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1 <br />_.~ <br />• <br />CUMULATIVE HYDROLOGIC IMPACT STUDY - NORTH FORK OF THE GUNNISON RIVER <br />(Revised 9/25/92) <br />This Cumulative Hydrologic Impact Study (CHIS) for the drainage basin of the North <br />Fork of the Gunnison River has been prepared by the Colorado Division of Minerals <br />and Geology (CDMG) pursuant to Rule 2.07.6(2)(c>. This CHIS assesses the probable <br />cumulative hydrologic impacts of all anticipated coal mining operations upon the <br />general area of the North Fork of the Gunnison River Valley. Included in this <br />assessment are all existing coal mines and those proposed coal mines for which <br />permit applications have been submitted to the Division. This study has been <br />prepared using analyses contained in permit applications for mines located in the <br />general area and other available information including site visitation by members <br />of the Division staff. <br />Table 1: Permitted Mines in the CHIS Studv Area <br />L J <br />Disturbed/ 1991 <br />Affected Produc- <br />CDMG Area tion <br />Mine Operator Number Tvpe* Status (Acres) (tons) <br />Hawk's Nest Permit Revoked C-81-016 UG RE 29!517 N/A <br />Bond Forfeited <br />West Elk Mountain C-80-007 UG A 120/4220 712,426 <br />Coal Co. <br />Somerset Somerset Mining C-81-022 UG A 63.8/5529 Not Reported <br /> Development <br /> Cn'.y <br />Bear Bear Coal Co. C-81-033 518,178 <br />No. 1 & 2 UG R 19/1360 <br />No. 3 UG A 25/406.7 <br />Blue Ribbon Blue Ribbon C-81-047 UG R 17.6!340.8 N!A <br /> Coal Co. <br />Terror Creek Terror Creek C-83-059 LO A 13/19.52 N/A <br /> Company <br />Orchard Cyprus Orchard C-81-038 UG A 142.3/3422 883,589 <br />Valley Valley Coal <br /> Co. <br />. "UG" - Underground, "LO" Loadout <br />. "A" - Active, "TC" - Temporary Cessation,"R" - Reclaimed <br />