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6.4.5 Exhibit E -Reclamation Plan <br />• 6.4.5.3 EAST PIT <br />The 10-15 acres of the east pit will be mined last. Overburden will be used as <br />necessary for the construction of berms for the south reservoir or removed from <br />the mine area and stockpiled south of the pit. Mining will occur from the west <br />end of the pit and proceed east with concurrent reclamation following the path of <br />the mining activity. <br />6.4.5.4 CONCURRENT BACKFILLING ADJACENT TO OIL AND GAS <br />STRUCTURES <br />Agreements between owners of oil and gas structures specify that mining can <br />occur as close as 10 feet from the centerline of well access roads that overlay oil <br />and gas pipelines and 75 feet from oil and gas wells as a temporary condition. <br />The mining operation will backfill areas adjacent to oil and gas facilities to a <br />distance of 20 ft from the centerline of roads that overlay oil and gas pipelines <br />and 150 ft from oil and gas wells as shown in Exhibit C -Mining Plan. Backfilling <br />adjacent to oil and gas structures will occur within two weeks following <br />excavation near oil and gas structures. Total volume of material needed to <br />backfill the area around the oil and gas structures is approximately 534,400 yd3. <br />6.4.5.5 SLOPE GRADING <br />• Both the north and south portions of the west pit will be reclaimed as water <br />storage ponds. The pit excavation (0.5:1 slopes) will be filled with overburden or <br />borrow materials to construct the ponds. All pond slopes will be graded no <br />steeper than 3H:1 V. Volumes to reclaim slopes are provided in Table 2 - <br />Reclamation Grading Volume Summary. <br />Table 2 -Reclamation Grading Volume Summary <br />Area [ftZj Volume [yds~J <br />West Pit <br />Overburden 4,636,600 1, 717, 300 <br />Berm Construction 4,636,600 2,222,900 <br />Deficit 505,600 <br />'Overexcavation (south pond) 2,183,400 536,200 <br />'Provides borrow material to make up the deficit of fill necessary for reclamation grading. <br />Area [ft2j Volume [ydssj <br />East Pit <br />Overburden 347,000 128,500 <br />Slope Reclamation 347,000 46,300 <br />Excess 82,200 <br />• <br />File Pit 112 DMG Permit Application <br />Page 8 of 27 <br />