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TECHNICAL SPECIFICATIONS <br />g. Verify that no continuous horizontal seams are placed on slopes unless approved by <br />CERTIFYING ENGINEER. <br />h. Observe and document that all soil materials placed on top of the geosynthetics are done in <br />such a manner as to ensure that the geosynthetics are not damaged. <br />F. GEOMEMBRANE <br />During geomembrane installation, the CQA MONITOR shall observe and document deployment, <br />trial seams, field seaming, non - destructive and destructive seam testing, and repairs to assure that <br />the installation is in compliance with the SPECIFICATIONS. <br />a. Deployment - The CQA MONITOR shall verify that only approved materials are used, each <br />panel is given a unique panel number, no geomembrane is placed during unsuitable weather <br />conditions as outlined in Section 02776.1 of the SPECIFICATIONS, the geomembrane is not <br />damaged during installation, and anchoring is performed in compliance with the <br />SPECIFICATIONS and design DRAWINGS. The CQA MONITOR shall record the <br />deployment on the deployment log form. <br />b. Trial Seams - The CQA MONITOR shall verify that seaming conditions are performed in <br />compliance with SPECIFICATIONS, tests are performed at required intervals, specified test <br />procedures are followed, and retests are performed in compliance with the <br />SPECIFICATIONS. If the ambient air temperature measured by the CQA MONITOR is <br />above 35 °F for the entire day, the INSTALLER shall perform trial seams at the beginning of <br />each crew shift, and immediately following any work stoppage (i.e., for lunch, weather <br />conditions, etc.) of for more than 30 minutes or at the discretion of the CERTIFYING <br />ENGINEER, for each seaming apparatus used that day. If the ambient air temperature <br />measured by the CQA MONITOR is below 35 °F for the entire day, the INSTALLER shall <br />perform four (4) trial seams, at approximately the same time interval throughout the <br />scheduled work day. Each seamer shall make at least one trial seam each day. Seaming <br />operation shall not commence until the CQA MONITOR has determined that the seaming <br />process is meeting the SPECIFICATION requirement and is acceptable. The CQA <br />MONITOR shall record the trial weld results on the trial seam log form. <br />C. Field Seaming - The CQA MONITOR shall verify that only approved equipment and <br />personnel perform welding, all welding is performed under suitable conditions as specified in <br />the project SPECIFICATIONS, specified overlaps are achieved, seams are oriented in <br />compliance to project requirements, and that grinding techniques and extrudate meet project <br />requirements for extrusion welding. The CQA MONITOR shall record all field seaming on <br />field seaming log forms. <br />d. Non - Destructive Seam Continuity Testing - The CQA MONITOR shall verify that all <br />seams and repair are non - destructively tested in compliance with the project <br />SPECIFICATIONS. If a seam cannot be tested, the seam shall be capped. The CQA <br />MONITOR shall observe capping operations. The CQA MONITOR shall verify that test <br />equipment and gauges are functioning properly and that test procedures are in compliance <br />with the project SPECIFICATIONS. The CQA MONITOR shall verify that all seams and <br />repairs with failing test results are repaired and /or re- tested until passing results are <br />achieved. The CQA MONITOR shall record all non - destructive test locations on the <br />vacuum test and pressure test log forms. <br />e. Destructive Seam Testing - The INSTALLER shall obtain samples, at locations selected by <br />the CQA MONITOR, of the field seamed geomembrane approximately 24 inches along and <br />12 inches across the seam and centered over the seam as follows: <br />i. A minimum of one sample per day. <br />ii. A minimum of one sample for each geomembrane seamer. <br />iii. A minimum of one sample every 500 feet of seaming. <br />iv. Seams that appear suspect to the CQA MONITOR. <br />Geosynthetics Construction Quality Assurance (CQA) Plan August 28, 2013 <br />01400.2 -6 Revision 0 <br />S \Projects \1550 - CC &V Field Spt CQA PSES Bldg \8 0 Project Engineering and Design \8 2 Specifications\PSES Pipe Rack Liner Extension Specifications \01400 2 Geosynthetics CQA docx <br />