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October 2004 -35- 043 -2170 <br />• <br />6.2 Leak Detection Trencli and Underdrain Geosynthetics <br />Conformance testing for 40 -mil smooth LLDPE geomembrane used to construct the LDTs is <br />presented in Appendix K -1. The inventory control log for LDT geomembrane is presented in <br />Appendix J -1. Conformance testing for the 40 -mil LLDPE used for Phase We OSA construction met <br />specifications. Geomembrane in the LDTs was extrusion welded. Golder monitored trial seams, as <br />described in Section 6.1.3.1. <br />Twelve -ouncc non -woven geotextile was placed in the LDTs and UDs. Geotextile in LDTs and UDs <br />was placed with a minimum overlap of 1 foot. Geotextile quality control certificates are presented in <br />Appendix J -6. <br />6.3 Underground Workings Geosyntbetics <br />Quality Control certifications provided for the geogrid is presented in Appendix L -1. Conformance <br />testing results performed on geogrid used in the remediation of the underground workings within the <br />footprint of the OSA are presented in Appendix L -2. Golder monitored geogrid installation, <br />including construction of proper connections by use of bodkin bars. Conformance testing for geogrid <br />used for Phase IVc OSA construction met specifications. <br />• <br />L• to+ u190101OO1Cc sY- QAPEIVc- 1OP11WS170.a00. 124MC -Vh Va000 Golder Associates <br />