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f' • ~Y. <br />7~~ <br />~~ <br />III IIIIIIIIIIIIIIII <br />Twentymile Coal Company <br />June 10, 1994 <br />Kent Gorham <br />Environmental Protection Specialist <br />Division of Minerals and Geology <br />Office of Mined Land Reclamation <br />1313 Sherman Street, Room 215 <br />Denver, Colorado 80203 <br />RE: Annual Hydrology Report <br />Permit No. C-82-056 <br />Dear Mr. Gorham: <br />29515 Routt County Road #27 <br />Oak Creek, CO 80467 <br />Phone (303) 679-3800 <br />r?r~~ <br />~(t~~i`? <br />JAN 17 x994 <br />~IVIS:Oq UI .,Illrl41~ <br />v`","bY <br />Attached, please find two copies of the above referenced report. <br />I appreciate your understanding of the problems experienced in <br />preparing the report. The majority of the bugs have been worked <br />out of the system, but there are still a few that need to be taken <br />. care of during the coming months. One that I'm sure you will <br />observe is that the summary tables for the water year data does not <br />have "Water Year" in the title of the table. You will be able to <br />identify the water year table by looking in the table of contents <br />or merely looking at the period of record listed on the table. <br />The Fish Creek alluvial valley floor mining area data and text can <br />be found in Appendix B. Due to the intensive monitoring program <br />for this area it was decided it would be best to have the data and <br />text presented in its own appendix. Until the monitoring program <br />is reduced I imagine it will be best to continue handling this part <br />of the report in this manner. Please let me know if you have any <br />thoughts on this. <br />As you are reviewing the data you will note that selected stations <br />have more than the required sample episodes. This is pertinent for <br />stations 39, 84, 109 and 115. This sample count numbers reflect <br />the additional sampling that was conducted at the stations, for <br />example when the Division sampled 301 TCC obtained a split sample. <br />This is reflected in the larger sample number. This is just <br />brought to your attention so that you can better understand the <br />difference between sample numbers. <br />The report indicates that the Trout Creek sandstone replacement <br />well will be completed in June, 1994. This well has been an <br />ongoing concern due to the difficultly encountered in providing a <br />,~ good seal on top of the sandstone. The first seal that was placed <br />installed did not set up quickly enough and water piped up through <br />