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Kvaerner Metals Project No. 306900 General Specification No. GC-18 ' Geosynthetic Lining 6.0 QUALITY CONTROL ' _ Failure of the material and/or welds to meet the requirements of this specification may be sufficient cause for rejection of the work. Corrective measures, as directed by the ' Engineer, shall be provided by the Contractor at his own expense. The Contractor shall provide a 15-year warranty covering materials and workmanship, as well as degradation due to ultra-violet. Any repairs required within the warranty period. (after acceptance) shall be made at the Contractor's expense. The Contractor shall supply the Engineer with the manufacturer's test report, conducted on random sampling and testing during manufacture, on the liner material supplied. The report should include testing for thickness, strength, tear resistance, low temperature ' impact, density and dimensional stability performed by a qualified testing laboratory and in accordance with applicable ASTM standards. ' In addition to the manufacturer's quality control report, a comprehensive field quality control program shall be provided by the Contractor. 6.1 HDPE Test Seams Test seams shall be provided by the Contractor on fragment pieces of liner to verify that seaming conditions are favorable. Testing shall be performed at the beginning of each seaming period, at the Engineer's option and at least once each four hours, for each piece of seaming apparatus used that day. ' A test seam shall be 3 ft. long and marked v~ith date, seamer's name, ambient temperature, and the welding machine number. Specimens of weld, 1/4 in. to 1/2 in. wide, shall be cut from the test seam and tested. ' If two out of three above samples fail in either shear or peel, the test shall be repeated in its entirety. If the samples fail for the second time (two out of three), the seaming apparatus or seamer shall not be allowed for welding until deficiencies are corrected and two consecutive test seams are successful. In general, seams should be stronger than the material. 6.2 HDPE Strength Testing ' Coupon sampling of all field seams, including patches and repaired areas, shall be taken by cutting a coupon approximately 16 in. wide and 24 in. long, with the seam centered. The frequency and location shall be determined by the Engineer 1 but shall not be less than one sample per 300 ft. of completed field seams. Coupons shall be properly marked for identification. Heat welded seams shall be allowed to cool or warm to about 70°F prior to sampling. The contractor shall cut five replicate specimens, each one inch wide, from the coupon and tested on site for seam strength, peel and thickness, in accordance with the specified material tests. To be acceptable, four out of the five replicate ' test results must pass the material specification. ' J U069\N?\SPECISTRUCTGC165PC.DOC. Rev (01 1 O PrintaE June ] 1999