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'{' <br />~ Twentymile Coal Company <br />November 2, 1994 <br />Mr. Kent Gorham <br />Environmental Protection Specialist <br />Office of Mined Land Reclamation <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: <br />Dear Mr. Gorham: <br />III III III III IIII III <br />999 <br />29515 Routt County Road p27 <br />Oak Creek, CO 80467 <br />Phone (303) 879-3800 <br />RECEIVED <br />NOV 0 3 1994 <br />Division or minerals 8 Geology <br />'v - .Tnnp 1 99d _ Ravi <br />We have reviewed your letter of September 6, 1994 and are providing <br />the following responses. <br />Monument Survey Data <br />1. No data could be located to demonstrate compliance with the <br />requirement to survey monuments four months after panel start in <br />Panel 6 (assuming a September 20, 1993 start). <br />Response: The monuments were not surveyed four months after Panel <br />6 start, but were surveyed ten days, three months and six months <br />after the start of Panel 6. <br />2. What point on the well casing is surveyed? Top of casing or <br />ground level? <br />Response: Top of casing. <br />Hvdroloaic Data <br />1. Please submit the rating curves for each surface water site. <br />Response: The rating curves for surface water sites SW3A and SW4 <br />are attached. <br />2. The following monitoring sites or wells were missing data for <br />ammonia, nitrate, nitrite, orthophosphate, SAR, and molybdenum; <br />SW3A, SW4, GWA-1, GWA-2, GWA-6, and GWA-9. <br />Response: The tables have been updated and the missing data is <br />attached. <br />