall comply with the San Francisco Bay Regional Water Quality Control Board's (RWCQB) Provision C.3., New and Redevelopment Performance Standards of Order No. R2-003-0023. Section 2. Chapter 27 A, of the Redwood City Municipal Code, is hereby amended to add Article II (Stormwater Treatment Measures and Maintenance Program) to read in its entirety as follows: Sec. 27 A.35. PURPOSE AND INTENT. This article is necessary to protect the health, safety and general welfare of the people of Redwood City and the surrounding region from water quality degradation caused by stormwater run-off. This article has been enacted and shall be implemented in a manner consistent with the requirements of the SWRCB applicable to the City of Redwood City. This article shall be supplemental to the requirements of Article I, of Chapter 27A, of the Redwood City Municipal Code, with respect to stormwater. Sec. 27A.36. DEFINITIONS. The following words and phrases, whenever used in this article, shall be as set forth below: (a) Group 1 Project shall mean any private or public project which falls under the planning and building authority of the city that results in the creation of one acre (43,560 square feet) or more, in aggregate, of impervious surface over the entire project site, including but not limited to parking lots, roof area, streets, and sidewalks, or as hereafter amended by Order No. R2-2003-0023. (b) Impervious Surface shall mean land that has been modified by the action of persons to reduce the land's natural ability to absorb and hold rainfall. This includes any hard surface area which either prevents or retards the entry of water into the soil mantle as it entered under natural conditions pre-existent to development, and/or a hard surface area which causes water to run off the surface in greater quantities or at an increased rate of flow from the flow present under natural conditions pre-existent to development. Impervious surfaces include, but are not limited to, rooftops, pavement, sidewalks, walkways, patios, driveways, and parking lots where such surfaces are not constructed with pervious materials and/or are not designed to have zero stormwater discharge. (c) Permanent Stormwater Pollution Prevention Measures (PSPPM) shall mean any source control measures, site design measures, and/or stormwater treatment measures, or combinations thereof, that reduce stormwater pollution to the maximum extent practicable as required by AttylOrd/Ord.216 2269 063004 2 Muff # 802 ---"-- - ---- "'