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TECHNICAL SPECIFICATIONS <br />10. All areas where soap bubbles appear shall be marked and repaired and then retested. <br />11. Test locations, documentation number, date and tester will be indicated with an indelible marker <br />on the geomembrane for each repair or seam section. The color code for indelible markers is to be <br />determined at the pre- construction meetings, and strictly adhered to. <br />C. The following nondestructive test procedures are applicable to fusion seaming and shall be followed by <br />CONTRACTOR. <br />1. Sea] one end of the seam to be tested. <br />2. Insert needle or other approved pressure feed device through the sealed end of the channel created <br />by the double wedge fusion weld. <br />3. Energize the air pump to verify the unobstructed passage of air through the channel. <br />4. Seal the other end of the channel. <br />5. Energize the air pump to the pressure of approximately 30 psi, close valve, and sustain pressure <br />for approximately 5 minutes. <br />6. If loss of pressure exceeds 3 psi, or pressure does not stabilize, locate faulty area, repair, and <br />retest. <br />7. Remove needle or other approved pressure feed device. <br />8. Repair pressure test locations as described in Section 3.10. <br />9. Beginning and ending pressures and times, test locations, documentation number, date, and tester <br />will be indicated with an indelible marker on the liner at each test interval location. <br />D. The following procedures shall apply to locations where seams cannot be non - destructively tested, as <br />determined by CERTIFYING ENGINEER: <br />If the seam is accessible to testing equipment prior to final installation, the seam shall be non- <br />destructively tested prior to final installation. <br />If the seam cannot be tested prior to final installation, the seaming operations shall be observed by <br />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 seam as <br />outlined above, the CONTRACTOR shall perform the non - destructive testing over smaller areas as a <br />means of defining the questionable area. The identified questionable area shall be capped. <br />3.9 DESTRUCTIVE TESTING <br />A. CONTRACTOR shall test a minimum of one destructive test sample per five hundred (500) feet of <br />seam length from a location specified by CERTIFYING ENGINEER. CONTRACTOR shall not be <br />informed in advance of the sample location. The samples shall be taken centered over the seam and <br />prioritized as follows: <br />1. A minimum of one sample per day; <br />2. All areas identified as suspect during seaming, non - destructive testing/monitoring, and in unusual <br />working conditions. <br />3. A minimum of one sample for each geomembrane seamer. <br />4. A minimum of one sample every five hundred (500) feet of seaming. <br />Geomembrane August 28, 2013 <br />02776.1 -13 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 \02776 1 Geomembrane does <br />