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Memo to Mike Boulay <br />MCC TR SO -Response to Comments #20 & #21 <br />page 2 <br />Therefore. I recommend that the Division accept MCC's response to Comments #20 8 #21 with <br />the following condition. MCC shall monitor soil moisture conditions and slope stability within <br />the area of concern, in order to verify W WE's conceptual assumptions and conclusions. At a <br />minimum I recommend MCC be required to conduct the following monitoring: <br />(1) Flow from the Bear Mine #3 and Edwards mine portals. <br />(2) Quantitative monitoring of several slope stability monument profile lines extending <br />downslope from the Bear No. 3 and Edwards mine portal benches. <br />(3) Subjective annual visual (aerial or oblique) monitoring of slope instability, compiled on <br />figures similar to Figures 3 and 4 in MCC's response. <br />(4) An annual interpretive report summarizing the previous year's monitoring and it's <br />consistency with WWE's conceptual assumptions and evaluative conclusions presented <br />in MCC's response to Comments #20 and #21. <br />In this manner MCC can demonstrate the accuracy of it's assumptions and conclusions regarding <br />the potential impacts of B Seam sumping upon the stability of the colluvial slopes below the B <br />Seam subcrop. <br />cc: Dave Berry <br />doc: M:\COALUAP\MTG1TR80.WPD <br />JPlJP <br />