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August 2002 -41- 003 -2203 <br />Poly -Flex constructed approximately 76,812 lineal feet of fusion welded seams, and <br />1,849 lineal feet of extrusion welded seams. The specified frequency of destructive testing was <br />one test per 500 lineal feet of weld. Golder identified and Poly -Flex obtained destructive <br />samples from the geomembrane panel seams at a frequency of one destructive test sample per <br />468 lineal feet of fusion welded seams, and one per 205 lineal feet of extrusion welded seams. <br />The test frequency exceeded project requirements. <br />Field destructive testing of seams consisted of testing ten 1 -inch wide coupons, five of which <br />were tested for peel, and five of which were tested for shear. Poly -Flex tested the inside and <br />outside tracks of the fusion welds for peel. Poly -Flex performed all destructive tests on -site <br />using a field tensiometer, and Golder observed and documented all tests. <br />The specified acceptance criteria for 80 -mil single -sided textured LLDPE to single -sided <br />textured 80 -mil single -sided textured LLDPE shear tests was that four of the five coupons <br />tested must have an ultimate strength of at least 112 pounds per pulling inch (ppi) prior to yield. <br />The specified acceptance criteria for peel tests was that four of the five coupons tested must <br />have ultimate strength of at least 96 ppi and achieve a Film Tear Bond (FTB) upon breaking. <br />All destructive fusion seam and extrusion seam samples met specifications. <br />The specified acceptance criteria for 80 -mil single -sided textured LLDPE to 80 -mil VLDPE <br />shear tests was that four of the five coupons tested must have an ultimate strength of at least <br />88 pounds per pulling inch (ppi) prior to yield. The specified acceptance criteria for peel tests <br />were that four of the five coupons tested must achieve a Film Tear Bond (FTB) upon breaking. <br />All destructive fusion seam and extrusion seam samples met specifications. <br />The summaries of destructive test results for fusion and extrusion seams are presented in <br />Appendix K -8. The Geomembrane Record Drawing No. 5 (Appendix A) shows the destructive <br />test sample locations. <br />1 2o3\ MoxCenfleo8D2NW322o3 .aaoo.oa3aom.Me Golder Associates <br />