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Page 17 <br /> 6.4.12 EXHIBIT L - Reclamation Costs <br /> 2,180± lin.ft. (extraction front and side slopes) x 1,400.00± sq.ft. = 113,037± LCY <br /> 113,037± LCY <br /> x $ 0.56± per LCY. <br /> $ 63,300.74± fill along an 2,180-foot extraction front cut at 1.25HAV. <br /> Assuming a mean depth of advancing cut of 2:iV at the extraction limits of 40.0± feet <br /> depth: <br /> 4,020± lin.ft. (extraction front and side slopes) x 800.00± sq.ft. (required fill — Diagram <br /> 1, above) = 119,111± LCY <br /> 119,111± LCY <br /> x $ 0.56± per LCY. <br /> $ 66,702.22 Sub Total-Grading to 3HAV along an 4,020-foot extraction front cut at 2HAV <br /> $ 63,300.74Sub Total-Grading to 3HAV along an 2,180-foot extraction front cut at 1.25HAV. <br /> + $ 66,702.22 Sub Total-Grading to 3HAV along an 4,020-foot extraction front cut at 2HAV. <br /> $130,002.96 Total — Initial Grading. <br /> Liner Installation: <br /> Raptor has made allowance for liner installation on the regraded slope. Assumptions are <br /> that a 4-foot-thick liner will be keyed into bedrock at the base of the regraded slope and <br /> up the slope to approximately 5-foot below the original surface elevation. It is further <br /> assumed that the interior wall of the regraded core area will be of similar length to the <br /> external wall. The keyway dimensions in bedrock are assumed to be 4x4-foot. <br /> Perimeter liner at 10,810 lin.ft. x III sq.ft./ft x 4 ft. / 27 = 177,252 CY of liner placed <br /> at an estimated cost of $2.20/CY = $ 389,953.34. <br /> Keyway at the base of the 3:1 slope is estimated at 9,500 lin.ft. x 16 sq.ft./ft/ 27 = 5,630 <br /> CY of liner placed an estimated cost of $2.20/CY = $12,385.19. <br /> $ 402,338.53 Total Liner Installation Cost <br /> Soil Demand AND Re-soiling of Affected Lands (refer to Exhibit D): <br /> Soil demand is limited to the cut basin slopes remaining above the static water level. For <br /> Central Field, the total area above the anticipated static water level of the basins is 11.19 <br /> ± acres. <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 />