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1 i <br />' Appendix C, indicate that all four samples passed the shear test, and the two wedge weld <br />samples (DT2, DT3) passed the peel test. Sample DT1 (extrusion weld simple) failed the <br />peel test because one of the specimens exhibited a peel strength of 43 lbrin. As a result, <br />the second extrusion weld sample (DT4) was collected along the same ~eam. The three <br />' specimens from sample DT4 all exhibited acceptable peel strengths (90 ~Ib/in, 100 lb/in, <br />and 98 Ib/in). <br />' Liner Anchoring <br />' The eastern edge of the installed liner was anchored in a trench excavated at the pond <br />perimeter (see Drawing 1) in accordance with the specifications contained in the <br />' Conceptual Design Report. The liner extended a minimum of one foot vertically and two <br />feet horizontally into the trench. Backfill was placed in [he trench an~l compacted to <br />' anchor the liner. <br />' The northern, southern, and western edges of the installed liner were lied into to the <br />existing liner system by extrusion welding. The approximate locations) of these tie-in <br />' seams are shown on Drawing 1. For added protection against leakage ~om the ponds, <br />the existing liner was placed on top of the new liner a[ the tie-in seams Along the pond <br />' side slopes. <br />' Liner Repair <br />All liner repairs were performed using patch material consisting of r~mnants of the <br />' textured HDPE geomembrane to seal any holes in [he liner panels and long the liner <br />seams, including holes created during non-destructive and destructive seapn testing. All <br />' patches extended a minimum of six inches beyond the perimeter of the ~idamaged area. <br />All patches were extrusion welded and vacuum tested at 5 psi minimum va~uum. <br />' Liner Protection <br />A rub sheet consisting of textured 60-mil HDPE geomembrane was pl~ced along the <br />bottom of New Pond 2 and New Pond 3 to provide extra protection again~t liner tearing <br />' or puncture in the event that heavy machinery is used for sludge removal. In addition, a <br />remnant of/<-inch thick conveyor belt was placed in the sump area of Nei Pond 3. The <br />' Snn Lurs Project 9 Ceo Trnns, /nc. <br />rbr~¢ulbmg4anlmr-pel9l.mrr rremmendpunJhe.mim Amh mrynJOr i Febnmry 1001 <br />