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Mayo and Assoclafes, LC <br />• 2.0 Analysis of Current Monitoring Plan and Recommended Changes <br />Wells and springs in the current monitoring plan are listed in Tables 1 a and 1 b, respectively. <br />The organization of springs in the table is somewhat different than the way they have been <br />traditionally listed in the Annual Hydrologic Reports. In Tables la and lb the springs are <br />listed in descending order according to lithology. This organizational scheme was selected <br />because it allows an evaluation of both individual springs and the overall effectiveness of the <br />monitoring plan in light of our understanding of the groundwater regimes and surface and <br />groundwater interactions in the West Elk Mine azea. Hydrographs of historical water level, <br />discharge rate and selected solute compositions of each currently monitored well and spring <br />are included in Appendix A. <br />• 2.1 Wells <br />Wells have been constructed to monitor water levels and the chemical chazacter of <br />groundwater beneath the lower refuse pile, in the Barren Member, in the F-, E-, and B-coal <br />seams, and in the Rollins Sandstone (Table 1 a). An analysis and recommendations regarding <br />each of these groups of wells are described below. <br />2.1.1 Refuse Pile Wells <br />Discussion: <br />The current monitoring plan includes wells GP-3, GP-4, GP-6 and GP-7. Periodic <br />reconstruction of the lower refuse pile has made it difficult to maintain historical continuity <br />of this set of wells. Currently 4 wells monitor groundwater in the vicinity of the lower refuse <br />Evaluation of the West Elk Mine Monitoring Plan <br />29 January 1999 <br />Page 3 <br />