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document and the "Cumulative Hydrologic Impact Study" document for this mine area. <br />Hubbard Creek runs through the permit area between the mine bench and the former location of the <br />coal stockpile and is the only tributary of the North Fork of the Gunnison which may be affected by <br />operations at the Blue Ribbon Mine. <br />The disturbed area associated with [he Blue Ribbon Mine is approximately 20 acres, or about O.l <br />percent of the drainage area of Hubbard Creek, excluding those areas of upstream diversion. Since <br />the mine workings are above the level of Hubbard Creek, the mine presently does not experience any <br />inflows which can be directly related to water flowing in Hubbard Creek. <br />A spring survey of the permit area has been completed and one spring was located. This spring is <br />located below the mine bench and discharges from rock strata which are stratigraphically below the <br />E seam. <br />A small ephemeral drainage enters Hubbazd Creek from the east near the northeast corner of the <br />per[nit area. It flows only during spring runoff. The gradient of the channel is 28 percent. <br />Geology -Rules 2.04.5 and 2.04.6 <br />For a description of the geology of the area, please refer to the "Probable Hydrologic Consequence" <br />section of this document. <br />The geology sections in the permit application can be found in Section 2.04.6 and in Exhibit R. <br />Climatological Information -Rule 2.04.8 <br />The climatological information in the permit application can be found in Section 2.04.8. <br />The Wilcox Ranch Station is the climatic data station closest to the Blue Ribbon Mine. This station <br />is approximately three miles southeast of the Blue Ribbon Mine, just east of Bowie, on the north side <br />of the North Fork of the Gunnison River. <br />At Paonia, the climate is semi-arid with annual precipitation averaging about 15 inches per year. <br />Mean annual precipitation increases with elevation, reaching over 40 inches per year ne; r the ~crrti. <br />of Crater Peak. The Ivlay-September precipitation is 5 inches for the lowlands and l3 inches for the <br />mountain peaks. This indicates that snowfall patterns play an important part in determining the <br />hydrology of the area. Temperature extremes at Paonia have ranged from -28 °F in January to 100 <br />°F during July gnu August. The average temperature is approximately 49'F. Snowfall averages 58 <br />inches per year. <br />Soils -Rules 2.04.9 <br />