Laserfiche WebLink
~ ~~ ~ <br />WESTERN SLOPE CARBON, INC. ~-- - <br />MIKE OFFICE-SOMERSET, COLORADO 81434 <br />303929-5231 <br />June 17, 1980 <br />rir. Tom Pike <br />Office of Surface Mining <br />Brooks Tower <br />1020 - 15th Street <br />Denver, Colorado 80202 <br />RE: GROUND WATER MONITORING EAST [ C,g:E <br />Dear Mr. Pike: <br />In order to comply with special stipulation No. 1, attached to the Coal Mining <br />and Reclamation Plan for Hawk's Nest Mine, Federal Coal Lease No. C-27103, I <br />have been making weekly inspections of the 1st East Mains. I apologize for <br />being late with this report. I delayed writing it until I received results <br />of some water analyses which were lost when the laboratory company moved. <br />There are no measurable inflows of ground water in this area of the mine. <br />There is a small amount of seepage from the roof, floor and coal face through- <br />• out the section. This seepage is slightly less in the southern entries, and <br />gradually dries up out by the face. The section also seems to be drying up <br />as we proceed to the east. Sump entries driven to the north have more water. <br />I estimate the total inflow at less than one GPM. <br />Sampling ground water in this area is difficult because of the small amount of <br />inflow in any one area. Samples were taken of drips from the roof, and from <br />ruts and sumps which had not been recently disturbed by mining traffic. <br />I have had seven samples analysed to date. They are sample numbers 15, 16, 17, <br />55, 56, 57, 58 on the attached sheets. All samples are much higher in all <br />quantities tested for, than is water from the North Fork of the Gunnison River. <br />Sample numbers one through six are of river water. Water taken from 1st Eas[ <br />Mains shows a much closer correspondence with water taken from drill holes, <br />sample numbers 12, 13, 14; and also corresponds with ground water descriptions <br />given in studies of this area (Price and Waddel 1973, Price and Arrow 1974, and <br />Brogdon and Giles, 1977). <br />The roof in Lhis area is a massive sand stone. There are a few fractures, <br />trending gradually SE as shown on the attached map. Water seepage is not asso- <br />ciated with these fractures. <br />r. <br />A E U O S I D I A R V O F M O a T M W E S T [ M E R C Y C O M P A N Y <br />