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• C~ access road is compatible with the approved post mining land use of rangeland. (4.03.2(1)(f)) I1. Support Facilities -Rule 4.04 No support facilities remain on site. Pre-law concrete foundations existed on the site prior to mining. These foundations were not used during the Rimrock Coal Company mining operations and will not be removed. Rimrock Coal Company had leased two rail loadouts from Energy Fuels Mining Company, Santa Fe Loadouts Nos. 1 and 2, located in the town of Trinidad, Colorado. Although the operator for Rimrock Coal Company, Landmark Reclamation, Inc., reclaimed both loadouts during the summer of 1993, Energy Fuels Mining Company held the reclamation bond and maintained the reclamation liability for both of the loadouts. Landmark Reclamation, Inc., retains no liability for reclamation of the Santa Fe Loadouts. III. Hydrologic Balance -Rule 4.05. Regional baseline groundwater hydrology information is presented in Section 2.04.7(d) of the permit application. Three water-beazing lithologic units have been identified in the permit area and hydrologically adjacent areas. These are the Raton Formation, Vermejo Formation, and Trinidad Sandstone (youngest to oldest). According to the U.S. Geological Survey, the Trinidad Sandstone is the most significant aquifer of regional extent in the area, consisting of tightly cemented sandstone. It has been reported to yield from 0.5 to 5.0 GPM from wells in the Raton Basin. Water quality is poor to fair and use is primarily for livestock watering, limited domestic purposes, and irrigation. The coefFcient of permeability is estimated to be less than one darcy. The Trinidad sandstone is located approximately 80 feet stratigraphically below the coal seam to be mined. The Raton Formation overlies the Vermejo Formation. The Sopris Seam, the uppermost seam of the Vermejo Formation, is generally regarded as the formational contact. The Vermejo Formation overlies the Trinidad Sandstone and contains the coal seam of interest at Rimrock. The Vermejo Formation consists mainly of sandstone and coal lenses interbedded with shale. It has a reported ground water yield of 0.5 to 2.0 GPM. The water quality is generally rated as poor and unsuitable for human consumption. The water is mainly used for livestock and irrigation. This assertion was supported by water quality data supplied to the Colorado Department of Health by the perrnittee during its NPDES permit application. The regional hydrologic study performed by the U.S. Geological Survey (USGS WRI 83-132) treats the Trinidad Sandstone, the Vermejo and the Raton Formations 15