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Memo to Dave Berry <br />Bowie No. 2 Geotechnical Adequacy Responses <br />page 10 <br />Chimney Collapse Prediction <br />91. New Section 1.8, added to Exhibit 15 by BRL, addresses the possible <br />implications of near outcrop faulting for possible chimney collapse <br />occurrence. My earlier adequacy concern has been resolved by the <br />proposed amendment to Exhibit 15. <br />2.1 SUBSIDENCE IMPACTS -LAND USE <br />Paragraph 1 <br />BRL's amendment to page 18 of Exhibit 15, and the related mitigations <br />presented within the SUBSIDENCE HANDBOOK, acceptably resolve my <br />earlier adequacy concern regarding the potential land use effects of <br />subsidence. <br />2.2 SURFACE WATER <br />Paragraph 1 <br />BRL's proposal that "surface modifications of the surface drainage and <br />ponds could be made in cases of any occurrence of subsidence cracks", has <br />been supported by their amendment to the monitoring plan, which will <br />allow timely detection and implementation of the appropriate mitigative <br />techniques. <br />2.3 GROUND WATER <br />Paragraph 1 <br />The position of the applicant presented throughout the application is that <br />no significant water resources exist within the overburden or on the <br />surface of the permit area, and that no appropriated springs issue from <br />the affected area. BRL further believes that none of the water that issues <br />from the ephemeral drainages is appropriated. <br />