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the second paragraph on Page 11 of Volume IX will need to be changed. The <br />operator states that the gob piles cover approximately 34 acres and the topsoil <br />piles cover approximately 2.3 acres. The increase in the area of Gob Piles #1 and <br />#4 (of approximately 1 acre) and any changes to the area of the topsoil stockpile <br />by Gob Pile #4 will need to be accounted for in these totals. These numbers will <br />need to be changed accordingly to account for the changes in the configuration of <br />Gob Pile #4. <br />4. Based on the Division's calculation that the area of Gob Piles #1 and #4 increased <br />by approximately 1 acre, and based on BRL's statement that 36.3 acres require <br />reclamation (Volume IX, Page 11), the Division believes that there may be a <br />topsoil deficiency for final reclamation of the gob piles and associated areas. <br />BRL states that one foot of topsoil will be placed over three feet of subsoil for <br />final reclamation (Volume IX, Page 11, first paragraph). BRL also states that <br />there is approximately 56,900 cubic yards of topsoil for reclamation. The <br />Division believes that with the increased size of Gob Piles #1 and #4, there are <br />37.3 acres requiring reclamation. For a flat area the topsoil required to cover <br />these areas to a depth of one foot is 60,200 cubic yards, a deficiency of 3,300 <br />cubic yards (or 0.7 inches). The surface area for the 3:1 and 2.5:1 slopes of the <br />gob piles will be greater than the flat area of 37.3 acres, leading to a greater <br />topsoil deficiency. Please review the topsoil balance for the gob piles and <br />associated areas and revise the topsoil replacement plan as necessary. Note, there <br />does not appear to be a problem with the subsoil for the gob piles and associated <br />areas as there is an excess of almost 40,000 cubic yards of material. <br />Based on a review of proposed Maps 15-3, Sheet 3 of 4, Mine Facilities and <br />Volume IX, Figure 1, Coal Mine Waste Disposal Area, there appears to be a <br />possible increase in the disturbed area of the mine. There is an undisturbed area <br />that is surrounded on the west by Gob Pile #1, on the east and south by topsoil <br />stockpiles and on the north by Gob Pile #4. The expansion of Gob Pile #4 to the <br />south (to the lower elevation) pushes into this undisturbed area. The Division <br />digitized this area and found that it decreased from 1.65 acres to 1.05 acres. <br />Additionally, there is a small area to the north of Gob Pile 94 where the pile has <br />pushed into the undisturbed land above (as the piles maximum height increases <br />and its shape changes from an angular one to a more rounded one). Please review <br />the changes to the pile as they relate to the surrounding undisturbed lands and <br />update the revision application to reflect any changes as necessary. <br />6. Based on a review of Volume IX, Figure 1, Coal Mine Waste Disposal Area, the <br />horizontal scale of the inset cross-section B-B' has been changed and appears to <br />be in error. The horizontal scale on the currently approved figure is shown as 40 <br />feet/inch. The horizontal scale on the revised figure is shown as 100 feet/inch. <br />This changes the length of the cross section from 600 feet to 1,500 feet. To <br />further complicate the issue, based on the scale of the small map showing the gob <br />piles, at 200 feet/inch, cross-section B-B' is only 300 feet long (1-%2 inches). <br />Based on the 2:1 slope indicator on the "Proposed Ground Surface" line for cross-