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. .Kvaerner Meta ~ Project No. 306900 Gene pecification No. GC-18 Geosynthetic Liner In addition to the manufacturer's quality control report, a comprehensive field quality control program shall be provided by the Contractor. 6.1 HOPE 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 h. long and marked with date, seamer's name, ambient temperature, and the welding machine number. Specimens of weld, 1/4 in. to 1/2 in. wide, shall be cui 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 but shall not be less than one sample per 300 k. 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 shaft 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 matenal tests. To be acceptable, four out of the five replicate test results must pass the material specification. The test results shall be provided to the Engineer within two working days following the cutting of coupons. Additionally, at Engineer's option, selected coupons may be sent to an independent laboratory for confirmation testing. 6.3 HDPE Continuity Testing A maximum effort shall be made to install awater-tight liner. This implies that the seams completed in the field, patches, and extrusions shall be tested for leakage and recorded. All failures shall be isolated and repaired as directed by the Engineer and retested. Testing for leakage may be by inter-seam pressure, vacuum box, or other approved methods. The Contractor's field engineer shall inspect each seam, marking his initials and date inspected at the end of each panel. J l1mPYRl7PENiRUCTY.C10.4iC DOC. Rw IAI 9 Vr`YOM4~I fY. tYM