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Mir1'teile L. Austin November 25, 2005 Depletions Paget The total annual losses resulting from evaporation, water lost in product, dust control and conuete belching are shown in the following table: TABLE B • LOSSE8 Site Name Evaporation Losses ao-ft Lost in Product ao-o-ft Dust Control ao-ft Concrete t3atching aoft Total (ao-ft) Howe Pit 0 19.87 4 72.8 38.67 Tanabe Pit 29.3 0 0 0 29.3 Dunes Develo ment 9.04 58.9 2 0 69.89 Mann Lakes 71.13 8.82 2.97 0 80.72 Ft Lu ton PR 11.8 0 0 0 11.8 Rlverbend O reflon 0 0 0 0 0 S S Pro 12.9 14.T 2 0 29.6 A slurry welt wiB be installed around the Stagecoach Stop Property so that the site will be sealed from the tributary groundwater. During the first two months of the mining operation the plt wiN be dewatered and the water will be used to construct the shirty wall. Approximately 81 acre-feet of water will be pumped and used in the slurry wall construceon in the first two months, or approximately 30.5 acre-feet per month during Ocbber 2005 and November 2005. Ali process water for the Stagecoach Stop Property wiU be pumped from a new proposed wall located Inside the miNng pennft boundary but outside of the slung wall. The water from the well witl be pumped ink a smaA lined wash pond Inside the slurry wail Tined pit You have assumed that the process water is 100% consumed. A monthly breakdown of the lagged mining depletions are shown in the attached Table 1. Replacements The proposes sources of replacement water are 25 shares of Pullet Ditch and tufty consumable water leased from the City of Greeley, Consolidated Mutual Water Company and Saint Vrein Left Hand Water Conservancy District. The Fulton Ditch water will be recharged into Zigan Reservoir which Is a reclaimed gravel pit located in Section 35, Township 1 South, Range 87 West, 6°' P.M. The plan will also account for the impacts and credits from the dewatering at the Stagecoach pit. The plan es8mates that dewatering will occur for 8 hours per day, 385 days per year at a rate of 1,000 gpm. See attached Appendix C for the esttmated credit and depletons from dewatering. The historic use of the 25 Fulton ditch shares yields 43.89 acre-feet of water during April through October while generating 5.25 acre-feet of return fkmr obligation during November through March. This quantiftption is based on the technique used in the March 24, 1999 approval for the Fulton Lakes Pit, where the historic wnsumpltve use values were determined using an anaysis decreed in case number 82CW393. In this approach, headgate diversions were based on average rnonthy values for the period of 197&1988 and a 10% conveyance loss was assumed as wetl as a farm efficiency of 50%. The return flow obligations, which were not addressed in the above decree, were calwlated for this plan based on the, assumption that all ~`