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r~. Western • July 20, 1981 Mr. David C. Shelton Director Mr. Tom Gillis Reclamation Specialist Mined Land Reclamation 1313 Sherman Street Denver, CO 80203 Re: Blue Ribbon Mine Your File No. C-047-81 Abatement for Violation 81-18 Dear Sirs: ~ iii iiiiiiiiiiiii iii Weslorn Assoa aged Coal Corp. Suilc 2300 410 Seventeenth Slreel Uenver, L'olorado 00202 (303) 026-1966 RECEIVED p/ j~` 'J UL?_01921 ~jdlr:FU LAE~D RECIAh•~AIfO'7cCOAt C.OLO, pE7: OF, NATURAL RESOURCES. A plan and time table for stabilizing the outslope of the mine bench has been developed. Since the related violation occurred before Western Associated Coal became involved in the property, the history of tine stabilization problem figs been reviewed. Background Phone discussions gave a consistent analysis of the problems. Mr. Jim Herron, who issued the violation, stated that he has observed the same condition for three years. 'That condition is a yearly slump of the outer edge of the mine bench area. Mr. Ames Scroggs, a Blue Ribbon Mine employee with the responsibility of outside maintenance, stated that the slumping is a real problem and feels the instability is primarily caused by improper drainage. The slumping is a cyclic water related problem associated with spring run-off, In other seasons stability of rile downslope is maintained. Mr. Sob Asher, the Blue Ribbon Afine Superintendent prior to lJestern purchasing the mine, also concludes the lack of stability in the bank is related to spring run-off. Location A copy of an aerial photograph will serve to demonstrate this. Attachment I in red outlines our interpretation of the area defined by the outslope of the mine bench and area below per Violation 81-18. The double red-lined portion indicates rile outer edge of the mine bench whlc}~ is the critical area related to stability.