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Northern Portion of WMU FU-06 August 2006 <br /> Forward Landfill Project No.021605.07 <br /> The solid 3-inch HDPE pipe protrudes through the berm with a clay plug around <br /> the pipe and a HDPE pipe boot welded to the geomembrane on the berm creating <br /> the proper containment around the pipe. Vector's CQA Monitor inspected the clay <br /> plug and boot and found the installation to be in accordance with the technical <br /> specifications. The leachate will be conveyed from the northern portion of WMU FU- <br /> 06 through an above-ground solid 3-inch HDPE pipe down the northern slope of <br /> WMU FU-06 into a temporary tank. Once the remainder of WMU FU-06 is <br /> completed, leachate will be redirected from the temporary tank to the leachate <br /> collection system for the base liner of WMU FU-06. <br /> Prior to and during placement, Vector's CQA Monitor obtained samples of the <br /> granular and coarse rock material and tested it for particle size (ASTM D-422) and <br /> hydraulic conductivity (ASTM D-2434). The granular and coarse gravel materials <br /> were tested at the specified frequency or greater and found to meet the <br /> requirements of the specifications. The results of the laboratory testing conducted <br /> on the drainage rock are presented in Table 1 and are also included in Appendix E. <br /> TABLE 1 <br /> DRAINAGE MATERIAL PERMEABILITY <br /> SAMPLE NUMBER PERMEABILITY <br /> GRANULAR LAYER SPECIFICATION >0.1 CWVSEC <br /> GDM-01 <br /> (Vernalis 3/8"x#8) 3.5 <br /> GDM-02 11 cm/sec <br /> GDM-03. 8 cm/sec <br /> GDM-04 8 cm/sec <br /> COARSE GRAVEL SPECIFICATION > 1 CNVSEC <br /> CGM-01 <br /> (Vernalis 3/4"xl/2") >10 cm/sec <br /> Once the Contractor placed the granular drainage material, Vector's CQA Monitor <br /> verified the thickness by potholing and measuring the depths on an approximate <br /> Vector Engineering,Inc.•143E Spring Hill Drive•Grass Valley, CA 95945•(530)272-2448 <br /> -14- <br />