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RULE 2 PERMITS <br />I <br /> <br /> <br />2.045 General Description of Hydrology and Geology <br />A detailed description and maps, as required, of geology, hydrology, and groundwater and surface water <br />quality and quantity of all lands within the South Taylor/Lower Wilson permit revision area, the adjacent <br />area, and the general area, as defined in Section 1.04 (Definitions) of the Coal Regulations of the <br />Colorado Mined Land Reclamation Board are provided below. <br />Since 1973, detailed data and information have been collected, compiled, and analyzed by Colowyo on <br />the geology and hydrology of all lands within the permit revision area, the adjacent area and the general <br />area. This information is a compilation of previously-published reports, high-density exploration drilling, <br />field investigations, geologic mapping, aerial photography reviews, topographic mapping, data from <br />investigations by independent consultants, and climatologic monitoring data from on-site and the Craig <br />and Meeker climatological stations. <br />Colowyo has maintained close cooperation with many government agencies and has invited and allowed <br />numerous agencies to conduct investigations and experiments within and adjacent to the mining area. <br />These include but are not limited to the Water Resources and the Conservation Divisions of the U.S. <br />Geological Survey, Colorado State University, Bureau of Reclamation, and the Bureau of Land <br />Management. A list of government agencies, references, and consultants that provided information used <br />in this application is provided in 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 azea includes several watersheds and <br />groundwater systems, which will allow assessment of the probable cumulative impacts of the quantity and <br />quality of the surface and groundwater systems. Specifically, the "general azea" includes the drainages of <br />Good Spring Creek and Wilson Creek, perennial streams; and Taylor Creek, an intermittent stream. <br />Additional drainages in the "general area", but outside of the topographic basin, include Milk Creek, a <br />tributary to the Yampa River, and Jubb Creek, Collom and Morgan Gulches, minor ephemeral drainages. <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 />Both the "permit area" and the "adjacent area", as defined by Rule ].04, lie within the "general area" as <br />described above. <br />The geological information for the "permit azea" 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 <br />set forth in Section 2.04.7. <br />South Taylor/t.ower Wilson -Rule 2, Page 27 <br />Revision Date: 11/30/06 <br />Revision No.: PR-02 <br />