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Foothill Sanitary Landfill — Module 1 December 2003 <br />County of San Joaquin Job No 031602 00 02 <br />weld. The continuity of the new seams in the repaired area was tested with the <br />same procedure as described in the vacuum box and spark testing procedures <br />discussed previously. <br />Size of Samples - Prior to testing in the laboratory, two specimens of <br />material, at each end of the actual sample location, were cut for field-testing. If <br />both specimens passed the field test, the sample was taken to the laboratory for <br />testing. The size of the destructive samples cut were approximately 12 inches <br />wide by 42 inches long. <br />Laboratory Testing - The samples were taken to Vector's on-site laboratory <br />for destructive testing of the seams by Vector's personnel. The samples were <br />tested with a certified, calibrated tensiometer according to the requirements of <br />ASTM D-6392. After seam strength tests for the destructive samples were <br />obtained, the results were given verbally the Contractor and were also reviewed <br />by Vector's CQA Officer. The results of the destructive seam tests performed by <br />Vector are presented within Appendix J. All seam strength tests met the project <br />specifications for shear and peel strength prior to being accepted. <br />Destructive Test Failure ' - Three samples (sample no: DS 92,113, and <br />148) failed the destructive testing. The failed areas were bracketed with passing <br />tests, repaired by placing a cap strip over the failed areas, and retested. <br />5.3.3 Defects and Repair <br />5.3.3.1 Identification <br />Vector's CQA Monitor checked all seams and non -seam areas of the geomembrane for <br />defects, holes, blisters, undispersed raw materials, and any sign of contamination by <br />foreign matter. Each suspect location both in seam and non -seam areas were <br />examined by Vector's CQA Monitor. All repair areas were distinctively marked with a <br />description of the required type of repair by Vector's CQA Monitor. No materials were <br />allowed to be placed over geomembrane locations that had been repaired until Vector's <br />CQA Monitor approved the repair. <br />Vector Engineering, Inc. • 143E Spring Hill Drive - Grass Valley, CA 95945 - (530) 272-2448 <br />32 <br />