2016-008 - Santa Ana Water Efficient Landscape Ordinance

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"Irrigation Management Efficiency" or "IMF" means the measurement used to calculate the irrigation efficiency of the irrigation system for a landscaped project. A 90% IME can be achieved by using evaportranspiration controllers, soil moisture sensors, and other methods that will adjust irrigation run times to meet plant water needs. "Irrigation efficiency" or "IE" means the measurement of the amount of water beneficially used divided by the amount of water applied to a landscape area. Irrigation efficiency is derived from measurements and estimates of irrigation system characteristics and management practices. The minimum average irrigation efficiency for purposes of these Guidelines is 0.71. Greater irrigation efficiency can be expected from well designed and maintained systems. The following irrigation efficiency may be obtained for the listed irrigation heads with an IME of 90 %: Irrigation Method DULQ DULn* EU IE ** Spray nozzles 65% 71% High efficiency spray nozzles 70% 73% Multi stream/Multi trajectory rota MSMT) nozzles 75% r2% 76% Stream rotor nozzle 70% 73% Microspray 75% 76% Bubblers 85% 77% Drip emitter 90% 81% Subsurface drip 90% 81% *DU,, = .386 + (.614)(DULQ) ** IE (spray) _ (DULH)(EVIE) ** IE (drip) = Emission uniformity (EU)(IME) "Landscape coefficient" (KL ) is the product of a plant factor multiplied by a density factor and a microclimate factor. The landscape coefficient is derived to estimate water loss from irrigated landscape areas and special landscape areas. "Landscape Documentation Package" means the package of documents that a project applicant is required to submit to the City pursuant to Section 2.1 of these Guidelines. "Landscape Installation Certificate of Completion" means the certificate included as Exhibit F of these Guidelines that must be submitted to the City pursuant to Section 23(a)(1) of hereof. "Landscape professional" means a licensed landscape architect, licensed landscape contractor, or any other person authorized to design a landscape pursuant to Sections 5500.1, 5615, 5641, 5641.1, 5641.2, 5641.3, 5641.4, 5641.5, 5641.6, 6701, 7027.5 of the California Business and Professions Code, Section 832.27 of Titlel6 of the California Code of Regulations, and Section 6721 of the California Food and Agriculture Code. "Landscape area" means all the planting areas, turf areas, and water features in a landscape design plan subject to the Maximum Applied Water Allowance and Estimated Applied Water Use calculations. The landscape area does not include footprints of buildings or structures, sidewalks, driveways, parking lots, decks, patios, gravel or stone walks, other pervious or non- 34