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Mayo and Associates, LC <br />0.6 <br />0.5 J~ <br />E o.4 ~/ <br />a <br />3 0.3 <br />0 <br />W 0.2 <br />0.1 <br />0.0 <br />1991 1992 <br />b) TW-!0 (Deer Creek) <br />100 <br />BO <br />y 60 <br />.°J <br />40 <br />20 <br />0 <br />1993 1994 7995 1996 1997 <br />1986 7969 1999 1991 1992 1993 1994 7995 7996 1997 <br />7 <br />6 <br />6 <br />~ 4 <br />3 <br />1L <br />2 <br />1 <br />0 <br />SN X 91 t1JCCf I,TCGC) <br />1986 1969 1999 1991 1992 1993 1994 1995 1996 <br />Figure 9 Hydrographs of selected in-mine roof drips associated with faults in the <br />Deer Creek Mine. Modified after Mayo and Associates, 2001. <br />and a maximum thickness of 25 feet. An array of up-hole monitoring wells was installed <br />across the width of the channel. The wells were 15 to 25 feet deep and were open atong <br />their entire depth. Each well was equipped with a shutoff valve and pressure gauge. The <br />idea was to conduct a pump test by letting selected wells gravity drain and <br />simultaneously measuring pressure change in nearby wells. Because the maximum <br />Evaluation of Potential Groundwater Inflows 30 February 24, 2004 <br />Associated with E Seam Mining, <br />West Ells Mine, Somerset, Colorado <br />