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amec? <br />S D. The following procedures shall apply to locations where seams cannot be non-destructively tested, <br />as determined by CERTIFYING ENGINEER: <br />If the seam is accessible to testing equipment prior to final installation, the seam shall be <br />non-destructively tested prior to final installation. <br />2. If the seam cannot be tested prior to final installation, the seaming, operations shall be <br />observed by CQA Monitor for uniformity and completeness. <br />E. In the event that seam continuity cannot be demonstrated for a non-destructive test of a fusion <br />seam as outlined above, the CONTRACTOR shall perform the non-destructive testing over <br />smaller areas as a means of defining the questionable area, and shall: <br />Extrusion weld the outside edge of the questionable seam area and vacuum box test the <br />extrusion weld; or, <br />2. Cap the questionable area and vacuum test the cap. <br />3.09 DESTRUCTIVE TESTING <br />A. CONTRACTOR shall test a minimum of one destructive test sample per five hundred (500) feet <br />of seam length from a location specified by CERTIFYING ENGINEER. CONTRACTOR shall <br />not be informed in advance of the sample location. The samples shall be taken centered over the <br />seam and prioritized as follows: <br />0 1. A minimum of one sample per day; <br />2. All areas identified as suspect during seaming, non-destructive testing/monitoring, and in <br />unusual working conditions. <br />A minimum of one sample for each geomembrane seamer. <br />4. A minimum of one sample every five hundred (500) feet of seaming. <br />B. Samples shall be cut by CONTRACTOR as the seaming progresses. Sampling locations shall be <br />determined by CERTIFYING ENGINEER. CQA Monitor must witness the obtainment of all <br />destructive test samples by CONTRACTOR. CONTRACTOR shall mark all samples with their <br />seam number, date, welding machine number, welding technician identification, extruder and <br />nozzle/wedge temperature, and ambient air temperature. CONTRACTOR shall document the <br />date, time, roll and seam number, ambient temperature, and pass or fail description. All holes in <br />the geomembrane resulting from obtaining the seam samples shall be immediately repaired. All <br />patches shall be vacuum tested. <br />C. The samples shall be a minimum twelve (12) inches wide by twenty-four (24) inches long with the <br />seam centered lengthwise. The sample shall be cut into two equal length pieces, half to be given to <br />CC&V and the other half kept by CONTRACTOR. <br />D. CONTRACTOR shall cut and test ten (10) one (1) inch wide specimens from his sample. All <br />testing shall be conducted at room temperature (60° F - 80° F) CONTRACTOR shall test five (5) <br />specimens for seam shear strength and five (5) for peel strength. Both inside and outside tracks of <br />• fusion seams will be tested for peel strength. To be acceptable, four (4) out of the five (5) <br />specimens must pass according to criteria established in Article 2.01. Any specimen that fails <br />Section 02776 Page 19 of 22 September 3, 2008 <br />Geomembrane Revision 1 <br />SAProjects\1125 CC&V Phase 5 VLF\I - Tech Specs\Arequa IFC Specs\02776.rt.doc