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SAGE CREEK COAL COMPANY — PEABODY SAGE CREEK MINE <br />RESPONSE TO COMMENTS ON WATER WELL APPLICATION <br />1. Please provide a breakdown of your uses, including diversion and depletion amounts, <br />to account for the 10 AF/YR requested in Item 7 of the application for a well permit. <br />Response: The water is to be used as a future potable source for mine facilities such as a <br />bath house (showers, toilets, sinks) and office (kitchen, boot wash, cleaning, fire <br />suppression, etc...). In the near -term PSCM (Peabody Sage Creek Mine) will use <br />existing facilities located approximately 1 mile north of the proposed well. <br />Estimated usages are based on historic consumption at the adjacent Foidel Creek Mine. <br />The potable source well at the Foidel Creek Mine produces about 5 gpm and supports <br />over 250 employees. This figure is comparable to the maximum anticipated number of <br />employees at the Sage Creek Mine. <br />(5 GPM) x (1440 MINUTES /DAY) x (365 DAYS/YEAR x 3.068x10 ACRE FT /GALLON) = 8.06 ACRE -FT /YR <br />10 acre -ft/yr was used in the original application to account for unknown, potential, <br />future needs and possible increases in flow rates. It is not anticipated that use would ever <br />exceed 10 acre -feet per year. <br />The planned well would pull water from the Trout Creek Sandstone, a relatively confined <br />aquifer that underlies an impermeable shale unit, the Twentymile Sandstone and another <br />massive and impermeable shale unit (see figure 1). Very few, if any, local domestic <br />wells exist in the Trout Creek Sandstone in this area because of the depth to the unit. <br />Senior calls on the water would be extremely unlikely. <br />RECEIVED <br />JAN 2 8 2010 <br />WATER CN 2NEER S <br />