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SD-12 Efficient Irrigation <br />■ Design timing and application methods of irrigation water to minimize the runoff of excess <br />irrigation water into the storm water drainage system. <br />■ Group plants with similar water requirements in order to reduce excess irrigation runoff and <br />promote surface filtration. Choose plants with low irrigation requirements (for example, <br />native or drought tolerant species). Consider design features such as: <br />Using mulches (such as wood chips or bar) in planter areas without ground cover to <br />minimize sediment in runoff <br />Installing appropriate plant materials for the location, in accordance with amount of <br />sunlight and climate, and use native plant materials where possible and/or as <br />recommended by the landscape architect <br />Leaving a vegetative barrier along the property boundary and interior watercourses, to <br />act as a pollutant filter, where appropriate and feasible <br />Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain <br />growth <br />■ Employ other comparable, equally effective methods to reduce irrigation water runoff. <br />Redeveloping Existing Installations <br />Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) <br />define "redevelopment" in terms of amounts of additional impervious area, increases in gross <br />floor area and/or exterior construction, and land disturbing activities with structural or <br />impervious surfaces. The definition of" redevelopment" must be consulted to determine <br />whether or not the requirements for new development apply to areas intended for <br />redevelopment. If the definition applies, the steps outlined under "designing new installations" <br />above should be followed. <br />Other Resources <br />A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County <br />Department of Public Works, May zooz. <br />Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of <br />San Diego, and Cities in San Diego County, February 14, zooz. <br />Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood <br />Control District, and the Incorporated Cities of Orange County, Draft February 2003. <br />Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, <br />July zooz. <br />2 of 2 California Stormwater BMP Handbook January 2003 <br />New Development and Redevelopment <br />www.cabmphandbooks.com <br />