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wide,with the weld centered along the length of the sample. The sample must be divided into three sections: one 12-inch by 12-inch section for the Geosynthetics Contractor, one 12-inch by 18-inch section for laboratory testing, and one 12-inch by 12-inch for the Owner to archive. Record the results of field testing on the destructive seam tests form,the panel/seam log. Third Party Laboratory Testing. All CQA destructive samples must be shipped to the testing laboratory to verify seam quality. The laboratory will test five specimens from each sample in each method used. Minimum test values are presented in the specifications. The testing laboratory must provide test results within 24 hours, in writing or via telephone,to the QA/QC Manager with certified test results to be provided within 5 days. The QA/QC Manager must immediately notify the Construction Manager and Geosynthetics Contractor in the event of failed test results. If the laboratory test fails in either peel or shear,the Geosynthetics Contractor must either reconstruct the entire seam,or recover additional samples at least 10 feet on either side of the failed sample for retesting. This process is repeated until passed tests bracket the failed seam section. All seams must be bounded by locations from which passing laboratory tests have been taken. Laboratory testing governs seam acceptance. In no case can field testing of repaired seams be used for final acceptance. 4.2.5 Repairs Portions of geomembrane panels and seams that: (1) contain a flaw; (2) a destructive test; or (3) nondestructive test cuts of holes, must be repaired in accordance with the Specifications. The QA/QC Inspector must locate and record all repairs on the repair sheet and panel layout drawing. Acceptable repair techniques,include the following: • Patching-used to repair large holes,tears,large panel defects,undispersed raw materials, welds, contamination by foreign matter, and destructive sample locations. • Extrusion used to repair small defects in the panels and seams. In general, this procedure should be used for defects less than 0-inch in the largest dimension. • Capping - used to repair failed welds or to cover seams where welds cannot be nondestructively tested. • Removal - used to replace area with large defects where preceding methods are not appropriate. Also used to remove excess material (wrinkles,fishmouths, intersections, etc.) from the installed geomembrane. Areas of removal shall be patched or capped. Repair procedures include the following: • Abrade geomembrane surfaces to be repaired(extrusion welds only)no more than 1 hour Page 35