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Trial Seams - The CQA Monitor shall verify that seaming conditions are <br />performed in compliance with SPECIFICATIONS, tests are performed at required <br />intervals, specified test procedures are followed, and retests are performed in <br />compliance with the SPECIFICATIONS.. If the ambient air temperature measured <br />by the COA Monitor is above 35°F for the entire day, the INSTALLER shall <br />perform trial seams at the beginning of each crew shift, and immediately <br />following any work stoppage (i.e., for lunch, weather conditions, etc.) of 30 <br />minutes or more for each seaming apparatus used that day. If the ambient air <br />temperature measured by the CQA Monitor is below 35°F for the entire day, the <br />INSTALLER shall perform four (4) trial seams, at approximately the same time <br />interval throughout the scheduled work day. Each Seamer shall make at least <br />one trial seam each day. Seaming operation shall not commence until the CQA <br />Monitor has determined that the seaming process is meeting the <br />SPECIFICATION requirement and is acceptable. The CQA Monitor shall record <br />the trial weld results on the trial seam log form. <br />Field Seaming - The CQA Monitor shall' verify that only approved equipment and <br />personnel perform welding, all welding is performed under suitable conditions as <br />specified in the project SPECIFICATIONS, specified overlaps are achieved, <br />seams are oriented in compliance to project requirements, and that grinding <br />techniques and extrudate meet project requirements for extrusion welding. The <br />CQA Monitor shall record all field seaming on field seaming log forms. <br />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 CQA Monitor shall observe <br />cap strip operations. The CQA Monitor shall verify that test equipment and <br />gauges are functioning properly and that test procedures are in compliance with <br />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 <br />are achieved. The CQA Monitor shall record all non-destructive test locations on <br />the vacuum test and pressure test log forms. <br />Destructive Seam Testing - The INSTALLER shall obtain samples, at locations <br />selected by the CQA Monitor, of the field searned geomembrane approximately <br />24 inches along and 12 inches across the seam and centered over the seam as <br />follows: <br />? a minimum of one sample per day; <br />? a minimum of one sample for each geomembrane seamer; <br />? a minimum of one sample every 500 feet of seaming; and <br />? seams that appear suspect to the CQA Monitor. <br />The CQA Monitor shall witness the testing of destructive seam samples by the <br />INSTALLER. The INSTALLER shall mark all samples with their roll and seam number, <br />date, machine number, welding technician identification, extruder and nozzle/wedge <br />temperature, and ambient air temperature. <br />The INSTALLER shall test all destructive samples in compliance with the project <br />SPECIFICATIONS. <br />Section 01400.2 Page 8 of 12 March 22, 2000 <br />Geosynthetic CQA Plan Golder Associates Revision 5 <br />IASSA 0SS%irnal repon%specs%014002r5.doc