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.; <br />~. _ <br />West Elk Coal Company, Inc. <br />Post Office Box 591 <br />Somerset, Colorado 81434 <br />Telephone 303 929 5015 <br />April 14, 1987 <br />Susan Mowry <br />Reclamation Specialist <br />Colorado Mined Land Reclamation <br />1313 Sherman Street <br />Denver, CO 80203 <br />Division <br />RE: Technical Revision, Hydrology Monitoring <br />Reduction, Mt. Gunnison No. 1 Mine, CMLRD <br />Permit No. C-007-80 <br />Dear Susan: <br />Please find enclosed three (3) copies of a Technical <br />Revision to reduce the hydrology monitoring at Mt. <br />Gunnison No. 1 Mine. <br />The revision is set up to be inserted in Volume 1 of <br />the Mt. Gunnison No. 1 Mine Mining and Reclamation <br />Plan, pages 4-62 to 4-72c. Table 2.8.2.Y is to be <br />inserted on Page 2-481 of Volume 1. Exhibit 2.8.1.C <br />Revised is to be inserted in Volume 3 after Exhibit <br />2.8.1.C. Please keep 2.8.1.C (original) as all well <br />locations are still valid. Exhibits 3.4.4.B.2 and <br />3.4.4.B.3 are to be inserted in Volume 4 after <br />Exhibit 3.4.4.B.1. Also enclosed is a new Table of <br />Contents with all recent updates to be inserted in <br />Volume 1. <br />The reduction in hydrology monitoring is proposed, as <br />we discussed with CMLRD in October of 1986, for a <br />variety of reasons as follows: <br />o There is more than adequate baseline data (up <br />to nine (9) years) available to assess <br />current and future potential mining impacts. <br />o Economic conditions in the coal markets have <br />dictated a much lower that predicted <br />production tonnage from the Mt. Gunnison <br />Mine. <br />o At lower production rates it is not <br />economically feasible to continue to collect <br />baseline data for areas that will not be <br />mined in the current 5 year permit term, and <br />longer. <br />~~I II~II~I~I~~~I~ II~ <br />~~, s- ~- <br />~~~ V~~ <br />APR 21 ~98vr <br />~?ECLgMATION p~~S10N <br />AMCO-6204 <br />