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Several potential aquifers exist in, and adjacent to, the permit area, including: (1) Alluvial and <br />alluvial terrace deposits associated with the North Fork of the Gunnison River and Sylvester <br />Gulch; (2) Colluvial deposits; (3) Lenticular, discontinuous sandstones and coals; and (4) The <br />Rollins Sandstone. The most significant occurrence of groundwater in the general area is the <br />alluvial aquifer adjacent to the North Fork of the Gunnison River. Several domestic wells are <br />located along the river in the alluvial material. Local bedrock groundwater movement in the <br />discontinuous lenticular sandstones above the Rollins Sandstone is controlled by stratigraphy, <br />faults and fractures. Groundwater discharge occurs through numerous seeps and springs in the <br />area. The spring Flows are generally intermittent and emanate from localized, lenticular <br />sandstones above the F-Seam of the Upper Coal Member. Small seasonal springs emanate from <br />unconsolidated Colluvial material. These springs flow in response to seasonal precipitation. <br />No alluvial valley floors (AVFs), as defined in Rule 1.04(10), exist within the permit area. <br />Alluvial deposits along the North Fork of the Gunnison River below the town of Somerset have <br />been found to meet the geomorphic criteria and irrigation requirements of an alluvial valley floor. <br />This area will not be affected by the operation. The facilities area at the Bear No. 3 Mine is <br />located on alluvial material adjacent [o [he North Fork of the Gunnison River, and this has been <br />the case since 1934. This alluvial material does not meet the criteria for designation as an alluvial <br />valley floor. <br />As noted in Bear Coal Company's 1995 Annual Hydrologic Report, beginning in June of 1995, <br />personnel at the Bear No. 3 Mine began to notice a measurable amount of water building behind <br />the seals in the 3rd West Section. The source of this water was undetermined since during <br />development of the 3rd West no measurable water was encountered. In June of 1995, this mine <br />inflow averaged approximately 18 gallons per minute (gpm), which was consumed during the <br />normal mining process. During 1996, water reportedly continued to flow from the 3rd West seals. <br />Water also began flowing from the bleeder seals in [he 2nd West Section. This additional inflow <br />overcame the mine's ability to consume inflows during normal mining processes. Bear Coal <br />Company found it necessary to discharge mine inflow water to the North Fork of the Gunnison <br />River during 1996. This discharge to the North Fork of the Gunnison River was stopped in the <br />later part of 1996 when mining operations were discontinued at the Bear No. 3 Mine. <br />On November 11, 1996, the Beaz Coal Company permanently ceased all mining operations. at the <br />Bear No. 3 Mine due to geological conditions encountered in the mine. The three existing portals <br />at the Bear No. 3 Mine were permanently sealed. Discharge pipes were installed to allow for <br />potential drainage from each of the sealed portals. Because the Bear No. 3 Mine has been sealed, <br />no further information is currently available on mine inflow to the 3rd West Section or any other <br />potential inflow to other areas of the mine. <br />On November 15, 1997, slide activity occurred in an area located immediately west of the Bear <br />No. 3 Mine portals. Debris from the slide flowed onto the old coal stockpile pad and into the <br />North Fork of the Gunnison River below the mine access bridge. On November 17, 1997 Bear <br />personnel noted water flowing from an area to the east of the slide scarp (immediately west of the <br />sealed Edwards Mine Portal). According to recent monitoring reports from the Bear Coal <br />Company and measurements taken by the Division, this spring is continuing to flow at <br />8 <br />