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9 ~~~ I~~ I ~~ I~~ COAL COMPANY June 18, 1993 Mr. Larry Routten Senior Reclamation Specialist Colorado Division of Minerals and Geology 215 Centennial Building 1313 Sherman Street Denver, Colorado 80203 Re: C-81-019, Colowyo Coal Company May 27, 1993 Inspection Dear Mr. Routten: 5731 State Highway 13 Meeker, Colorado 81641 (303) 824-4451 RFi=~ 11~~ C JUN 21 Ig93 Diwsierornan~e~s~s,1 ULUILU} On May 27, 1993, the Division conducted an inspection of the Colowyo minesite. The report indicated some concern regarding a small slide observed in the southwest section of the East Mining Pit. The Division has indicated that the topsoil should be salvaged by July 15, 1993. The purpose of this letter is to provide some additional insight regarding this area of concern and to request further guidance from the Division as to what specific actions Colowyo should implement to alleviate the Division's concerns. The area in question is located in the head water area of the original Streeter drainage. Previous landowners had constructed a stockpond to collect water from the adjacent small spring and the upgradient surface drainage. The area was also a pre-existing natural slump area and hillside movement was evident prior to Colowyo entering the area. Historically, the usual practice for building such ponds called for a small dozer to be used to push up an embankment utilizing available materials nearby. As such, topsoil salvage was not of significant concern and the embankments consist of an unknown variety of materials. Typically, as such small stock ponds are used by livestock and wildlife and otherwise fill with sediment, the ponds require periodic maintenance. Again, a small dozer was often utilized to push the pond cleanings up onto the embankment. The result is that the area surrounding the pond and the impoundment itself is a mixture of contaminated topsoil, rocks, mud, etc.