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DEPARTMENT OF NATURAL RESOURCES David H. Getchee. Executive Director ~ Y 1 MINED LAND RECLAMATION DIVISIION DAVIDC. SHELTON, Dlrvetor Richard D. Lamm Governor October 30, 1984 Mr. Richard A. Mills Environmental Engineer Empire Energy Corporation P.O. Box 68 Craig, Colorado 81626 RE: Adequacy Review of Technical Revision Application: laydown Area and Crane Work During Placement of Overland Conveyor Permit No. C-044-81 Dear Mr. Mills: The Division has completed an initial review of the above mt:~ntioned application that was submitted by Empire Energy Corporation (EEC) on September 25, 1984. Below are specific comments and concerns relating to the proposed work. Empire Energy Corporation is requesting a technical revision to pursue the construction of an overland conveyer crossing of the Williarris's Fork River and Colorado Highway No 13/789. This construction will involve the construction of a temporary access road, laydown yard and the operation of a structural crane within the active channel of the Williams's Fork River. The construction of the tube conveyer enclosure will prevent coal fines pollution of the Williams's Fork River. For this reason, carefully controlled minor disturbance of that channel would appear to be warranted. However, EEC should provide an explanation based on sound reasoning that placement of a crane in the active stream channel is absolutely necessary for successful completion of the project. The information presented within the technical revision application is extremely vague in reference to the conditions within and adjacent to the channel of the Williams's Fork River. It will be important to minimize disturbance to that channel and the adjoining areas. EEC presents two access alternatives which include possible placement of fill as a pad for the crane or excavation of a ramp in the river bank. The scale of Map IV - 9 does not allow determination of the actual site configuration in the immediate area of the proposed channel disturbance. EEC should provide the Division with a construction scale site map (perhaps one inch equals twenty feet) and an appropriate contour interval such as one foot. The applicant should indicate upon the map exactly what envelope the crane would operate within. Areas disturbed by the crane may require specific repair techniques. The actual channel entry point may require armoring to prevent increased erosion. One access alternative is to walk the crane from the laydown area on the east 423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567