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n~ •! ~~ <br />Memo to Matt <br />Mt. Gunnison <br />page 2 <br />Hayes <br />No. 1 Mid-Term <br />Subsidence Control and Monitoring <br />The applicant has faithfully and appropriately submitted semi-annual <br />subsidence monitoring reports. In fact, I have commended them on several <br />occasions for the quality of their monitoring effort. The amended test panel <br />1W-1 S, has been retreat mined and subsidence monitoring has verified the <br />affects of subsidence. The applicant intends to reuse these same monitoring <br />monuments fora superimposed test panel in the underlying C-Seam. The <br />applicant's original mechanical ground movement projections have proven <br />conservative. In addition, a monitoring well installed above the test panel <br />has determined that impacts upon ground water were transient, as predicted. <br />The water table in the undermined well initially declined and then rebounded, <br />showing little long term affect from ground subsidence. <br />For the purposes of your findings document, the appropriate map reference for <br />depiction of subsidence monuments installed above Panel 1W-1S is Figure 13 in <br />Exhibit 3.4.8.A. <br />cc: Sue Mowry <br />JP/jP <br />