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WMU D-99 Construction September 1999 <br /> Forward Landfill Job No.986011.02 <br /> 5.0 GEOSYNTHETICS CONSTRUCTION <br /> 5.1 General Description of Activities <br /> The geosynthetics components (from bottom to top) on the sideslopes of the <br /> WMU D-99 liner system consisted of geosynthetic clay liner (GCL), 60-mil HDPE <br /> geomembrane (smooth top and textured bottom), and geocomposite drainage net <br /> (geotextile-geonet). The liner system was similar for the Eastern Ash Pit Closure with <br /> some areas requiring double textured HDPE and a double nonwoven geocomposite. <br /> The geosynthetics components (from bottom to top) on the WMU D-99 base consisted <br /> of 60-mil HDPE textured geomembrane (smooth top and textured bottom) and 8-oz <br /> filter geotextile. The geosynthetics components (from bottom to top) of the Leachate <br /> Impoundment liner system consisted of geosynthetic clay liner (GCL), 60-mil secondary <br /> HDPE geomembrane, geonet, and 60-mil primary HDPE geomembrane. The <br /> installation and associated CQA provided for each of these components are discussed <br /> within the following sections. <br /> ANIL <br /> 5.2 Geosynthetics Preconstruction Meeting <br /> An informal geosynthetics preconstruction meeting was conducted prior the <br /> geomembrane installation between Forward, Inc., Guinn, GSE, and Vector. During this <br /> meeting, schedules were discussed along with deployment procedures and <br /> coordination with the Earthworks Contractor. The minutes of the geosynthetics <br /> preconstruction meeting are included in the progress meeting minutes. <br /> 5.3 Geosynthetic Clay Liner(GCL) Installation <br /> 5.3.1 GCL Factory Quality Control <br /> Upon arrival by truck shipment, the unloading and storage of the GCL rolls <br /> were observed by Vector's CQA Monitors. Each roll of GCL was logged in by roll <br /> number. Information regarding the roll number, lot, batch, laboratory testing log, <br /> and pass/fail of the sheet was recorded. A copy of Vector's log of GCL received <br /> has been included in Appendix J. Manufacturer's certifications are also <br /> presented in Appendix J. <br /> Vector Engineering, Inc. • 12438 Loma Rica Dr.,#C • Grass Valley, CA• (530)272-2448 <br /> -11- <br />