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Forward Landfill WMU FU-23 <br />02778 17 HDPE GEOMEMBRANE <br />brush-type electrode capable of causing visible arc from copper wire. b. Procedures. i. Place copper wire within 1- inch of the edge of extrusion seam or clamp seal. ii. Pass electrode over seam or clamp area and observe for spark. If a spark is detected perform a repair. 5. Destructive Testing. a. Location and Frequency of Testing. i. The QA/QC CONSULTANT shall collect destructive test samples at a minimum frequency of one test location per 500 feet of seam length. ii. Determine test locations during welding. Locations may be prompted by suspicion or excess crystallinity, contamination, offset welds, or suspected defect. The QA/QC CONSULTANT will be responsible for choosing the locations and will not notify installer in advance of selecting locations where weld samples will be taken. iii. The QA/QC CONSULTANT may increase the test frequency based on marginal results. b. Sampling Procedures. i. The GEOSYNTHETICS CONTRACTOR shall cut samples at locations designated by the QA/QC CONSULTANT as the welding progresses. Verify that laboratory test results have been obtained before the geomembrane is covered by another material. ii. The QA/QC CONSULTANT will number each sample and mark sample number and location in compliance with the CQA program. iii. The GEOSYNTHETICS CONTRACTOR shall immediately repair all holes in the geomembrane resulting from destructive test sampling. Repair in accordance with repair procedures described in this Section. Test the continuity of the repair in accordance with this Section. iv. Size of Samples: minimum 12 inches wide by 44-inches-long with the seam centered lengthwise. Cut a 1-inch-wide strip from each end of the sample and test these for (shear and peel) in the field. Cut the remaining sample into three parts for distribution as follows: • One portion for the GEOSYNTHETICS CONTRACTOR: 12 inches by 12 inches for quality control testing. • One portion for QA/QC CONSULTANT: 12 inches by 18 inches for quality assurance testing. • One portion to the OWNER for archive storage: minimum 12 inches by 12 inches. c. Field Testing i. The GEOSYNTHETICS CONTRACTOR shall test the two, 1-inch-wide strips by tensiometer for peel and shear,