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Mayo and Associates, LC <br />^ • <br />Sandstone Channel <br /> <br />1 <br />,, ~' <br />Mancos Shale <br />Figure 5 Schematic diagram of water bearing sandstone bodies in the basal sand <br />' (i.e., Star Point and Rollins Sandstone) and sandstone channels of the <br />-ower Mesaverde Group. <br />I • West Elk Mine interlayered horizons of moderate to extremely low hydraulic <br />' conductivity were found in core samples from the Rollins Sandstone. In the absence of <br />' open fractures the extremely low conductivity horizons will prevent appreciable vertical <br />movement of groundwater. <br />'. <br />Appreciable groundwater inflow and lazge dischazge springs have been associated with <br />both small and lazge displacement fault damage zones. In mine fault zone-related <br />groundwater flow is described below for specific mines. In the Wasatch Plateau two <br />significant, relatively constant discharge springs, Birch and Big Bear issue from a fault <br />damage zone (i.e., the Pleasant Valley Fault; Bills, 2000). A third spring, Little Beaz is <br />likely related to the damage zone. Although each of the springs issue from the Panther <br />Evaluation of Potential Groundwater Inflows <br />Associated with E Seam Mining, <br />West Elk Mine, Somerset, Colorado <br />20 <br />February 24, 2004 <br />