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Of <br /> !NdT[RC'��lCC CCRRl=�JPC'hlG'ChVC� <br /> To John Turner <br /> From. Scott Jones <br /> Date: June 28, 1990 <br /> Subject; Inspection of Coal Basin Refuse Pile and Rock Tunnel Waste Pile <br /> Second Quarter, 1990 <br /> Or, Jul 28, 1990 an inspection was made of the Mid-Continent Resources <br /> Sutey Coal Refuse Pile and Rock Tunnel Waste Pile The inspection was <br /> made by myself, a Registered Professional Engineer in the State of <br /> Colorado I have had over eight years experience in the design, construction <br /> and operation of refuse piles. Lew Pon Thompson, Mid-Continent's <br /> Environmental Coordinator accompanied me during this inspection. <br /> The purpose of this inspection was to ensure that the refuse piles were <br /> being constructed according to the approved designs and the requirements <br /> of Rules 49 and 4 10 of the Colorado Mined Land Reclamation Board and <br /> 30CFR 77 2115 of the Mine Safety and Health Administration. The inspection <br /> included observations of structural stability, compaction procedures and <br /> hydrologic control, <br /> At the time of the inspection the Sutey Coal Refuse Pile was receiving <br /> refuse from the preparation plant Refuse was being discharged from the <br /> convey belt located at the north end of the pile. From the conveyor belt <br /> discharge point, a pad has been built with refuse in order for the heavy <br /> equipment to access the end of the belt conveyor. Refuse material is <br /> subsequently pushed from this pad, down the slope, to the existing edge of <br /> the refuse pile. The refuse was being pushed out in lifts approximately one <br /> to one and half feet thick by a Caterpillar D-8 Dozer, The dozer was making <br /> five to seven compaction passes over the lifts after initial placement. <br /> A walk around of the entire area indicated that all of the site drainage <br /> structures were in good operating condition. The first lower pond was <br /> scheduled to be cleaned within the next two weeks. The new extension <br /> pond is scheduled to be constructed this fall, Also, the State Health <br /> Department has indicated that the underdrain must be a permitted outfall. <br /> The operator has decided to re-route this drainage to the lower ponds. A <br /> Technical Revision to the permit is to be submitted in'the near futur^ <br />