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Newmont-Cripple Creek&Victor Gold Mine <br /> Technical Specification No.02776-O.DOCX ■ <br /> Squaw Gulch VLF <br /> Project No.475.0106.006 <br /> April 08,2016 <br /> 1. A minimum of one sample per day; <br /> 2. All areas identified as suspect during seaming, non-destructive <br /> testing/monitoring, and in unusual 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 /> B. Samples shall be cut by CONTRACTOR as the seaming progresses. Sampling <br /> locations shall be determined by CERTIFYING ENGINEER. CQA Monitor must <br /> witness the obtainment of all destructive test samples by CONTRACTOR. <br /> CONTRACTOR shall mark all samples with their seam number, date, welding <br /> machine number, welding technician identification, extruder and <br /> nozzle/wedge temperature, and ambient air temperature. CONTRACTOR shall <br /> document the date, time, roll and seam number, ambient temperature, and <br /> pass or fail description. All holes in the geomembrane resulting from obtaining <br /> the seam samples shall be immediately repaired. All patches shall be vacuum <br /> tested. <br /> C. The samples shall be a minimum twelve (12) inches wide by twenty-four (24) <br /> inches long with the seam centered lengthwise. The sample shall be cut into <br /> two equal length pieces, half to be given to CC&V and the other half kept by <br /> CONTRACTOR. <br /> D. CONTRACTOR shall cut and test ten (10) one (1) inch wide specimens from his <br /> sample. All testing shall be conducted at room temperature (60' F - 80' F) <br /> CONTRACTOR shall test five <br /> (5) specimens for seam shear strength and five (5) for peel strength. Both <br /> inside and outside tracks of fusion seams will be tested for peel strength. To <br /> be acceptable,four (4) out of the five <br /> (5) specimens must pass according to criteria established in Article 2.01. Any <br /> specimen that fails through the weld or at the weld/sheet interface shall be <br /> considered a failure, unless the weld strength exceeds the sheet strength, as <br /> discussed in Section 2776, Item 2.01. The tensiometer shall have a grip <br /> separation of four (4) inches plus the width of the seam. The seam is to be <br /> centered between the clamps. The grip separation rates for LLDPE are twenty <br /> (20) inches per minute for shear and twenty (20) inches per minute for peel. <br /> These tests shall not fail according to the criteria in Article 2.01. <br /> E. CQA Monitor must witness the testing of all destructive samples. Destructive <br /> tests will be performed within two (2) days of the samples being obtained. <br /> Failing tests shall be subjected to additional testing until a passing area is <br /> found. A passing area is defined as a seam(s) bounded at each end by a <br /> passing destructive test. Seams will be tracked in each direction until a passing <br /> destructive test is found or until a previous passing destructive test is reached. <br /> Page 18 <br />