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i r III IIIIIIIIIIIII III <br />999 <br />Azurite, Inc. <br />10001 CR 12 P.O. Box 338 <br />Cotopaxi, CO 81223 ~ ~ <br />(719) 942.4178 <br />Fax: (719) 942-4178 I tC ~ ~ ~~~~ <br />January 28, 1997 <br />Mr. Tom Schreiner, Env. Prot. Specialist <br />State of Colorado Division of Minerals and Geology <br />1313 Sherman Street Room 215 <br />Denver, Colorado 80203 <br />Divas; .. .: -.~r~ <br />RE: PERMIT ~ 77-193, TEZAK HEAVY EQUIPMENT CO, INC. 2ND ADEQUACY <br />RESPONSE TO DMSION OF MINERALS AND GEOLOGY <br />Please refer to your 12-26-96 Adequacy Review letter. <br />2. Included with the hard copy of this coorespondence is a properly executed agreement <br />between Tezak Heavy Equipment and the City of Canon City regarding compensation for <br />damages to the two existing water lines that will be covered by the proposed haul roa~3. <br />3. Included with the hard copy of this coorespondence is properly executed document <br />demonstarting compliance with Rule 6.3.12 regarding compensation for damage to structures <br />not within the affected land but within 200 feet of affected land boundaries, specifically the shop <br />building. <br />5. A stability analysis of the final highwall configuration is underway. Field measurements have <br />been taken and rock samples have been delivered to private independent labs for triaH.ial <br />compression testing of rock materials. A state of the art software program called GALENA <br />VERSION 2 will be used for highwall stability analysis. This software incorporates not only <br />Bishop and Spencer methodologies, but also includes Sarma computations for more accurate <br />estimations of rock stabilities generated by non-vertical slices. The GALENA program includes <br />input for seismic loading and is more capable of handling the data reflecting the foliation <br />induced loading limitations of various highwall configurations. A number of highwall <br />configurations including the proposed highwall configuration will be analyzed with this program <br />to either collaborate the highwall configuration as proposed or to support the modifiaition of the <br />proposed final highwall contact to one that best suites the results of highwall stability analysis <br />based on overall stability factor, cost, total recoverable reserve, and long term maintenance and <br />security of the highwall contact. It is estimated that the analysis will be completed for Division <br />review within the next 30-45 days. <br />7. Included in the hard copy of this coorespondence are engineering designs showing details of <br />the stormditches, culvert crossing of the roadway, and energy dissipating feed and outlets areas <br />