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~ 'r1IYEN7'YM16B <br />~ COw.COMPANY <br />A Cyprus Amax Company <br />Twentymile Coal Corporation <br />29515 Routt County Road k 27 <br />Oak Creek, Colorado 80467 <br />303-879-3800 <br />«i iiir~iiiniii iii <br />June 1, 1995 <br />RECEIVED <br />JUN 0 2 1995 <br />Mr. Kent Gorham <br />Environmental Protection Specialist Division o1 Minerals 8 Geology <br />Colorado Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: PERMIT C-82-058; TECHNICAL REVISION 95-21; REVISED REFUSE DISPOSAL AREA: <br />ADEQUACY RESPONSES <br />Dear Mr. Gorham: <br />., <br />Please find enclosed duplicate copies of additional revised permit materials for TR 21. This submittal <br />includes the following: <br />o A revised Table of Contents for Exhibit 26A incorporating Appendix E. <br />o Revised Figure 4 of Exhibit 26A referencing Mirafi filter fabric as suitable alternative for prescribed <br />filter material. <br />o Exhibit 26A, Appendix D, pages D-33 through D-36. These pages are appended to Appendix D <br />and address design information for the temporary 100-year diversion above the proposed fill <br />material as we have previously discussed. <br />o Appendix E to be added to Exhibit 26A addressing design criteria pertaining to the selection of the <br />Mirafi fabric as a suitable alternative to the filter material originally proposed. <br />Thank you for your continued cooperation in this matter. Please contact me at (303) 870-2730 if you have <br />any questions or require additional information. <br />TWENTYMILE COAL COMPANY <br />Karl C. Koehler <br />Environmental Engineer <br />/kck <br />Enclosures <br />cc: Permit No. C-82-056; TR 95-21 file <br />