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Zach Trujillo 3 July 9, 2012 <br />10. Please provide an updated Map 11 -Sheet 1 to include the temporary DWDA and all other <br />changes from MR -117. <br />NECC - Enclosed is an updated Map 11 -Sheet 1. <br />11. Please provide an updated Map 11 -Sheet 3 to include the truck loading system, new fan <br />system, the temporary DWDA and all other changes from MR -113 and MR -117. <br />12. As per Rule 4.11.3 and 2.05.3, plans to return coal mine waste to abandoned workings must <br />include submittals for the approval of both the Division and the Mine Safety and Health <br />Administration. Please provide MSHA with all information required for their approval. <br />13. The Division has performed a cost estimate for sealing the shaft and re- grading the <br />containment area. The total value of this estimate is $210,617.61 (see attached cost <br />estimate) compared to NECC's cost estimate of $100,822.08. The Division's cost estimate <br />is consistent with previous cost estimates approved by both the Division and NECC. <br />Please submit a revised cost estimate that is in line with the estimate calculated by the <br />Division. <br />Sincerely, <br />NECC - Enclosed is an updated Map 11 -Sheet 3. <br />NECC - MSHA will be provided all information necessary for their approval to return coal <br />mine waste to abandoned working. <br />NECC - The DMRS' $210,617.61 cost estimate is acceptable. Enclosed is revised Exhibit <br />28. <br />J. .Stover, P.E. <br />Consulting Engineer <br />cc: Ron Thompson, NECC <br />Mike Trujillo, CDOW <br />Attachments: <br />TR -64 Adequacy Response No. 1 dated July 9, 2012 <br />TR -64 Pages 2.05 -54 -55 dated July 9, 2012. <br />TR -64 Table 20 Ditch Data, page 2.05-11 a dated July 9, 2012 <br />TR -64 Page EXH 19(21) -2 dated July 5, 2012 <br />TR -64 Exhibit 28 Bond Estimate dated July 9, 2012, <br />TR -64 Map 11 Sheet 1 revised dated July 9, 2012 <br />TR -64 Map 11 Sheet 3 revised dated July 9, 2012 <br />