2014-01-17_REPORT - M1980244 - Laserfiche WebLink

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Cripple Creek & Victor Gold Mining Company Laboratory Liner Extension Final Report Quality Assurance Monitoring & Test Results January 14, 2014 3.0 Geosynthetic Materials Installation ameO Geosynthetics installed for the Laboratory Liner Extension consisted of GCL and 80- mil single -sided textured LLDPE geomembrane with an overlay of geotextile. The BentoLiner NWL GCL and the LLDPE geomembrane were manufactured by GSE. Geosynthetic installation included deployment and seaming of GCL. Seaming of GCL consisted of overlapping the GCL material with a bead of bentonite powder between the overlap. Deployment, seaming, non - destructive, and destructive testing of 80 -mil single -sided texture LLDPE geomembrane was performed at the required intervals. Lone Star Lining Company (Lone Star) installed approximately 1,204 square feet of both GCL and geomembrane. GLC was placed on compacted and approved subgrade followed by the geomembrane. The geomembrane was secured in one of two ways for this project. Where the liner was tied to the existing concrete slab; it was held in place using a stainless steel batten strip anchored by 3/8- inch - stainless steel expansion bolts. For the new slab, the liner was extrusion welded to a HDPE "T- Lock" embed placed by Ames into the new concrete slab. As- builts of the 80 -mil single -sided textured LLDPE geomembrane have been included in Appendix A. 3.1 CQA/CQC Monitoring for Geosynthetics Installation AMEC provided CQA monitoring of geosynthetics used for the Laboratory Liner Extension. AMEC performed geosynthetics CQA activities in accordance with the CQA Plan. Geosynthetics CQA activities performed include: • Reviewed the product certifications of all geosynthetics installed to ensure they met project specifications • Observed and documented GCL, geomembrane, and geotextile deployment to verify it was performed in accordance with project specifications and design • Observation and documentation of GLC seaming performed in accordance with manufactures recommendations • Performed and reviewed conformance testing of geomembrane and GCL • Observation of trial seam testing, destructive testing, and non - destructive testing for geomembrane welds • Measured geomembrane panel thickness to confirm it met project specifications • Confirmed adequate GCL, geomembrane, and geotextile panel overlap • Visually inspected GCL, geomembrane, and geotextile sheet quality, seam alignment, and continuity • Retained archive samples of geomembrane destructive tests and trial seams sAprojects \1125m -cc &v lab liner extension\h2 - design \lab liner extension \roc report\lab liner roc report.docx 6