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Revision February 1982 is encountered (U.S. Department of Interior 1978). The shale zones in the formation do not hold water but do transmit some water in the fracture systems. Coal can have secondary permeability but does not exhibit primary permeability. The Rollins Sandstone Member of the Mesaverde Formation is the first permeable layer above the impermeable Mancos Shale Formation. Due to its limited primary and secondary permeability, the member is considered a limited aquifer in the area. Yields are usually 10 gpm and total dissolved solids average around 3000 mg/1 for this alkaline water (U.S. Department of Interior 1978). Known uses of water from this limited aquifer are pre- sented in Appendix XXIV-5, Table III A.1, and Figure III A.1. Bowman (1980) drilled four holes through the Bowie Member into the Rollins Sandstone Member from within the Hawk's Nest Mine. Since water was used as the circulating fluid, direct hydrologic data were not taken but one hole was completed as a degasification well. Bowman concluded that the coal seams were dry and the small amount of water encountered was due to fractured sandstones between the Band C coal seams. The methane gas pro- duced from the coal seams would push the water out of the well at about 0.33 gpm. The water was an alkaline sodium-bicarbonate type with 8,532 mg/1 of total dissolved solids. BEAK (1980) drilled three holes using air which penetrated the Paonia Shale Member. One hole (WSC 1) penetrated 45 feet below the E Seam and was dry the entire length. The other two holes drilled close by hit water 25 feet below the E Seam in the same sandstone which was dry in WSC 1. The only explanation is that the second holes intersected a fracture system in the sandstone. The E Seam was intersected at an elevation below and down 2.04-23 - ..: '~`°S.T:tii°R.1~.iw~ure+.rirAr`a. :~re.s _ _ '-