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' - �1.. ��l.t �"ti`l_Sf '� ,�,� `_,>.., >u�. Y..-'�k• -trj_% �� �_(j <br /> STATE OF COLORADO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> Department of Natural Resources PW, 4"wit <br /> 1313 Sherman St, Room 215 <br /> Denver,Colorado 80203 <br /> Phone-(303)866-3567 <br /> FAX:(303)832-8106 <br /> DEPARTMENT OF <br /> NATURAL <br /> RESOURCES <br /> Roy Romer <br /> DATE: June 12, 1995 Governor <br /> James S Lochhead <br /> Executive Director <br /> TO: Dave Bucknam Michael B Long <br /> � Division Director <br /> 1 <br /> FROM: Jim Pendleton <br /> RE: Dutch Creek�um <br /> ontingency Recommendations <br /> Coal B ines (Permit No: C-81 -017) <br /> I visited Coal Basin Thursday, June 8th, in the company of Steve Renner. We spent <br /> the majority of our time examining the Dutch Creek flume and the adjoining yard area. <br /> We also drove up Dutch Creek to approximately 1 /2 mile above the rock tunnel, where <br /> snow impeded our travel. We also drove up Coal Creek to the north end of the Sutey <br /> pile. I examined the debris flow rock levees on Dutch Creek to approximately 1000 <br /> feet west of the Shop building. Finally, we visited the location of the stream meander <br /> erosion down slope from the western portion of the old waste pile. <br /> Dutch Creek Flume <br /> The flume had accumulated bed load gravel for a distance of approximately sixty feet <br /> above the up gradient end of the 9 foot pipe. Bogue excavating had removed the <br /> gravel accumulated the day before at Steve Renner's direction. Large cobbles (up to <br /> 18 inches in diameter) could be seen and heard migrating (saltating) through the pipe. <br /> The culvert was flowing approximately one quarter full. The standing wave was <br /> backing water up for approximately forty feet up gradient from the pipe. Steve <br /> reported that flow had decreased over night. <br /> The first response priority is to attempt to protect the flume and pipe from failing or <br /> overtopping. I am not optimistic about our probability of success. Accumulated snow <br /> pack in Coal Basin is abnormally deep, similar to most of Colorado. The weather <br /> prognosticators are projecting warm weather and accelerated runoff by next <br />