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_- ~II II~III~I~I~~~ ~I~ sss DEPARTMENT OF NATURAL RESOURCES Dna K cieeenee. Eaeauwe Dlrecta MINED LAND RECLAMATION DIVISION D+~YIDC.~IIELTON, Dln-etw NkheM D. Wnm OwemOr October 25, 1984 Mr. Steve Self Eastside Coal Company P.O. Box 161 Silt, CO 81652 Re: Eastside Permit Review File No. C-84-063 Dear Mr. Self: I have reviewed sediment control and reclamation plan portions of your revised application. Additional information is needed on the following items: Our July 25 letter requested a comprehensive narrative on salvage, replacement and storage of topsoil and subsoil. The amended application indicates that two feet of pant growth material will be placed on the regraded refuse pile, but is not specific with respect to the quantity of material to be respread on other areas, specifically the office area, the backfilled portal area, and the coal storage expansion-sediment pond area. Based on data in the application, sufficient soil should be available from the two salvage areas to replace two feet on the refuse pile, and at least 6" on all other disturbed areas. 2. Erosion protection for primary and emergency spillways should be addressed, as requested in the July 12 adequacy letter. 3. We feel that straw bale checks placed in drainages will not provide sufficient sediment control during construction of the office and shop facilities. A system of berms or check dams designed for the 2 year 24 hour event would be more appropriate. Further, we recommend that a series of filter fabric dams be installed below the office area and maintained in addition to the revegetation and gravel surfacing. 4. Mulch rate and method of application should be specified. We recommend two tons per acre, either crimped into the soil or applied with a tackifier. 423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 886.3587