2012-02-28_REVISION - M1980244 (75)

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• observe that required overlap distances are met; ■ monitor and record ambient air temperatures; • verify that no continuous horizontal seams are placed on slopes unless approved by CERTIFYING ENGINEER; and ame0 • observe and document that all soil materials placed on top of the geosynthetics are done in such a manner as to ensure that the geosynthetics are not damaged. 6.03.01 GEOMEMBRANE: 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. Deployment - The CQA Monitor shall verify that only approved materials are 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 temperature measured by the CQA Monitor is above 35 °F for the entire 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 for more than 30 minutes or at the discretion of the CERTIFYING ENGINEER, for each seaming apparatus 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 Seamer 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 extrudate 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 seam shall be capped. The CQA Monitor shall observe capping operations. The CQA Monitor shall verify that test equipment and gauges are 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 are 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. Section 01400 2 Page 7 of 11 January 14, 2011 Geosynthetic CQA Plan Revision 0 S \Protects \1125G Squaw Gulch Valley Leach Facilulty Design \I - Tech Specs \01400 2 r0 doc