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2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />19 <br />20 <br />21 <br />22 <br />23 <br />24 <br />25 <br />26 <br />27 <br />28 <br />(f) "certified landscape irrigation auditor" means a person certified to perform landscape <br />irrigation audits by an accredited academic institution, a professional trade <br />organization or other program such as the US Environmental Protection Agency's <br />WaterSense irrigation auditor certification program and Irrigation Association's <br />Certified Landscape Irrigation Auditor program. <br />(g) "check valve" or "anti -drain valve" means a valve located under a sprinkler head, or <br />other location in the irrigation system, to hold water in the system to prevent drainage <br />from sprinkler heads when the sprinkler is off. <br />(h) "common interest developments" means community apartment projects, condominium <br />projects, planned developments, and stock cooperatives per Civil Code Section 1351. <br />(i) "conversion factor (0.62)" means the number that converts acre -inches per acre per <br />year to gallons per square foot per year <br />0) "drip irrigation" means any non -spray low volume irrigation system utilizing emission <br />devices with a flow rate measured in gallons per hour. Low volume irrigation systems <br />are specifically designed to apply small volumes of water slowly at or near the root <br />zone of plants. <br />(k) "ecological restoration project" means a project where the site is intentionally altered <br />to establish a defined, indigenous, historic ecosystem. <br />(1)"effective precipitation" or "usable rainfall" (Eppt) means the portion of total <br />precipitation which becomes available for plant growth. <br />(m) "emitter" means a drip irrigation emission device that delivers water slowly from the <br />system to the soil. <br />(n) "established landscape" means the point at which plants in the landscape have <br />developed significant root growth into the soil. Typically, most plants are established <br />after one or two years of growth. <br />(o) "establishment period of the plants" means the first year after installing the plant in the <br />landscape or the first two years if irrigation will be terminated after establishment. <br />Typically, most plants are established after one or two years of growth. <br />(p) "Estimated Total Water Use" (ETWU) means the total water used for the landscape as <br />described in Section 492.4. <br />(q) "ET adjustment factor" (ETAF) means a factor of 0.7, that, when applied to reference <br />evapotranspiration, adjusts for plant factors and irrigation efficiency, two major <br />influences upon the amount of water that needs to be applied to the landscape. A <br />combined plant mix with a site -wide average of 0.5 is the basis of the plant factor <br />portion of this calculation. For purposes of the ETAF, the average irrigation efficiency <br />is 0.71. Therefore, the ET Adjustment Factor is (0.7)=(0.5/0.71). ETAF for a Special <br />Landscape Area shall not exceed 1.0. ETAF for existing non -rehabilitated landscapes <br />is 0.8. <br />(r) "evapotranspiration rate" means the quantity of water evaporated from adjacent soil <br />and other surfaces and transpired by plants during a specified time. <br />23152.08101\8405361.1 <br />-4- <br />