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August 2002 -36- 003-2203 <br />- Observation and documentation of non-destructive pressure testing of <br />fusion seams and vacuum testing of extrusion seams and repairs. <br />The following sections present a detailed description of each of the above activities. <br />6.1.1 Conformance Testing <br />Geomembrane manufactured by Poly-Flex was installed in the OSA. A Golder <br />representative performed geomembrane conformance sampling at the Poly-Flex plant in <br />Grand Prairie, Texas. Samples were sent to Golder's geosynthetic laboratory in Duluth, <br />Georgia, for conformance testing. Geomembrane rolls were not used on the project unless <br />approved by Golder based on conformance test results. <br />~ Prior to 80-mil single-sided textured and 40-mil smooth geomembrane arrival to site, Golder <br />. performed 18 conformance tests at a frequency of one test per 126,638 square feet, exceeding <br />the minimum specified testing frequencies of one test per 150,000 squaze feet. One of the <br />conformance tests failed to meet the average thickness requirement of 80 mils. Golder <br />conducted additional conformance testing to bound the failing sample. The failing rolls were <br />rejected and not delivered to the project site. Conformance testing for the 80-mil single-sided <br />texture LLDPE used for Phase IVa construction met specifications. Results are presented in <br />Appendix K-1. <br />6.1.2 Deployment Monitoring <br />Geomembrane panel deployment monitoring performed by Golder included: <br />- Observation of panel surface condition and panel overlap; <br />- Assignment of panel numbers; <br />n <br />U <br />~wo~zzo3~ogoo~arca~osoz~oouza3.oaoo.oa~aom m~ Golder AsSOClateS <br />