2004-10-18_REVISION - M1980244 (24)

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During geomembrane installation, the CQA Monitor shall observe and document deployment, trial seams, field seaming, non-destructive and destructive seam testing, and repairs to assure that the installation is in compliance with the SPECIFICATIONS. Deplovment -The CQA Monitor shall verify that only approved materials aze used, each panel is given a unique panel number, no geomembrane is placed during unsuitable weather conditions as outlined in Section 02776, Article 1.05 of the SPECIFICATIONS, the geomembrane is not damaged during installation, and anchoring is performed in compliance with the SPECIFICATIONS and design DRAWINGS. The CQA Monitor shall record the deployment on the deployment log form. Trial Seams - The CQA Monitor shall verify that seaming conditions are performed in compliance with SPECIFICATIONS, tests are performed at required intervals, specified test procedures are followed, and retests are performed in compliance with the SPECIFICATIONS. If the ambient air temperatwe measured by the CQA Monitor is above 35°F for the entre day, the INSTALLER shall perform trial seams at the beginning of each crew shift, and immediately following any work stoppage (i.e., for lunch, weather conditions, etc.) of 30 minutes or more for each seaming appazatus used that day. If the ambient air temperature measured by the CQA Monitor is below 35°F for the entire day, the INSTALLER shall perform four (4) trial seams, at approximately the same time interval throughout the scheduled work day. Each Seamen shall make at least one trial seam each day. Seaming operation shall not commence until the CQA Monitor has determined that the seaming process is meeting the SPECIFICATION requirement and is acceptable. The CQA Monitor shall record the trial weld results on the trial seam log form. Field Seaming -The CQA Monitor shall verify that only approved equipment and personnel perform welding, all welding is performed under suitable conditions as specified in the project SPECIFICATIONS, specified overlaps are achieved, seams are oriented in compliance to project requirements, and that grinding techniques and exhvdate meet project requirements for • extrusion welding. The CQA Monitor shall record all field seaming on field seaming log forms. Non-Destructive Seam Continuity Testing -The CQA Monitor shall verify that all seams and repair are non-destructively tested in compliance with the project SPECIFICATIONS If a seam cannot be tested, the CQA Monitor shall observe cap strip operations. The CQA Monitor shall verify that test equipment and gauges aze functioning properly and that test procedures are in compliance with the project SPECIFICATIONS. The CQA Monitor shall verify that all seams and repairs with failing test results aze repaired and/or re-tested until passing results are achieved. The CQA Monitor shall record all non-destructive test locations on the vacuum test and pressure test log forms. Destructive Seam Testine -The INSTALLER shall obtain samples, at locations selected by the CQA Monitor, of the field seamed geomembrane approximately 24 inches along and 12 inches across the seam and centered over the seam as follows: ® a minimum of one sample per day; ® a minimum of one sample for each geomembrane seamen; ® a minimum of one sample every 500 feet of seaming; and ® seams that appear suspect to the CQA Monitor. I • Section 01400.2 Page 7 of 11 March 22, 2000 Geosynthetic CQA Plan Golder Associates Revision 5 1:\041085\043-21]0\IVC CERrIFICAr10N REPORIIPHASE NC OsA CERI\APPENDICiESWPPENDIX E TECHMCAL SPECfftCA]IONS\OI4002R5 DOC