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O NA CE NS-2204 !$iI PAGE 7 no such discontinuance of water service shall be ordered until the said Executive Director has given such owner or occupant notice of the pending discontinuance and an opportunity to be heard on the matter. Seo. 41-1512. Definitions. As used in this article, the following terms have the following respective meanings: Anti-drain valve means a valve installed in the sprinkler head to hold water in the system to prevent water from leaking out of the lower elevation heads Application rate means the amount of water applied to an area in one hour measured in inches per hour Applied water means the portion of water supplied by the irrigation system to the landscape. Backflow prevention device means a safety device used to prevent pollution or contamination of the water supply due to the reverse flow of water from the irrigation system. Controller (station) means a device which controls or operates a specific number of sprinklers or watering devices operating at the same time Conversion factor (0.62) means a number that converts the maximum applied water allowance from acre-inches per acre per year to gallons per square foot per year. The conversion factor is calculated as follows: (325,851 gallons/ 43,560 square feet)/12 inches = (0.62) 325,851 gallons = one acre foot 43,560 square feet = one acre 12 inches = one foot To convert gallons per year to 100-cubic-feet per year, another common billing unit for water, divide gallons per year by 748. (748 gallons = 100 cubic feet.) Effective precipitation or usable rainfall means the portion of total precipitation that is used by the plants. Precipitation is not a reliable source of water, but can contribute to some degree toward the water needs of the landscape. Emitter means a device that fits on the irrigation system and allows water to slowly flow through small openings from the irrigation line to the root zones of the plants