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Zach Trujillo <br />- 4 - Jul 25, 2012 <br />the Allen Mine portal opening in order to gain approval from MSHA to construct the <br />proposed West DWDA. <br />NECC: Please see addendum to Exhibit 43 (old Exhibit 42). As previously mentioned, <br />Exhibit 42 has been renamed and will be resubmitted as Exhibit 43. <br />DRMS: Please include in the permit a discussion on how NECC plans to address the <br />rail slope as recommended by Agapito Associates, Inc. in Addendum to Exhibit 43. <br />NECC: Please see revised page 2.05 -44. <br />14. DRMS: The Division has calculated a bond estimate required to regrade and seed <br />the West DWDA footprint. The cost estimate calculated by the Division totals <br />$70,551.08 (see attached cost estimate) compared to NECC's cost estimate of <br />$104,253.16. The Division's estimate is consistent with previous cost estimates <br />approved by both the Division and NECC. If NECC wishes to use the cost estimate <br />calculated by the Division, please submit a revised estimate that matches the <br />estimate calculated by the Division. <br />NECC: Four culverts have been added as part of this adequacy response. Exhibit 28 <br />will be updated after DRMS generates a revised estimate including the four culverts. <br />DRMS: The Division has calculated a bond estimate required to regrade and seed the <br />West DWDA footprint and the addition of culverts. The cost estimate calculated by the <br />Division totals $71,394.73 (see attached estimate) compared to NECC's cost estimate <br />of $102,253.16. The Divisions estimate is consistent with previous cost estimates <br />approved by both the Division and NECC. If NECC wishes to use the cost estimate <br />calculated by the Division, please submit a revised estimate that matches the estimate <br />calculated by the Division. <br />NECC: Please see revised Exhibit 28, <br />Additional Items revised: <br />Response is sufficient <br />Sincerely, <br />Tamme Bishop, P.E. <br />Project Engineer <br />cc: Ron Thompson, NECC <br />Mike Trujillo, CDOW <br />