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irrigation purposes will be considered to be 50% consumptive. <br />(ii) Water stored in the pond will be used for industrial purposes <br />to wash gravel mined from the nearby Parshall Gravel Pit shown in Figure <br />No. 3 attached hereto. Water will be placed into a 17,000 gallon clarifier <br />and used to wash up to 75,000 tons of mined material per year. Per <br />recommendations by the State Engineer's Office, water consumed during <br />the process is assumed to be 4% by weight of the material mined. The <br />total water consumed during the gravel washing operation, including the <br />initial fill of the clarifier, is calculated to be 2.26 acre-feet per year as <br />shown in Table No. 2 attached hereto. Water is delivered to the gravel pit <br />using one of the two pumps currently installed at the pond. All pumped <br />withdrawals will be metered. Water withdrawn from the pond for industrial <br />purposes will be considered to be 100% consumptive. <br />(iii) Water will be lost to evaporation off of the surface of the <br />pond. Monthly evaporation is determined based upon the General <br />Guidelines for Substitute Water Supply Plans Submitted to the State <br />Engineer for elevations over 6,500 feet of the mean sea level. According <br />to the National Oceanic and Atmospheric Administration's Technical <br />Report NWS 33, gross annual evaporation in the area is 36 inches. The <br />maximum surface area of the pond is estimated to be 0.48 acres; <br />therefore the total maximum annual evaporation from the pond is <br />calculated to be 1.44 acre-feet as shown in Table No. 3 attached hereto. <br />Water lost to evaporation will be considered to be 100% consumptive. <br />b. Replacements: During periods that a call has been made on the <br />Colorado River downstream of its confluence with Muddy Creek, CRWCD <br />contract water will be released in an amount sufficient to offset the out-of-priority <br />storage made by the Dawson Gulch Spring Pond. The CRWCD releases shall <br />mitigate the potential injury to the Colorado River downstream of its confluence <br />with Muddy Creek. An example schedule of releases to offset depletions in the <br />event of a year-round call on the Colorado River below its confluence with Muddy <br />Creek is attached as Table No. 4. The volume of water that may be stored out- <br />of-priority in this manner shall be limited by the availability of the replacement <br />water; currently the Applicant has a contract for 5 acre-feet per year from the <br />River District but may obtain more in the future. <br />C. Accounting: The Applicant will be required to account for and <br />augment out-of-priority storage. Storage in the pond is defined as the inflow <br />minus releases, releases being outlet releases or natural seepage from the pond: <br />Storage = Inflow - Releases (eq 1)