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r - <br />Environmental Planners, Scien(ists, and Engineers <br />January 23,1995 <br />7~^ <br />C! ~ /~,~ <br />vp 24 <br /> <br />Subject: Response to the Adequacy Letter dated 1/3ry5, Minor Revision No. 138, West Elk Mine, C- <br />80-007 <br />REVISED PERMIT PAGES <br />2. The revised As-Built drawings for MB-2R and MB-3 will be submitted as part of Minor <br />Revision 144. <br />MB-3 SYSTEM <br />1.A. The value for the soil erodibility coefficient has been modified from 0.01 to 0.15. The <br />original input was a keystroke error of 0.015 rather than 0.15. The results have no impact <br />on the functioning of the pond, but the cottected submittal is provided for inclusion in <br />Volume 8A-2. <br />1.B. The design rationale was originally provided to expedite your review of the submittal. It may <br />be incorporated into the permit if you prefer. Please utilize your original copies. <br />1.C. The revised As-Built drawing of MB-3 will be submitted as part of Minor Revision 144. <br />2. No response is required. <br />3. A revised copy of Map 54 is attached to clarify the outfall locations of C3-3 and C3-4. <br />4. No response is required to this observation. <br />5. No response is required. <br />6. No response is required. <br />7. No response is required. <br />SEPTEMBER 16 AND 27, 1994 SUBMITTALS <br />1. No response is required to this observation. <br />5990 Greenwood Plaza Blvd. Suite 250 Englewood, CO 80111 <br />(303)850-0930 Fax(303)721-9298 <br />DivS,` 1095 <br />Ms. Christine Johnston °(,,,,~~ <br />Colorado Division of Minerals and Geology e'q~s 4 <br />1313 Sherman, Room 215 ~rD(o9y <br />Denver, CO 80203 <br />