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III IIIIIIIIIIIII III ~ ~ <br />REPORT CONCERNING THE EFFECTS OF UNDERGROUND COAL <br />MINING ON THE SOLITARIO RANCH WELL <br />Las Animas County, Colorado <br />January, 1995 <br />Carlton E. Gerity P.E. <br />INTRODUCTION <br />This report is a summary of a review of information and evaluation concerning the <br />effects of underground coal mining at the Golden Eagle Mine of Basin Resources, on <br />:`~ the Tatum water well. It has been done at the request of Ann Tatum, owner. The <br />well is located on the north side of Highway 13 on the Solitario Ranch. The Solitario <br />Ranch is located in Las Animas County, Colorado, approximately 25 miles west of <br />Trinidad in the Weston, Colorado area. The Golden Eagle mine's incline and <br />operations area are located about 1.3 mi to the East. <br />As part of this evaluation, part of one day was spent reviewing the files at the <br />Colorado Division of Minerals and Geology, and one day was spent in the field at the <br />site. <br />The concern is that the water table in the well has been lowered, and that this is the <br />result of either the installation of a ventilation shaft in the vicinity, or of <br />underground mining and caving just to the north, or of a combination of both. <br />CONCLUSION <br />The evaluation has been done using only data that is available to the public in <br />various files located in the State of Colorado, Department of Natural Resources, ~ <br />Division of Minerals and Geology offices. _ 1'W <br />y~Gv, <br />The conclusion of this review is that it is row bable that underground longwall coal ~ r ~, <br />mining completed in the vicinity of the well would influence the water level in the ~1~ <br />well. <br />STATE OF COLORADO, DEPARTMENT OF NATURAL RESOURCES, <br />DIVISION OF MINERALS AND GEOLOGY, DENVER COLORADO <br />Time was spent at this state office to determine the extent of the operations of Basin <br />Resources at the Golden Eagle Mine, the mining plan of the company, and the <br />ground water hydrology presented as part of the Golden Eagle Mining permit, No. <br />C-81-013. From this file, copies were made of: the report, Response to Renew¢l <br />Stipulations 52 ¢nd 67 Prob¢ble Hydrologic Consequences of Mining; Map 17, <br />PIONEER ENGINEERING <br />