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iiiiiiiiiiiniuiii <br />C c~~us <br />"`~ Yampa Valley <br />Cyprus Yampa Valley Coal Corporation <br />29587 Routt County Road x27 <br />Oak Creek, Colorado 80467 <br />303-879-3800 <br />November 3, 1993 <br />RECEIVED <br />NOV 4 1993 <br />Kent Gorham <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />plt,i~icn et Adinerals a i;eu ~yY <br />RE: Submittal of Materials for Trout Creek Well. Field Minor Revision 93-92; Permit C- <br />82-056. Foidel Creek Mine <br />Dear Mr. Gorham; <br />Enclosed, please find the materials being submitted for the above-referenced field <br />approved minor revision. These materials include a completion diagram, new hydrologic <br />monitoring exhibit page showing the location of the well, and revised hydrologic <br />monitoring exhibit page which reflects the inclusion of replacement water <br />supply/monitoring well FCM #2 as part of the monitoring program. Page Ex 14-8 also has <br />been updated to reflect the loss of monitoring wells 006-82-48A (covered by well <br />91 M005) and 006-82-48C (being replaced by FCM #2) earlier this year as a result of the <br />mining advance. Due to the delays encountered in the completion of the replacement <br />Trout Creek Well, TCC was not able to obtain a sample from this well until late October <br />(which is in keeping with the request of the Division as outlined in the 1992 AHR review. <br />TCC intends to include this initial sampling in the upcoming AHR for the Trout Creek <br />Sandstone, and will continue future monitoring in accordance with the normal semi-annual <br />schedule outlined in the exhibit. <br />This well was completed in the Trout Creek Sandstone zone, and initial quality of field <br />parameters for this well fall within the expected range for this unit. Total depth of the <br />well is 320 feet, with a screened interval of 213 feet to 313 feet. Due to the nature of <br />this well (the welt head actually being located within the underground workings) water <br />levels will be obtained by means of pressure readings. As a result, the datum elevation <br />on future AHR data sheets will reflect the elevation of the pressure gage location, rather <br />than the ground level (mine floor) elevation noted on the completion diagram for reference. <br />As discussed, the Hydrologic Monitoring map will also be updated to reflect the presence <br />of FCM #2, and will be included in a future submittal due to the current overlap in <br />permitting items at this time. <br />Kent, your assistance in this matter has been greatly appreciated. Should you have any <br />questions or comments, please contact me at your convenience. <br />Sincerely, <br />Marcus A. Middleton <br />Environmental Specialist <br />