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ft 12i ht and 7 Right Cross-Panel Entries Grout Back611 <br />• In order to mine through Ute 8 Right and 7 Ri ht cro - <br />grout. This operation will require topsoil salvage, con tructiontof a TCC <br />borehole taro the 7 Right main entry, a stockpile area for Fl Plans to backfill with acement-Flyash <br />will be used for operations associated with the backfill the g pad for drilling and grouting operations, ^ <br />yash, and the concrete contractor's equipment. The site <br />removed from the site for approximately Dire year. Equipment will be re- <br />mouths prior to the Iongtvall crossing of the 7 Right cross-panel en[r}•, [hen all equipment will he <br />area will be reclaimed after the 7 Right cross-panel entry is backfilled, mobthzed [o the site approximately three <br />Right cross-panel entry and this entry will be backfilled. The pad <br />Site preparation will require the striPPtng of a <br />stockpile within the site. The footprint of tha topsoil tstockpilecwell he alayburn loam to <br />crescent shape nn the east side of the site. A berm will be placed around the stockpile arPdoto soalpliacing it in a <br />placed on the stockpile to maintain separation from the pad area. The stockpipje willtbe temporarilybeededf evithrara <br />appropriate seed mixture to prevent loss of the resource. p pus will he <br />The proposed pad site will cover an area ofa <br />the SW I/4 of the S6 I/4 of S 21, T j N PProxrmately 2.5 acres on the north side of Routt Count}, Road 33 in <br />The ad will be used for drilling activities and grout pumping <br />operations. Gras.el will be placed in areas dtatbwill receive vehicular traffic in order to prevent excessive nttti^ of <br />the site. gpproxnnately g20• of four strand, barbed wire fence will be constructed around the perimeter of the site. <br />Access to [he site will be from either County Road 33 or fhe existing ranch road. U g <br />will be used at these access points to direct off-site drainage along the county road and ranch road. <br />with the largest drainage area was designed based on rite I p to four temporary culverts <br />diameter. On-site drainage will be directed to a perimeter bermeand ditch then off site ttltroughrtrock Pitl[estrand <br />across vegetative filtering to Foidel Creek, <br />Mud pits will be required for the cuttings from the drilling operations and washdown of the concrete hatching plant <br />area. Three 20' x 20' s 6' deep pits are planned with a 2' high safety berm around the perimeter. Approximately <br />200 cubic yards of material from this excavation will be stockpiled immediately adjacent to the pits with the <br />remainder of excavated material being used for the construction of the safety berm. U to 35 cubic <br />cuttings will be placed in the mud pits. Excess capacity is provided to collect drainage from washdown, storage of <br />water, and emergency grout storage for [he concrete hatching operation. The pits will remain until theaids of <br />regraded for reclamation. <br />e is <br />Two concrete pads are proposed to be poured at the site, A concrete pad will be built for the mobile concrete batch <br />plant and pumping station chat will be approximately 130 feet by 70 feet and 6 inches thick. A concrete pad with <br />approximate dimensions of 80 feet b 40 feet b <br />loading flyash to prevent contamination of this material with mud or gravel, <br />Y 6 inches thick is planned for the area where the trucks will otl~ <br />A borehole will be drilled into the 7 Right main entries for pumping of the grout into the cross-panel entries. <br />Cover above the coal seam in this area is approximately 1,200 feet. The finished hole will be full <br />inch inside diameter steel pipe. Communications and the grout feed line will be installed to the underground <br />workings dtrough this borehole. When the operation is complete, the hole will be Y °routed to G %,- <br />grout and the casing cut offa minimum of 3 feet below grade. <br />plugged to the surface with <br />Flyash will be delivered to [he site via belly-dump and/or end-dam <br />p trucks from either [he Hayden or Craig power <br />. plant. Up to 20,000 cubic yards of Flyash will be used for each of the backfill operations. The storage pile <br />airborne emissions, <br />dimensions will he approximately 140 fee[ by 80 fee[. The Flyash stockpile will be sprayed with water (p reduce <br />t•9 R 9 7- I ja <br />2.05-62 <br />Revised 9/9/97 <br />