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2010-06-04_PERMIT FILE - C1982056A (9)
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2010-06-04_PERMIT FILE - C1982056A (9)
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Last modified
8/24/2016 4:12:47 PM
Creation date
10/14/2010 10:11:14 AM
Metadata
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Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
6/4/2010
Doc Name
Pages 2.05-1 to 2.05-64
Section_Exhibit Name
2.05 Operation and Reclamation Plans
Media Type
D
Archive
Yes
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The tunnel also includes a 36 -inch buried corrugated steel pipe escape tube extending from the tunnel <br />approximately 50 feet to the south. One cubic yard of concrete was required at the point where the escape tube <br />daylights. A 150 -foot long 36 -inch conveyor extends from within the tunnel to discharge directly into the stoker <br />trucks. Two cubic yards of concrete were required for a pad to support the conveyor structure. An MCC building <br />was constructed near the escape tube exit. Dimensions of this building are approximately 15 x 15 feet, with a <br />concrete floor requiring approximately 2 cubic yards of concrete. A retaining wall was constructed on the north <br />side of the existing pile. The wall required 6 steel piles driven to a depth of 25 feet, with treated wood cribs placed <br />between the piles to form the wall. On completion, this wall was approximately 50 feet long and up to 12 feet high. <br />Haulroad B -2 was widened by approximately 20 feet to allow for a loading area with room for traffic to pass trucks <br />that are loading. The emergency spillway elevation of Pond E was staked and the toe of the fill does not extend <br />past this line, to assure that no storage capacity is lost. Topsoil was stripped, salvaged, and stockpiled on the <br />topsoil stockpile east of Pond E where the haulroad widening extended below the west of the pond embankment. <br />No construction occurred within a buffer zone of 100 feet from Foidel Creek. Silt fences, hay bales, rock filters, or <br />a combination of these control measures were used, as required, to prevent sediment from washing into Foidel <br />Creek from the new fill material or road section. Reclamation associated with these additions will occur when the <br />Washplant facility is dismantled. The concrete will be broken up and disposed of on -site. The steel associated with <br />these additions will be either salvaged or disposed of on -site. <br />Stoker Coal Handling System Modifications (TR08 -65) <br />With construction and commissioning of the new washplant (Washplant II) coal processing is shifting to the new, <br />and more efficient, washplant. As a result, TCC proposes to construct and operate a stoker coal conveyor from the <br />new washplant to the existing Stoker Coal Self - Loading System. The Washplant II Stoker Coal Conveyor will <br />consist of a 50 -foot long, 30 -inch coal transfer conveyor, installed on the second level of the new washplant (feed <br />chute -work was installed at the time of initial construction), a 190 -foot long, 30 -inch elevated conveyor from the <br />end of the transfer conveyor to top of the existing coal stoker stockpile, an 8 -foot wide elevated conveyor support <br />truss structure with walkway, three conveyor bents on poured support piers, and the associated conveyor drive units <br />and take -ups. The highest support bent will be approximately 65 feet high (drop- cables to support conveyor truss), <br />and the conveyor discharge point will be approximately 40 feet above grade. Support piers will be drilled <br />reinforced concrete piers, 36 inches in diameter and approximately 20 feet deep. Conveyors will have full covers <br />for dust control. <br />To facilitate more efficient truck movements and loading, the existing stoker reclaim conveyor will be extended <br />approximately 20 feet, the truck loading area (includes a segment of Haulroad B -2) will be widened approximately <br />15 feet on the north side, and a 15 x 100 foot concrete pad will be poured under the loading chute. Extension of the <br />reclaim conveyor and widening of the truck loading area will allow trucks to load and complete a full circle turn in <br />the loading area, eliminating operational and safety concerns associated with truck backing and re- positioning in <br />the loading area. Widening of the truck loading area will require soil material recovery from the expansion foot- <br />print (approximately 120 cubic yards to Stockpile PPSP -1), relocation of one powerpole, and expansion of the <br />existing engineered road fill to the north (approximately 1,800 cubic yards of compacted suitable fill), encroaching <br />on the existing Foidel Creek stream buffer zone variance area. This minor incremental disturbance will not cause <br />or contribute to violation of water quality standards or adversely impact water quality or quantity in Foidel Creek. <br />The proposed Stoker Coal Handling System modifications are shown on Map 24 (Sheet 1 of 3) and by the design <br />drawings provided in Exhibit 49Q. <br />Prior to, during, and following vegetative stabilization of the extended road fills, ASC's, consisting of silt fencing <br />or straw wattles, will be installed and maintained along the toe of the extended fills to minimize erosion and help <br />keep sediment out of Foidel Creek. The fill outslope and crest will be stabilized by seeding with the Pastureland <br />Seed Mixture. As previously described, reclamation of the Stoker Coal Handling Modifications will occur when <br />• the Washplant facility is dismantled. Equipment and steel will be either salvaged or disposed of on -site, and <br />concrete piers will be broken up and disposed of on -site. <br />TR08 -65 2.05 -32 07/08/08 <br />
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