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2010-06-01_PERMIT FILE - C1982056A
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2010-06-01_PERMIT FILE - C1982056A
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Last modified
8/24/2016 4:12:34 PM
Creation date
10/14/2010 10:11:24 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
6/1/2010
Doc Name
Pages 2.05-65 to 2.05-122.1
Section_Exhibit Name
2.05 Operation and Reclamation Plans Part 2
Media Type
D
Archive
Yes
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A maximum of approximately 1.0 million cubic yards of un- compacted refuse was previously permitted to be <br /> temporarily stockpiled in a surge pile at the south end of the refuse area on an area where the topsoil has been <br /> removed. Actual maximum placement in this area has been approximately 400,000 cubic yards and this volume <br /> has been reduced to approximately 80,000 cubic yards by dozing stockpiled material to an adjacent permanent <br /> refuse disposal area. Once the remaining stockpiled material is removed and placed in permanent disposal areas, <br /> TCC has no future plans to utilize this area for temporary stockpiling (other than the temporary winter stockpiling, <br /> as discussed below). Stockpiled materials are transferred, placed, and compacted on active portions of the refuse <br /> area. As the stockpiled material is moved and placed, during the summer construction season, any underlying <br /> spoil /sub -soil material will be recovered and placed on available completed refuse pile bench areas. During the <br /> winter, up to 300,000 cubic yards of material may be tail- dumped on active portions of the refuse pile for temporary <br /> storage. In the spring, once any frozen materials are thawed so that effective compaction can be achieved, the piles <br /> will be spread and compacted as the next lift on the active pile area(s). The pile will be constructed in 50 -foot <br /> benches, as originally planned, and drainage will be established off of the pile as presented in Exhibit 26A. <br /> 2) Vertical Construction — This segment has been clarified to remove the requirement to construct "A" and `B" <br /> segments as proposed in Exhibit 26A. The recommendation presented in Exhibit 26A -1 to compact the entire lift as <br /> one unit without dividing it into segments will be followed. This will increase the stability of the fill by removing <br /> the potential for establishing a slip plane between segments A & B. As noted in Exhibit 26A -1, the two - segment <br /> construction was for "zoned construction" and this is not required for smaller piles. <br /> 3) Temporary Road Construction — The temporary road within the CRDA footprint will be filled in with refuse <br /> material, as per the recommendation in Exhibit 26A -1, when it is no longer required. The recommendation <br /> includes benching and tying in with existing refuse pile to the north and south of this road. Final refuse placement <br /> activities in this area will require recovery and temporary stockpiling of clay cover materials in a nearby placement <br /> area, as shown on Exhibit 49S -M1. The temporary clay stockpile will be placed on an existing permanent excess <br /> overburden stockpile. A short segment of the existing light -use road (designated a permanent postmining road in <br /> Permit C -81 -071) will be widened to approximately 30 feet to accommodate two -way scraper traffic. Soil material <br /> will be stripped and stockpiled from stockpile and haulage areas prior to disturbance, and drainage control will be <br /> addressed by existing collection ditches and bench terraces on the excess spoil pile, which will route all drainage to <br /> the existing Sedimentation Pond D. The existing collection ditches and bench terraces, described in Exhibit 29, <br /> Draiange Control, and Exhibit 9, Excess Spoil, of Permit C -81 -071 as follows, were designed to effectively collect <br /> and convey all surface drainage from the excess overburden stockpile. <br /> Exhibit 29 (pg. Ex 29 - 36) — "The drainage systems on top of the excess spoil structures are described in detail <br /> in Exhibit 9, Excess Spoil, and consist of maintaining a gradient that will prevent the impoundment of water on <br /> the spoil, thereby minimizing possible leaching. These drainage systems will transmit water off the spoil in a <br /> manner that prevents erosion and TSS loading of surface water. This will be accomplished by maintaining an <br /> even and consistent gradient and by installing riprap or other energy dissipaters where necessary. All drainage <br /> from the surface of the spoil will be diverted away from the outslope of the fill. Exhibit. 9, page 27, <br /> Recommendation No. 11 addresses the drainage system on the top of the excess spoil piles. The intent of the <br /> recommendation is that the point of intersection of the outslope with the top of the fill be the highest portion of <br /> the excess spoil pile. As a result of the recommendation that the central portion of the fill be overbuilt <br /> approximately 5 percent, the water collecting on the top surface of the fill will flow to the edge of the fill and <br /> down the permanent diversion ditch. <br /> Exhibit 9 (n2.27) — <br /> 8. We recommend that diversion ditches be constructed around and uphill of all disposal areas. For Area 1, it <br /> appears that the most effective method would be to have a horseshoe - shaped drainage system with a high point <br /> near the highest elevation of the fill, with drainage occurring on the north side and the south side of the fill in <br /> natural materials. The drainage ditch on the south side of the fill should be substantially larger than on the <br /> north side to intercept drainage which might occur from the slope above the fill. <br /> TR09 -67 2.05 -97.1 05/16/09 <br />
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