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.~ TINENTYMIL6 COAT, COMPANY A Cyprus Amax Company III IIIIII'lllllllll sss Twentymile Coal Corporation 29515 Routt County Road # 27 Oak Creek, Colorado 80467 303-879-3800 October 21, 1996 RECEIVED ocT Z 3 1996 Mr. Kent Gorham Environmental Protection Specialist Division of Minerals & Geology 1313 Sherman Street, Room Z 15 Denver, CO 80203 Division or Minerals & Geology RE: 1995 Annual Hvdroloev Report Review Response, Foidel Creek Mine. # C-82-056 Dear Mc Gorham: The following are responses to issues and comments regarding the above-referenced report as per your letter of 21 August 1996. General Comments The October date in Table 1 for well 009-79-4 is represented as 10/26/95. Should this date read 10/26/94? Response: The referenced date should indeed read 10/26!94. Revised copies of Table 1 are enclosed with this correction made. Please replace previously submitted copies with the enclosed copies. 2. No elevation information is shov<m on Figure 2 for well FBR-11B. Response: No monitoring of well FBR-11 B was required during the 1995 water year. TCC will revise Figure 2 to provide this information in fitture AHR's. It is TCC's intent to utilize Permit No. C-82- 056 Map No. 13A as Figure 2 for future AHR's. Since this document is approved under the permit, revisions to this Map must presumably by handled by a formal revision process. TCC is considering an unrelated permitting action which would also involve revisions to Map 13A; our preference would be to roll the elevation designation change into the map at the same time. 3. Figure 85 y-axis is labeled incorrectly as (cfs). Response: Revised copies of Figure 85 are enclosed which show the y-axis labeled with (umhos/cm). Please replace previously submitted copies with the enclosed copies. is\documen0, IvUoidel.ckV' Salmsp.doc