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A.J. ]caldron February 17, 1995 <br />Re: 1993 and 1994 Annual Hydrologic Reports <br />September 16, 1993 letter, from J.F.. Stover for SMC to the <br />Division, Re: Somerset Mining Company TR-018 - S-2 Monitoring <br />Reduction Permit C-81-022, pages 1 and 2.05-46iii. <br />September 22, 1993 letter, from the Division to SMC, Re: Somerset <br />vine, File C-81-022, TR-18 Second Adequacy Review. <br />October 20, 1993 letter, from J.E. Stover for SMC to the <br />Division, Re: Somerset Mining Company TR-018 Second Adequacy <br />Review Permit C-81-022, pages I, 2, 3, and 2.05-46iv. <br />?:ay 27, 1991 letter, from J.E. Stover for SMC to the Division, <br />Re: Somerset ?lining Company Application for a Minor Revision !~OV <br />C-9:-007 Permit C-81-022, page 2.05-47ii, and as revised 6-7-94. <br />If the Division would like SMC to submit the Spring Monitoring <br />Report for the third time, as a revision to the permit, we can do <br />so. Since SMC supplies coal to its customers based on market <br />demand, a definitive date to begin monitoring each of these <br />"springs" as the mining progresses would be difficult. to <br />determine ~,~ith certaint}•. Also, while preparing, submitting, and <br />awaitin approval of the report, I have continued to monitor t.hc <br />"springs" according to the schedule in effect. <br />As stated in the Spring }lonitoring Report, previously submitted <br />and in the 1994 Annual Hydrologic Report, the only "spring" to <br />consistently contribute to surface flow into the \orth Forlt of <br />the Gunnison is Spring 8, groL~ndwater discharge from the <br />abandoned Oliver Mine. Springs 1-G, if they are truly springs, <br />are separated from the mine workings by over 2,000-feet. of <br />overburden. Any impect on Lhesc "springs" through mine <br />subsidence is highl}• unlikely, and would be the result of <br />subsidence fer.tures of unprecedented proportions. Access to <br />Spring 1-6 can b° described as difficult at best. <br />Spring 7 Sad no recorded flow throughout the monitoring by <br />1.'estcrn Scope Carbon, and practically no flow throughout the <br />monitoring by- S?;C. Spring 9 is located above the main access to <br />the mine, and probably will never be undermined. Springs 10 and <br />11 aro aloe; the old State Highway- 133, and have alread,v be^n <br />impacted more by road maintenance by the Colorado Department of <br />Transportation and reclamation activities at the }law!['s Xest east <br />site by the Division. <br />The Cumulative Hydrologic Impact Study - Vorth Forlc of the <br />Gunnison River (Revised 9/25/921 states in parts: page 21, "The <br />underground ruining operations, through subsidence effects, may <br />reduce stream flows or flows from springs and seeps." page 27, <br />"Streamflow reduction could develop from three separate scenarios <br />11 <br />