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prevail. Information collected from the Oliver Mine adit, the Sylvester Gulch adit, and other <br />flooded workings in the region can be used to support your predictions...This information is <br />needed in order to evaluate impacts from springs or seeps from the mine after closure" [DMG <br />Adequacy Letter dated Mazch 28, 1986, Permit Renewal RN-O1 (submitted 1/17/86; approval <br />proposed 4/9/87)] <br />19. "The quality of mine water that might be expected after flooding of the Mt. Gunnison Mine <br />workings is best represented by data from the Oliver mine adit. The Oliver mine workings <br />have been flooded for several decades and chemical equilibria are probably dominated by <br />reduced conditions...Concentrations of selected major ions from the Oliver mine adit water <br />samples collected between 1979 and 1982 are presented graphically in new attached Figures <br />2.8.1.U and 2.S.1.V, `Selected Water Quality Parameters Oliver Adit', and in tabulaz form in <br />new attached Table 2.8.1.R.1, Oliver Mine Adit Water Quality...The water quality of the <br />Oliver mine adit samples is dominated by sodium and bicazbonate ions. Total dissolved <br />solids concentrations range between 1050 and 1900 mg/1." [West Elk Coal Company <br />Response (un-scanned; archived) dated June 25, 1986 to DMG Adequacy Letter dated March <br />28, 1986, Permit Renewal RN-O1 (submitted 1/17/86; approval proposed 4/9/87)] <br />20. "In the discussion regazding other geologic factors that may affect mining conditions, page <br />2.04-39 current and page 2.04-45 revised, note a sixth factor, anomalous `hot ground <br />conditions', which occur locally and considered in mine design and planning. This sixth <br />factor was not included in the revised text. Please provide information as to what is meant by <br />anomalous `hot ground conditions'." [DMG Adequacy Letter dated August 25, 1995, page 6; <br />Permit Revision PR-06 (submitted 6/8/1995; approval proposed 1126/96)] <br />21. "Temperature surveys run by Mineral Services Company in 1974 showed anomalous readings <br />of hole temperature to be as high as 196 degrees Fahrenheit near the bottom of certain holes. <br />Data collected in 1975 were not consistent with the eazlier readings, even in holes near known <br />burn zones. It is suspected that faulty equipment was used to record temperatures in some <br />holes. Due to these suspicions, the references to `hot ground conditions' were believed to be <br />in enor and deleted." [MCC Response to DMG Adequacy Letter dated October 25, 1995, <br />Permit Revision PR-06 (submitted 61811995; approval proposed 1!26!96); response accepted <br />by DMG as documented in DMG Adequacy Letter dated 11/20/95] <br />22. "Were any of the drill holes associated with the Apache Rocks permit area tested for <br />methane? The Division considers this important, due to the amount of methane gas <br />encountered in the Oliver No. Mine (Revised page 2.04-46)." [DMG Adequacy Letter dated <br />August 25, 1995, page 6; Pennit Revision PR-06 (submitted 6/8/1995; approval proposed <br />1 /26/96)] <br />23. "During the 1994 drilling programs, methanometer readings were taken from most holes. <br />From the top of drill hole RAV-4B, a hole near the abandoned Oliver No. 2 Mine, methane <br />readings of up to 5% were recorded (presumed from the C-seam). No methane was measured <br />from other holes. The gas encountered in the Oliver No. 2 Mine was reportedly liberated <br />through a fracture. Gas occurrences associated with fractures are common within the B- <br />Seam. A review of the Oliver occurrence suggests that this mine was poorly ventilated at the <br />