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U <br />INTRODUCTION <br />The 2000 Annual Hydrology Report for the Bear Coal Company, Inc., Bear No. 3 <br />Mine is hereby submitted in accordance with the rules and regulations of the Division of <br />Minerals and Geology. <br />The Bear No. 3 Mine is owned and operated by Bear Coal Company, Inc. The mine <br />is located along the North Fork of the Gunnison River approximately one quarter mile east <br />of Somerset, Colorado, along Colorado State Highway 133. <br />The Bear No. 3 Mine ceased all coal production on November 13, 1996 and the <br />portals were sealed in January 1997. During 1997 reclamation of the mine site was <br />initiated. The stacking tube, reclaim tunnel and truck loadout bin were dismantled and <br />removed from the site. The mine portals and mine access road were backfilled and <br />seeded. The two warehouses, shop, substation and ventilation fan were dismantled and <br />removed from the site. <br />On November 17, 1997 the DMG was notified of a slide located immediately west <br />of the reclaimed Bear No. 3 Mine portals. The slide became active on Saturday, November <br />15'". Debris from the slide flowed onto the old coal stockpile pad (west of the the <br />reclaimed stacking tube) and into the North Fork of the Gunnison River south of the mine <br />access bridge. Shortly after the slide occurred, water started flowing from the east side of <br />the slide scarp. <br />A treatment pond was constructed during May and June 2000 in accordance the <br />• plan presented on Drawing 11-4 (rev. 9/23/99). The mine seepage water is piped into the <br />pond, passively treated and then discharged though outtall 001. The effectiveness of the <br />treatment pond should improve as the vegetation in and around the pond matures. <br />• <br />