2009-10-05_REVISION - C1996083 (2)

Home Browse Search

J. J. Dudash -3- October 01, 2009 BRL - Page 5 of Volume IV has been revised to direct the reader to the location where new design information can be found. In addition as part of TR-43 page 13i was added to Volume IV to direct the reader to the correct volume for updated design information. The Operator chose to not delete pages from the Original Westec report as too much historical information would be lost. 10. DRMS - The operator is proposing to increase the size of Gob Pile #4 by increasing its maximum height, lowering the elevation where it starts and increasing its acreage. Based on cross-section D-D', the maximum height of the pile is being increased from 6,230' to 6,235' and the starting elevation of the pile is being decreased from 6,110' to 6,080'. As a result of these elevation changes, the area of the pile is being expanded to the north and the south. Based on the Division's digitizing, the area of Gob Piles #1 and #4 (taken together because they converge) increased from 10.3 acres to 11.3 acres. The increases in area extend into what appears to be undisturbed lands both above and below Gob Pile #4. BRL has not included any detail regarding the topsoil and subsoil stripping that will be required in this undisturbed area. Detailed information regarding the increased area and the volumes of topsoil and subsoil that will need to be salvaged will be required. BRL - Revised Appendix A is attached. The area for Gob Pile #4 is 10.1 acres, and the area of remaining Gob Pile #1 is 1.1 acres, for a total pile area of 11.2 acres, which corresponds to what the DRMS has determined. Based on information in Volume IV, the Operator salvaged topsoil for the entire 2.7 acres associated with the original design for Gob Pile #1. This salvage number is now shown on Appendix A. Although the new Gob Pile #4 boundary extends into areas above and below the original Gob Pile boundary, no new topsoil or coverfill has been salvaged as part of TR-64, so what is approved in Appendix A (in addition to the newly added salvage volume for Gob Pile #1) is what the Operator assumes will be available for distribution during reclamation. 11. DRMS - Based on the increased maximum elevation, starting elevation and area noted in question 1 above and the increase in capacity of Gob Pile #4 (from 300,000 cubic yards to 450,000 cubic yards; Volume IX, Page 4) the surface area of the pile will necessarily increase. This increase in area will require additional subsoil and topsoil to properly cover the pile. Please recalculate the volumes of subsoil and topsoil that will be required to cover the pile with the required depth (three feet of subsoil and one foot of topsoil). BRL -Please see revised Appendix A and the explanation in #10. In addition, approved Appendix A shows a topsoil replacement depth of 1.2'. In order to have enough topsoil for reclamation, the replacement depth of topsoil has been changed to 0.9 feet, with 3.1 feet of coverfill. 12. DRMS - Based on the Division's digitized areas of Gob Piles #1 and #4, which have increased by approximately 1 acre, the operator's description of the disturbance in the second paragraph on Page 11 of Volume IX will need to be