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August 2002 -8- 003 -2203 <br />• 2.0 SUMMARY OF EARTHWORK CONSTRUCTION <br />Earthworks activities associated with the Phase Wa Area included the following: <br />► Underground workings remediation, including excavation, confirmatory <br />drilling, installation of CSB, FSB, CP, CR, and geogrid; <br />► Underdrain construction, including trench excavation; installation of UF, <br />SSF, and geosyntheties, and sump construction; <br />► Leak Detection system construction, including trench excavation; <br />installation of pipe, LDF, and geosyntheties; sump construction; <br />► Site grading, including cut/fill and blasting; <br />► Surface water diversion channel construction, CSP, and headwalls; <br />► Subgrade preparation; <br />► SLF installation, placement and compaction, depth verification testing, and <br />preparation of SLF surface for geomembrane deployment; <br />► OSA composite liner system installation, consisting of geomembrane and <br />SLF; and <br />► DCF placement over geomembrane. <br />Ames generally used the following equipment during construction: <br />► Caterpillar D6M Low Ground Pressure (LGP) Dozer; <br />► Caterpillar D7H LGP Dozer; <br />► Caterpillar D9R LGP Dozer; <br />► Caterpillar D8R Dozer; <br />► Caterpillar D9R Dozer; <br />► Caterpillar DlOM Dozer (2); <br />L 2031 04001CatRgMD2 10072203.0400.0474DW.dce Golder Associates <br />