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Upper Northern Portion of WMU FU-08 September 2009 Forward Landfill Project No.021605.09 40 seams in the repaired area was tested with the same procedure as described in the vacuum box testing procedures discussed previously. Size of Samples - Prior to testing in the laboratory, two samples, one at each end of the actual sample location, were cut for field-testing. If both specimens passed the field test, the sample was taken to the laboratory for testing. The size of the destructive samples was approximately 12 inches wide by 42 inches long. Laboratory Testing - The samples were taken to Vector's on-site laboratory for destructive testing of the seam. The samples were tested with a certified, calibrated tensiometer according to the requirements of ASTM D-6392. After seam strength tests for the destructive samples were obtained, the results were given verbally to the Contractor and were also reviewed by Vector's CQA Officer. The results of the destructive seam tests are presented within Appendix C. 4.2.4 Defects and Repair Vector's CQA Monitor checked seams and non-seam areas of the geomembrane for defects, holes, blisters, undispersed raw materials, and for signs of contamination by foreign matter. Vector's CQA Monitor examined each suspect location. Vector's CQA Monitor distinctively marked the repair area with a description of the required type of repair. No materials were placed over the geomembrane until Vector's CQA Monitor had approved the repair. The repairs were conducted in accordance with the applicable method specified within the project specifications. Vector's CQA Monitor reviewed each repair and that subsequent testing was performed. Repairs and testing are documented in the repair log presented in Appendix C. Vector Engineering, Inc.• 143E Spring Hill Drive•Grass Valley,CA 95945•(530)272-2448 -14-