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<br /> <br /> <br />zoo2 -19- <br />3.3 Ore Storage Area <br />003-2203 <br />Geomembrane installation activities for the OSA included deployment and seaming of 80-mil <br />single-sided textured LLDPE geomembrane, and non-destructive and destructive testing of <br />the geomembrane. Poly-Flex placed 80-mil single-sided textured LLDPE geomembrane <br />panels P-1 through P-470 (approximately 1,430,000 squaze feet [neatline]) on compacted and <br />approved SLF as part of the Phase 1Va Area. Record Drawing No. 5 in Appendix A presents <br />the OSA geomembrane panel layout. Ames anchored geomembrane at the upper limits of the <br />Phase IVa Area in an anchor trench a minimum of 3 feet deep by 2 feet wide. The 80-mil <br />LLDPE geomembrane tie-in panels overlapped the Phase I geomembrane panels a minimum <br />of 3 feet and were extrusion welded, as shown in Detail 3 of Construction Drawing No. 17. <br />3.4 Underground Workings <br />A summary of underground working remediation for Phase IVa is presented in Table 3. <br />Additional remediation details aze presented in Section 4.2.1. <br />i\00\2201\0900\CcNtepOB0P0012203.040D.0a]40bn.doc Golder Associates <br />