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Page 18 <br /> 6.4.12 EXHIBIT L - Reclamation Costs <br /> To estimate the area involved in resoiling the Center Section of Central Field — we'll use <br /> a percentage of the total perimeter length of the extraction limits involved: <br /> 14,311 Total perimeter length Central Field <br /> 6,200 External perimeter length Center—Central Field—extraction limits <br /> 4,610 Internal perimeter length on core area <br /> 10,810 Combined perimeter length <br /> 10,810 - 14,311 = 76% <br /> 11.19 acres x 76% = 8.5± acres requiring resoiling and revegetation (see Establishment <br /> of Vegetation over Affected Lands, below. <br /> At a depth of 0.5± feet, total volume = 8.5± acres x 0.5± feet of soil replacement, is: <br /> 8.5± acres x 43,560.0± sq.ft./acre - 27 cu.ft./cu.yd. = 6,857± cu.yds. @ 0.5' depth. <br /> The majority of soil placement can occur using the average placement distance of 600 <br /> ft., or less along embankments, (utilizing the same assumptions utilized at either Kurtz <br /> or Heintzelman Projects). <br /> 6,857± cu.yds of soil demand <br /> x $ 0.843 per LCY. <br /> $ 5,780.17to replace 0.5± feet of soil over the existing affected lands remaining above <br /> the anticipated final water level at the Center of Central Field along the <br /> perimeter cut slopes at the extraction limits. <br /> 3Although Raptor does not anticipate the areas of soil replacement to be extensively <br /> compacted, an allowance for disking or scarifying 25% of the area at a cost of$28.5/acre. <br /> 8.5± acres x 25% x $28.50/acre = $60.60 <br /> The processing area will also require soil replacement over the entire 21.35 acre area. <br /> 21.35± acres x 43,560.0± sq.ft./acre - 27 cu.ft./cu.yd. = 17,222± cu.yds. @ 0.5'depth. <br /> 17,222± cu.yds of soil demand <br /> x $ 0.843 per LCY. <br /> $ 14,518.43 to replace 0.5±feet of soil over the existing affected lands in the processing <br /> area. <br /> s Adequacy Item 52 <br /> VARRA COMPANIES, INC. TWO RIVERS SAND GRAVEL AND RESERVOIR PROJECT MARCH 2O22 <br /> A REGULAR IMPACT[1121 CONSTRUCTION PERMIT APPLICATION-COLORADO DIVISION OF RECLAMATION MINING&SAFETY <br /> OFFICE OF MINED LAND RECLAMATION <br />