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Mayo and Associates, LC <br />'~ <br />~~ <br />~~ <br /> <br />Roof drip samples and water from a 94-foot long vertical borehole drilled upward from <br />mine workings have 14C ages of about 14,000 years and 3H contents of 0.00 TV. Nearby <br />spring and creek water have 3H contents of 9 to 33 TU. Roof drip water also has S'H and <br />5180 compositions that aze appreciably more negative that neazby spring and stream <br />waters (Mayo and Associates 1997a, b). These data suggest that that sandstone channel <br />waters are ancient and recharged during cooler climatic times that present. The channel <br />water have no or very limited hydraulic communication with near surface groundwater <br />and surface water, <br />Monitoring well data were collected from the Spring Canyon and Panther Members also <br />indicate that Staz Point groundwater is not in active hydraulic communication with neaz <br />surface water. The wells are located in the mine 1,000 to 1,500 feet east of the Jose <br />Valley Fault. Samples from three Spring Canyon wells had laC ages of 14,SOO:o 19,500 <br />yeazs, 3H contents of 0.2 TU or less, and SZH and 5180 compositions that are appreciably <br />more negative than neaz surface groundwater and surface water. A sample from a <br />Panther well, located in the same general azea, had a mean 14C age of about 7,000 years <br />and contained measurable 3H (0.43 TU).. <br />3.3.2 Joes Valley Fault <br />Joes Valley Fault System, which extends about 60 - 80 miles in anorth-south direction <br />makes the eastern edge of the Crandall Canyon Mine, although the lease azea extends <br />west of the fault system (Figure 10). The fault has reported 2,300 to 2,500 feet of <br />Evaluation of Potential Groundwater Inflows <br />Associated with E Seam Mining, <br />West Elk Mine, Somerset, Colorado <br />38 <br />February 24, 2004 <br />