2009-12-21_REVISION - M1980244 (40)

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October 2004 -28- 043 -2170 6.0 GEOSYNTAETIC CQA TESTING ANT) MONITORING • • The following sections describe the CQA activities performed by Golder for the geomembrane installed in the Phase We OSA, and the geosynthetics installed in the LDT and Underdrains. In accordance with the Golder CQA Plan, when a Golder monitor observed deficiencies, the monitor determined the nature and extent of the problem and notified Poly -Flex and/or CC &V. When unsatisfactory test results identified a deficiency, Golder performed additional tests to define the extent of the deficient area. Poly -Flex corrected deficiencies to meet the requirements of the specifications, and Golder retested and /or approved the corrected deficiency prior to any additional related work. 6.1 Ore Storage Area Geomembrane CQA activities conducted by Golder during the installation of the geomembrane in the Phase IVe OSA consisted of the following: • Conformance sampling and testing of the geomembrane; • Observation and approval of the SLF surface prior to deployment of 80 -mil single-sided textured LLDPE geomembrane in the OSA; • Observation and documentation of geomembrane deployment, including verifying sheet thickness and overlap and documenting panel layout; • Observation of trial seam sample testing and documentation of results; • Observation and documentation of field seaming; • Identification of destructive seam sample test locations, observation of destructive seam sample testing, and documentation of test results; • Observation and documentation of geomembrane repairs; and • Observation and documentation of non - destructive pressure testing of fusion seams and vacuum testing of extrusion seams and repairs. The following sections present a detailed description of each of the above activities. L• 1011217010 WCcrt- QAph1Vo-10WIN32IMW00.WBSCeftn[VLd c Golder Associates