PERMFILE50460 - Laserfiche WebLink

Home Browse Search

Page 2 • • December 6, 1991 B. Keffelew Daniels Sand information An additional sheet is provided that is a copy of the notes given to the engineer regarding each pile. Many of the piles resting on relatively flat land had a rather obvious base elevation, but piles on slopes or otherwise situated needed to have their base elevations defined. This sheet provides guidance to the engineer in identifying the elevation above which to measure the volume and which defines the true shape of any particular pile. Two different plots of two different cross sections are also provided. These sections were taken along the same cross section lines that were used in the 1985 amendments to these operations. They show the topography as it existed at the time of the amendment, the estimated reclamation elevation, and the topography ae shown on the 1991 map. The location of each cross section is shown on the map. These cross sections provide information relevant to progress in reclaiming those portions of the pit west of Academy Boulevard. One of each of the cross sections shows the entire cross section while the other is an enlargement of the first 2000 feet of each cross section where the changes have been most evident since the amendments. Please note that these plots have a rather large vertical exaggeration. This was needed to show the often rather small deviations in elevation between the various lines. Without that exaggeration it would not have been possible to clearly distinguish the lines in many areas. A single plot oP Line A is provided which has very nearly a 1:1 vertical to horizontal scale and includes the entire length of the cross section. This plot shows what the natural elevation differences are. As you can tell from this information, progress ie being made in achieving the estimated reclamation topography. Hut a lot still needs to be done. It will probab],y take another 10 years or more before the topography on the west aide of Academy Boulevard is near the estimated reclamation topography. As stated throughout the 1985 amendments, this filling will largely be done through the use of sediment basins composed of waste material produced at the processing plant. Thus the filling will be done with material that will never have to be moved. For this reason the volume of material in the present sediment basins on the site were not included in the volume of material in stockpiles. The volume of a sediment basin, under this permitted plan, is irrelevant to the bond because essentially nothing will need to be done to them other than prepare the surface and revegetate them. The total volume of stockpiled material in the 37 identified piles on the site came to essentially 113,000 cubic yards. We do not know what you were including in your estimate of 3 million cubic yards, but we cannot find sufficient additional material that would be considered a stockpile of any kind that would raise the volume to anywhere near 3 million cubic yards. Even if all the small product stockpiles were included the total would not be more than about 120,000 cubic yards, maybe 130,000 if one was very generous in the definition of a stockpile.