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RULE 2 PERMITS <br /> 2.04.5 General Description of Hydrology and Geology <br /> This application provides a detailed description and maps, as necessary, of geology, hydrology, and <br /> ground and surface water quality and quantity of all lands within the permit area, the adjacent area, and <br /> the general area, as defined in Rule 1.04 of the Coal Regulations of the Colorado Mined Land <br /> Reclamation Board. <br /> Since 1973, detailed data and information have been collected, compiled and analyzed by Colowyo on the <br /> geology and hydrology of all lands within the permit area, the adjacent area and the general area. This <br /> information is a result of high density exploration drilling, field investigations, geologic mapping, aerial <br /> photography, topographic mapping, data from several investigations by independent consultants, and <br /> monitoring data from on-site and the Craig and Meeker climatological stations. <br /> Colowyo has maintained close cooperation with many government agencies and has invited and permitted <br /> numerous agencies to conduct investigations and experiments within and adjacent to the mining area. <br /> Such investigations and experiments have been conducted by the Water Resources and the Conservation <br /> Divisions of the U.S. Geological Survey, Colorado State University, Bureau of Reclamation and the <br /> Bureau of Land Management. A complete list of all government agencies and consultants is provided in <br /> the discussion under Section 2.03.3. <br /> The "general area" with respect to hydrology is defined by Rule 1.04, as that topographic basin that <br /> surrounds the area to be mined during the life of the operation. This area includes several watersheds and <br /> a groundwater zone, which will allow assessment of the probable cumulative impacts of the quantity and <br /> quality of the surface and groundwater system. <br /> Both the "adjacent area" and the "permit area", as defined in Rule 1.04, lie within the "general area" as <br /> previously described. Specifically, the "general area" includes the drainages of Goodspring Creek and <br /> Wilson Creek, perennial streams; and Taylor Creek and Streeter Gulch, intermittent and ephemeral <br /> streams,respectively. <br /> Groundwater resources within the "general area" are delineated by these major basins and are a function <br /> of the stratigraphy and local climate conditions. <br /> The geological information for the "permit area" and the "general area" are discussed and described in <br /> detail in Section 2.04.6. Groundwater information for the general area, adjacent area and permit area is set <br /> forth in the discussion under Section 2.04.7. <br /> The location of wells and surface water sites located within and within one mile of the Permit Boundary is <br /> provided on Map l OB. The cross-reference for these sites can be found in Exhibit 7. <br /> Rule 2 Permits 2.04.5-1 Revision Date: 4/7/17 <br /> Revision No.: RN-07 <br />