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• ~ _~ _, _ • <br />saa nosay Iam1aN la 1da4'al~'J <br />N015~IC NQI1tlWtl1~3a 4NY103NIW <br />- 78015 L 1,tl1~1 <br />a3ni3~3~ <br />SNOWMASS COAL COMPANY <br />Denrsr O//ice.' Suite 2300 <br />d10 Seventeenth Street <br />Denver, Colorado 80202 <br />(3031 825.7988 <br />Mine Olrrce~ P.O. Bbx 980 <br />Carbondale, Colorado 81623 <br />(303)96&3440 <br />May 15, 1984 <br />Mr. Robert Liddle <br />Reclamation Specialist <br />Colorado Mined Land Reclamation <br />1313 Sherman Street, Room 423 <br />Denver, CO. 80203-2273 <br />RE: Snowmass Coal Company's Response <br />To Water Rights Issue <br />Dear Mr. Liddle: <br />Snowmass Coal Company has previously agreed to prepare sad file <br />an augmentation plan covering any injury to other vested water rights <br />by April 1, 1984. Snowmass is proceeding with this effort, but <br />delays have occurred due to the lack of correlation in the data <br />obtained from the mine in-flow studies to date. It is now believed <br />that data from the weirs being installed in North and Middle Thompson <br />Creeks will be required prior to Snowmase being able to make defini- <br />tive calculations regarding the small quantity of water coming into <br />the Snawmaes mines from Middle and North Thompson Creeks, as compared <br />with the decreed water right from water tributary to the Colorado River. <br />Aa Mined Land Reclamation is aware, Snowmaes was not allowed to <br />start installation of the wiera at the originally intended time (April, <br />1983). The Army Corps of Engineers required a 404 permit application <br />prior to performing any dredge or fill activities in the creeks. <br />Weir designs were completed and the first weir was operational on <br />May 10, 1984. On that date, the continuous recorder showed a flow of <br />77 cfs, or approximately 35,000 GPM. The flow in North Thompson Creek <br />continued to increase, and, unfortunately, has washed away the fill <br />on the sides of the weir. Depending on the enowpack melt rate, Snowmasa <br />may or may not be able to refill the washed-out areas in order to meet <br />the M.R inspection report deadline to have this weir operational by <br />June 1, 1984. <br />To date, tha mine in-flow studies which have been carried out as <br />suggested by MLR, indicate that the portion of mine in-flow which could <br />coming either from North or Middle Thompson Cteek is approximately <br />12 gallons per minute. This 12 GPM estimate is based on components <br />the mine in-flaw which have relatively low conductivity, and ie <br />derived from October, 1983 data. Since, in our opinion, the mine in- <br />