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i ~ Page Three Preliminary Adequacy Review GEX - Roadside & Cameo Mines April 77, 1981 2.04.5 General Description of Hydrology and Geolog 1. The applicant must submit a general geology map showing the major structural features in the general area (within approximately 10 miles of the permit area). This is needed to assess the groundwater and surface water hydrology of the area and to determine any possible effect from mining activities. 2.04.6 Geology Description 1. The applicant must submit additional analyses of the coal and complete analysis of representative roof and floor material from each mine. A list of the required analyses is attached. These analyses are needed to assess potential impacts on ground water in the mine and in the coal processing waste pile, potential impacts on surface water by the coal processing waste pile, and the revegetation success potential of the waste pile. Also, the applicant must submit analyses, for Boron, Molybdenum, total carbonate, fluoride, chloride and percent total sulfur, organic sulfur, sulfate sulfur, and pyritic sulfur for the refuse material or submit a complete analysis of the interburden from each mine. 2. A geologic cross-section through the Cameo No. 1 workings, similar to that in Exhibit 14 should be submitted. 2.04.7 Hydrology Description 1. The applicant must monitor the effects of mining operations on surface and groundwater quality and quantity. This includes, but is not limited to, the effects of coal processing waste banks, coal stockpiles, and underground workings. Two major areas of concern are the effect on alluvial ground water, and water in the Rollins Sandstone. The applicant is urged to contact the Division to discuss a monitoring program. 2. The applicant cites several studies on groundwater on pages 41-43. The specific locations of these studies must be given along with the portion (i.e., Rollins Sandstone) of the Mesaverde formation sampled. 3. The applicant must show the location of USGS gaging station No. 955 on the Colorado River. 4. The applicant must demonstrate hydrologic similarity between Badger Wash and Coal Creek and Jerry Creek in support of their respective annual runoff estimates. 2.04.8 Climatological Information The wind rose data presented in Figures 2.04.8A and 2.04.8E do not correlate. If both figures are meant to depict or represent wind patterns at the mine site, they should logically show some similarity. These tables perhaps demonstrate the applicant's need for an on-site meteorological monitoring station.