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~ ~ <br /> ~ ~ ~ i Appendix E <br /> Definitions <br /> The terms used in these Standards have the meaning set forth below: <br /> "Backflow prevention device" means a safety device used to prevent pollution or contamination <br /> of the water supply due to the reverse flow of water from the irrigation system. <br /> "Conversion factor" means the number that converts acre-inches per acre per year to gallons per <br /> square foot per year. <br /> "Check valve" or "anti-drain valve" means a valve located under a sprinkler head, or other <br /> location in the irrigation system, to hold water in the system to prevent drainage from sprinkler <br /> heads when the sprinkler is off. <br /> "Certified Landscape Irrigation Auditor" means an individual authorized by the Water <br /> Administration and Engineering Division of the Public Works Agency of the City of Santa Ana. <br /> "Certification of Design" means the certification included as Exhibit E of these Standards that <br /> must be included in the Landscape Documentation Package pursuant to Section 2.1 of these <br /> Standards. <br /> "City" means the City of Santa Ana_or its authorized designee. <br /> "Common interest developments" means community apartment projects, condominium projects, <br /> planned developments, and stock cooperatives per Civil Code Section 1351 <br /> "Distribution Uniformity" or "DU" is a measure of how uniformly an irrigation head applies <br /> water to a specific target area and theoretically ranges form zero to 100 percent. <br /> "Drip irrigation" means any non-spray low volume irrigation system utilizing emission devices <br /> with a flow rate measured in gallons per hour. Low volume irrigation systems are specifically <br /> designed to apply small volumes of water slowly at or near the root zone of plants. <br /> "Emitter" means a drip irrigation emission device that delivers water slowly from the system to <br /> the soil. <br /> "Estimated Applied Water Use" or "EA WU" means the annual total amount of water estimated to <br /> keep plants in a healthy state. It is based on factors such as reference evapotranspiration rate, the <br /> size of the landscaped area, plant water use factors, and the irrigation efficiency within each <br /> hydrozone. <br /> "Evapotranspiration adjustment factor" or "ETAF" means a factor of seven tenths (0.7), which is <br /> <br /> the standard of water use efficiency generally required by this Water Efficient Landscape <br /> <br /> Ordinance and the Standards, except that the ETAF for a special landscape area shall not exceed <br /> 1.0. <br /> 75A-56 <br /> <br />