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<br />C crn~us <br />Yampa va~tey <br />III IIIIIIIIIIIII III <br />999 <br />Cyprus Yampa Valley Coal Corporation <br />29587 Routt County Road N27 <br />Oak Creek, Colorado 80467 <br />303-879-3800 <br />July 18, 1994 <br />Kent Gorham <br />Environmental Protection Specialist + <br />Division of Minerals and Geology R E(.F(~~Ef~ <br />Office of Mined Land Reclamation - <br />1313 Sherman Street, Room 215 JUL 21 1994 <br />Denver,Colorado 80203 <br />C:1'i5:0~ 0' hi~litia~o u ~...,,,~ly <br />RE: 1993 Annual Hydrology Report, Mine No.3 <br />Permit No. C-94-062 <br />Dear Mr. Gorham: <br />The following presents Colorado Yampa's responses to the Division's <br />comments made in its letter of June 15, 1994. <br />1. Map 4b has been revised to show the elevation of well 008-SP-4b, <br />and the permit boundary has been added to this map. <br />2. The problem arises from trying to plot the period of record data <br />on one figure. The amount of data that has to be plotted makes it <br />extremely difficult to prepare a figure that can be read easily. <br />The manner in which the software program is set up forces the data <br />to be plotted out at a specific interval which compresses the date <br />and corresponding data onto one figure. Unfortunately by doing <br />this the date interval does not correlate to one tick equal to one <br />month, but rather forces the data into a date sequence that can be <br />fit onto the figure. The figure does provide the data and the <br />trend of the data can be easily obtained from looking at the graph. <br />I believe this is a problem that we will have to live with unless <br />we change the report to provide the current water year data only. <br />Although sometimes this gets to be a problem when there are more <br />than 12 sampling episodes during the year. I would welcome any <br />thoughts you might have on overcoming this problem. <br />3. The data for this site is presented on table 9. <br />4. The flow data for site 24 is provided <br />5. The flow data for sites 700 and 900 will be added to next AHR. <br />6. I discussed the sampling of the bedrock wells with Marcus and <br />he advised this was discussed with the Division and there was not <br />a problem with sampling the wells in June. However, as we <br />discussed it appears the Division's understanding of when the <br />bedrock wells were to be sampled was not the same as CYCC's. I <br />