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RULE 2 - PERMITS <br />TABLE 2.05.6(2) -TI <br />SIMPLIFIED WATER BALANCE FOR PSCM <br />PRODUCTION LEVEL (NINITONS CLEAN) <br />2.0 <br />WATER BALANCE CATEGORY <br />Si stem Inputs (gpm/acre _ft /y -r) - — — - <br />- -- -------------- - - - - -- - -- <br />- 1\1inelntlous� - - <br />- <br />- -- 52'83.q--- - - - - -- - - - - - -- <br />Subtotal System Inputs (acre- ft /yr) <br />83.9 <br />System Outputs (g m /acre- ft /yr) <br />- Surface Moisture (Coal Shipments)' <br />27 444.2 <br />- Depletion of overlyin, alluvium due to Mine lnflmv s' <br />0.180.3 <br />- Surface Dust Control <br />6.911 1 <br />- Evaporative Losses (All Active Ponds) <br />*/J7•9 <br />Subtotal System Outputs (acre- ft /yr) <br />88.5 <br />Change in Storage (acre- ft /yr)5 <br />-4.6 <br />Notes: <br />General - Inputs to Peabody Sage Creek Mining, LLC's (PSCM) vvater system are primarily "round <br />vvater inflows to the active mine workings. With the exception of the system outputs identified, all water is <br />recycled and reused within the mine water system. Asterisk denotes value not available. <br />Mine inflows are based on the maximum amount of water predicted at 26 months during the permit <br />term. <br />- Surface moisture loss calculation based on maximum estimate of surface moisture of 3.0 percent for <br />2 million tons per year of coal production. <br />' - Based on calculation of potential alluvial groundwater flow along Grassy and Little Grassy Creeks <br />to mine workings at 26 months during the permit term. <br />' - Based on maximum (total) pond surface area of approximately 14.9 acres and annual lake <br />evaporation rate for Hayden, Colorado based on data from U.S. Department of Commerce and U.S. Bureau <br />of Reclamation procedures in Seneca Coal Company's Water Rights Augmentation Plan for the Yoast Mine. <br />` - Given that all system inputs are recycled, with the exception of the identified system outputs (losses <br />or depletions), the difference between inputs and outputs represents a net change in system storage. <br />Midterm Review 2.05 -67.2 Revision 04/2013 <br />