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Mr. Robert Liddle -2- August 9, 1984 • Conclusions drawn from the preliminary analyses completed for this upcoming construction were presented to the Division in a meeting between Piessrs. Jim Pendleton and Bob Liddle, and, from Blue Ribbon, Bill Tate and Larry Reschke, and a consultant, Ken *Syers with Rocky Mountain Geotechnical, Inc. That meeting was held July 24, 1984. Based on the preliminary information available that day and recommen- dations from the Division, Blue Ribbon proceeded into the final design stage for the bench stability project. Field work was concluded August 3, 1984. Rocky Mountain Geotechnical, Inc. was retained to head up the final geo-technical analyses, including subsurface site investigations and reconnaissance, laboratory testing, analysis and design. Design includes the required construction plans for the project. In an effort to complete a portion of the bench stability con- struction in 1984, we are formally applying for the technical revision prior to having the complete and final design available. For the purposes of the technical revision application today, Appendix I represents preliminary geo-technical analyses and design, as well as information on sediment control and a reclamation plan discussion. This appendix will be revised to include final data and design as soon as it is available. References to the appendix will be designated Appendix I-A and Appendix I-B, with the former relating to the pre- liminary designs and the latter relating to the final designs which will be submitted later. • The technical revision request has been made in two phases in order to make the Division as aware as possible of Blue Ribbon's intent and to allow a preliminary Division review to proceed. As you know, the Division's advice is welcome. It is Blue Ribbon's intent to accom- plish the critical portion of the mine bench repair in 1984. Blue Ribbon understands that Division approval can only be obtained after the final design plan (Appendix 1-B) is reviewed by the Division. Included in this formal request for a technical revision are the following: Rule 2.08.4 Responses Rule 4.09 Responses Appendix 1-A Preliminary geo-technical analyses and design, information on sediment control and a reclama- tion plan discussion. Appendix 1-B Final version of all information presented in Appendix 1-A. Field work, including aerial photography, has been completed. Laboratory work, final analysis, and report writing remain. Very truly yours, y~ VtiJ`.~ ...` ~\`% William S. Tate • WST:KES enc.