560 - Laserfiche WebLink

Home Browse Search

engineer, or any other person authorized by the state to design a landscape, an irrigation system, or authorized to complete a water budget. Distribution uniformity means the measure of the uniformity of irrigation water over a defined area. Ecological restoration project means a project where the site is intentionally altered to establish a defined, indigenous,historic ecosystem. Established landscape means the point at which plants in the landscape area have developed significant root growth into the soil. Typically, most plants are established after one or two years of growth. Estimated Total Water Use (ETWU) means the total water used for the landscape as calculated in subsection(d) of this section, "Water Efficient Landscape Worksheet." Evapotranspiration (ET) rate means the quantity of water evaporated from adjacent soil and other surfaces and transpired by plants during a specified time. ET Adjustment Factor (ETAF) means a factor of 0.55 for residential areas and 0.45 for non-residential areas, that when applied to reference evapotranspiration, adjusts for plant factors and irrigation efficiency. The ETAF for new and existing (non-rehabilitated) Special Landscape Areas shall not exceed 1.0. The ETAF for existing non-rehabilitated landscapes is 0.8. Graywater means untreated wastewater that has not been contaminated by any toilet discharge, has not been affected by infectious, contaminated, or unhealthy bodily wastes, and does not present a threat from contamination by unhealthful processing,manufacturing, or operating wastes. Graywater includes, but is not limited to, wastewater from bathtubs, showers, bathroom washbasins, clothes washing machines, and laundry tubs, but does not include wastewater from kitchen sinks or dishwashers. Hydrozone means a portion of the landscaped area having plants with similar water needs and rooting depth. A hydrozone may be irrigated or non-irrigated. Invasive plant species means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database. Irrigation audit means an in-depth evaluation of the performance of an irrigation system conducted by a certified professional. An irrigation audit includes, but is not limited to: inspection, system tune-up, system test with distribution uniformity or emission uniformity, reporting overspray or runoff that causes overland flow, and preparation of an irrigation schedule. The audit must be conducted in a manner consistent with the Irrigation Ordinance 560 Page 3