2005-03-14_REVISION - M1977315 - Laserfiche WebLink

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Mr. Tom Schreiner RE: Bestway Paving Pit #1 Technical Revision March 10, 2005 Page 2 of 3 Following a site. inspection by the Division on December 4, 2002, Revision SR-003 (March 25; 2003)- released additional area of the site from reclamation responsibility. The request for the release followed the inspection report, which stated that the operator would qualify for a release of reclamation responsibility for all pit walls that had been graded to a 3H:1 V slope, topsoiled, and revegetated and all pit floor azeas that had been topsoiled and revegetated. Revision SR-003 included the release of nearly 30 acres of the southern portion of the site (see attached Reclamation Plan). At the time of the 2002 inspectian, the remaining northern 28 acres of the site was being used for light industrial activity, consistent with the intended final land use for the site. The majority of the pit floor included in the 28 acres was covered with a layer of fine gravel and also contained some product stockpiles. Although this type of reclamation supports the final land use of industrial activity, the approved Reclamation Plan for the site specifies reclaiming all areas (pit floor and slopes) with topsoil and vegetation. From afollow-up site inspection performed by the Division on December 20, 2004, this issue was addressed. The inspection report states that the current Reclamation Plan specifies that a grass cover will be established after final grading, however, the Division is willing to consider other methods for stabilization of these azeas. provided they aze consistent with the post-mining land use. This technical revision proposes to include additional stabilization techniques for final reclamation of the remaining 28 acres at the Pit No. 1 site. Structures on the site currently support the industrial activities and are likely to remain for the fmal land use. Material stockpiles (topsoil, overburden, recycled asphalt) are also located on the site and support the current light industrial activities. If not in use, stockpiles may be seeded with a vegetative cover or stabilized by other methods. Areas of the pit floor expected to receive truck or other vehicle traffic, storage, or maintenance will be covered with a 2-inch layer of gravel (minimum size of/< inch). The gravel cover may also contain fines to aid with compaction of the material, but the material will be placed and finished so that fines will not create excessive amounts of dust in the air or suspended sediments in stormwater run-off. The majority of slopes remaining in,the 28 acres have already been graded to at least 3H:1 V and revegetated consistent with the currently approved Reclamation Plan. Other pit slope azeas, however, may be stabilized-with material similar to the gravel used for the pit floor stabilization. These areas will not receive vehicle traffic, but storage of materials on the slopes may restrict vegetation growth and increase the possibility of soil erosion. The azeas identified will be graded to 3H:1 V slopes or flatter and shaped to prevent stormwater run-on and reduce the potential for erosion. Additionally, this technical revision proposes the elimination of the groundwater pond on the site. There will be no permanent exposure of groundwater on the site. The proposed reclamation activities aze not expected to significantly change the overall reclamation plan or final land use and, therefore, we believe that the existing bond is adequate to cover the proposed reclamation activities.