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June 24, 2003 -14- 003-2203.7 <br />• area met specifications. The SLF depth verification is discussed in Section 4.2.6.3. SLF was <br />moisture-conditioned and compacted as needed to meet project specifications. The minimum SLF <br />density was 95 percent of the maximum dry density at 3 percent dry of optimum to optimum moisture <br />content as determined by standard Proctor tests performed by Golder. Areas of the SLF that initially <br />failed to meet the moisture-density requirement were moisture-conditioned, if necessary, and <br />re-compacted to achieve the required compaction. <br />Prior to geomembrane deployment on the SLF, Ames proof-rolled, compacted, and hand-worked the <br />fill surface to be free of desiccation cracks and abrupt grade changes. Golder then inspected the <br />surface. Sharp or angular stones greater than 0.75 inches in diameter were removed from the finished <br />surface. Golder approved fill surfaces prior to release to Poly-Flex for deployment. Poly-Flex <br />provided formal subgrade approval prior to geomembrane deployment. Poly-Flex's subgrade <br />acceptance forms are presented in Appendix G. <br />2.7 Beddiug Fill <br />• Based on neat-line survey, Ames placed and compacted approximately 12,156 cubic yards of BF in <br />the Phase IVb PSSA. Record Drawing No. 5 in Appendix A presents the as-built surface of the BF. <br />Ames processed the BF for the Phase IVb PSSA construction, beginning in April 2002 and finishing <br />in September 2002. Ames processed the borrow material through a crusher mill and screening plant <br />and temporarily stockpiled the BF material at their crusher yard for haulage. <br />Ames began placing BF on the Phase III ore slope in September 2002 and completed BF placement in <br />May 2003. BF was compacted to a minimum thickness of 12 inches by a smooth-drum vibratory <br />compactor. BF was compacted as needed to meet project specifications. <br />Prior to geomembrane deployment on the BF, Ames proof-rolled, compacted, and hand-worked the <br />fill surface to be free of abrupt grade changes. Golder then inspected the surface. Oversize and <br />deleterious material were removed by Ames. Golder approved the Bedding Fill surface prior to <br />release to Poly-Flex. Poly-Flex provided formal subgrade approval prior to geomembrane <br />deployment. Poly-Flex's subgrade acceptance forms are presented in Appendix G. <br />• <br />1:\00\2301\0400\FOIC<nP55A0603\OOJ330J.P100.OlYURep.dac Golder ASSOC12t05 <br />