2014-04-30_REVISION - C1996083 (2)

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William A. Bear Page 5 of 8 April 30, 2014 The discrepancy between the two versions of Map 32 that were submitted were based largely on the timing the map was submitted. Map 32 has been revised to show a replacement depth of topsoil on the Gob Pile #3 area of 1.5', which should be adequate for supporting the vegetation of cropland /pastureland. And, like the Gob Pile #2 area, nutrients or other soil amendments will be applied to redistributed topsoil if necessary to support plant nutrient requirements. Please note, area "F" of Map 32 has been changed to "F /F1" due to the configuration shown on Volume XI, Figure 1. Pile "F /F1" contains topsoil that will be replaced at the UTL area and also at Gob Pile #3. Also, 2' contours were removed from Gob Pile #2 area for consistency with the contour interval used on rest of map. DRMS 4130114: BRL's adequacy review response letter provides an explanation for the significant difference in the topsoil material that was projected to be salvaged in the Gob Pile #3 disturbed area. The revised pages 2 and 4 of Volume XI as well as revised Appendix A do not provide an explanation why less topsoil is available for reclamation than what was projected. Please revise pages 2 and 4 of Volume XI to include an explanation for the discrepancy in the predicted and actual topsoil salvage volume, as outlined in BRL's adequacy response letter. 7. DRMS: The previously approved topsoil replacement depth for the Gob Pile #1/ #2/ #4 disturbance area was 0.9'. BRL is proposing, on page 14 of Volume IX, to reduce the replacement depth to 0.5'. Please provide additional information, in accordance with Rules 2.05.4(2)(d) and 4.06.4(2)(a), to support this proposed reduction. BRL: The Operator believes they salvaged all topsoil that was available for salvage at the Gob Pile #2 area. It is noted in Appendix A that the topsoil depth available for salvage is estimated and likely different from in -field conditions. A 6" replacement depth of topsoil on the gob piles is marginal, however, nutrients or other soil amendments will be applied to redistributed topsoil if necessary to support plant nutrient requirements. Therefore, the Operator believes the proposed topsoil replacement depth proposed is in compliance with Rules 2.05.4(2)(d) and 4.06.4(2)(a) and (b) and that vegetation establishment will be consistent with the post mining land use of rangeland /wildlife habitat. DRMS 4130114: Please refer to DRMS comments on Item 5.b.ii, above.