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• <br /> <br />ameO <br />4.2.6.3 Depth Verification <br />Ames drilled a total of eighty-eight holes in the compacted SLF to verify that the minimum <br />12-inch compacted depth had been achieved. AMEC monitored the SLF depth verification <br />tests and documented results. Depth verification holes were filled with bentonite chips and <br />water, as specified. All of the holes drilled into the SLF had compacted depths greater than <br />12 inches. The testing frequency of 2.2 holes per acre exceeded the minimum specified <br />testing frequency of two measurements per acre. The Soil Liner Fill depth verification <br />results are presented in Table 17. <br />4.2.7 Bedding Fill <br />Bedding fill was not used during the construction of the 2010 Phase 5 VLF. <br />4.2.8 Low Volume Solution Collection Fill <br />AMEC provided visual monitoring of LVSCF placement. One AMEC monitor and at least <br />two Ames laborers were present monitoring each dozer, unless two dozers were within <br />approximately 50 feet of each other during LVSCF placement. AMEC verified that wrinkles <br />in the geomembrane did not fold over, that PVC grade markers were placed on a maximum <br />50-foot by 50-foot grid and at grade breaks, and that all material in the fill was suitable. <br />AMEC continuously inspected geomembrane during LVSCF placement, marked areas on <br />the geomembrane liner for repair, if required, and verified that all repairs were completed. <br />After final grading, AMEC monitored removal of PVC grade markers. <br />4.2.8.1 Moisture-Density Test Results <br />AMEC performed a total of six in-place moisture-density tests of LVSCF. AMEC compared <br />results of the field moisture content and density tests to the Proctor dry density and optimum <br />moisture content values of material with similar gradation. Proctor dry density and optimum <br />moisture content values for samples with greater than ten percent plus three-quarter-inch <br />material were corrected according to ASTM D4718 to facilitate direct comparison to nuclear <br />• <br />AMEC Earth & Environmental, Inc. <br />2000 S. Colorado Blvd 2-1000 <br />Denver, CO 80222 <br />Tel 303-935-6505 <br />Fax 303-935-6575 www.amec.com 35