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Page 16 <br /> 6.4.12 EXHIBIT L - Reclamation Costs <br /> GRADING: <br /> As stated above, Raptor conservatively estimates for Financial Warranty purposes an <br /> approximately 4,020-foot wall excavated at 2H:1V and a 2,180-foot wall at 1.25:1V slopes <br /> along the extraction limits flanking WCR 396; and 2H:1V along the South Platte River <br /> levee, as shown on Exhibit D: Extraction Plan, and Exhibit L: Financial Warranty Map. <br /> Actual volume of fill required to grade at 3H:1V for a respective cut slope is determined <br /> in the graphics, below. Square Foot volume of backfill x linear feet of slope divided by <br /> 27 will yield the required cubic yards needed for each section of highwall. A rate per <br /> Loose Cubic Yard of fill taken from the previously approved values determined by the <br /> OMLR, is used to better ensure the integrity of the resulting values. <br /> DAGRAM I .- <br /> 3H: 1 <br /> FINISHED <br /> 40,0'± GRADE <br /> d e p t h. `° <br /> FILL TO GRADE = 800 SQ. FT. <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 />