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To Ms. Candace impson Page 2 <br /> The portion of the old pile that was constructed after 1977 will <br /> . be inspected as snow cover allows; inspections to identify <br /> erosion problems will be conducted once per month from May <br /> through July. Inspection will also be made after any significant <br /> rainfall event. If any are noted, temporary control will be <br /> established by hay bales or parts of bales being placed at pru- <br /> dent intervals along the rill or gully within 10 days of detection. <br /> When the refuse pile dries out (generally July or August) , mecha- --- <br /> nical methods will be used to remove or fill the rills and gullies, <br /> always keeping in mind to minimize disturbance of existing <br /> vegetation: i . e. , small rubber-tired backhoe or D-3 tractor. In <br /> some cases (steep slope areas) (1 : 1 only) soil conservation type <br /> log or rock check dam structures will be utilized. All disturbed <br /> areas will be reseeded and mulched using hand-broadcast methods, <br /> thus again minimizing any impact to existing vegetation. <br /> Tunnel Rock Pile <br /> Most of the pile is now completely covered with rock or will be <br /> by the end of 1985 (previously, portions were used on a temporary <br /> basis for coal preparation plant refuse) . It is believed that <br /> very little rill and gullying will occur before topsoiling will <br /> take place (some in 1985, '86, ' 87) . As topsoil is placed, the <br /> same program as described on the old refuse pile will be used. <br /> Any rill and gullying occurring before topsoiling will be <br /> addressed each summer with mechanical equipment as the pile dries <br /> out. <br /> New Coal Refuse Pile (Sutey) <br /> As the pile progresses upward, a 2: 1 outslope will develop. <br /> Before topsoiling occurs (probably 5 to 6 .5 years) , the area will <br /> be inspected each spring and any rills and gullies noted. As the <br /> area dries out , mechanical equipment will be used to reshape the <br /> area. After topsoiling occurs the same program as described on <br /> the old refuse pile will be used: <br /> Call me if you have any comments. <br /> Sincerely, <br /> )a.j'Z <br /> Environmental Coordinator <br /> Mid-Continent Resources, Inc. <br /> P. 0. Box 158 <br /> Carbondale, Colorado 81623 <br /> DWBowman :ms <br /> Copies to <br /> George Wear <br /> Wes Huff <br />