COMPLIANCE INFO_FINAL WMU FU-23 DESIGN RPT & CONCURRENCE LTRS

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Page 30 • Observe all continuity testing and record results on the panel/seam log, and the panel layout drawing. • Verify that all testing is completed in accordance with the Specifications. • Identify any failed areas, by marking the area with a waterproof marker compatible with geomembrane, inform the Geosynthetics Contractor of any required repairs, and record the repair on the panel/seam log. • Verify that all repairs are completed and tested in accordance with the Specifications. • Record all completed and tested repairs on a repair sheet, and the panel layout drawing. Destructive Seam Sampling Procedures and Field Testing. Destructive seam samples will be taken at intervals of at least one test per 500 linear feet of geomembrane seams. However, additional samples will be taken if the QA/QC Inspector suspects that a seam does not meet the Specification requirements. Reasons for taking additional samples may include, but are not limited to: • Wrinkling in seam area • Excess crystallinity • Suspect seaming equipment or techniques • Weld contamination • Insufficient overlap • Adverse weather conditions • Failing tests The QA/QC Inspector selects the locations from where seam samples will be cut for destructive laboratory testing as follows: • A minimum of one test per 500 feet of seam length. This is an average frequency for the entire installation; individual samples may be taken at greater or lesser intervals. The testing frequency will be increased if welding operations were conducted in temperatures below 400F. This increase will be agreed upon by the Construction Manager, QA/QC Manager, and Geosynthetics Contractor. • A maximum frequency must be agreed to by the Construction Manager, QA/QC Manager, and Geosynthetics Contractor at the pre-construction meeting. However, if the number of failed samples exceeds 5 percent of the tested samples, this frequency may be increased at the discretion of the QA/QC Manager. Samples taken as the result of failed tests do not count toward the total number of required tests. The QA/QC Inspector will not inform the Geosynthetics Contractor in advance of selecting the destructive sample locations.