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3.19 SEAMS THAT CANNOT BE NON-DESTRUCTIVELY TESTED <br />A. If the weld cannot be tested, cap strip the weld. The welding and cap -stripping <br />operations must be observed by the CQA Monitor and installer for uniformity and <br />completeness. <br />3.20 DEFECT AND REPAIR PROCEDURES <br />SHAW ENV/RONMENTAL, /Nc. <br />San Joaquin County — Extension of Cap Corral Hollow Sanitary Landfill — CH Closure Cap Ext Proj_Technical Specs -4-11-12 Revl.DocReV. 0, 04/05/2012 <br />tLLDPE Geomembrane <br />1 02779-19 <br />A. <br />Examine all welds and non -weld areas of the geomembrane for defects, holes, <br />blister, undispersed raw materials, and any sign of contamination by foreign matter. <br />The surface of the geomembrane must be clean at the time of the examination. <br />B. <br />Repair and non-destructively test each suspect location regardless if it is in a weld <br />area or discovered in the panel. Do not cover geomembrane at locations that have <br />been repaired until non-destructive test results with passing values are available. <br />C. <br />Extrusion weld a patch over all "cross" or "tee" welds and over destructive test <br />specimen locations. <br />D. <br />Remove damaged geomembrane and replace with acceptable geomembrane <br />materials if damage cannot be satisfactorily repaired. <br />E. <br />Repair, removal, and replacement are at Contractor's expense if the damage results <br />from the Contractor's, installer's, or the Contractor's subcontractor activities. <br />F. <br />Repair any portion of the geomembrane exhibiting a flaw, or failing a destructive or <br />non-destructive test. Agreement upon the appropriate repair method will be <br />determined between the CQAC and the installer. Acceptable repair procedures may <br />include: <br />1. Patching: Used to repair large holes (over 3/8 -inch diameter), tears (over <br />2 inches long), undispersed raw materials, contamination by foreign matter, <br />and to cover cross and tee connections. <br />2. Abrading and re -welding: Used to repair small sections of seams. <br />3. Spot welding or seaming: Used to repair small tears (less than 2 inches long), <br />pinholes or other minor localized flaws. <br />4. Capping: Used to repair large lengths of failed seams. <br />5. Removing the seam and replacing with a strip of new material. <br />' <br />G. <br />In addition, satisfy the following procedures: <br />SHAW ENV/RONMENTAL, /Nc. <br />San Joaquin County — Extension of Cap Corral Hollow Sanitary Landfill — CH Closure Cap Ext Proj_Technical Specs -4-11-12 Revl.DocReV. 0, 04/05/2012 <br />tLLDPE Geomembrane <br />1 02779-19 <br />