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Upper Northern Portion of WMU FU-08 September 2009 <br /> Forward Landfill Project No.021605.09 <br /> material onto the geotextile. A LGP dozer was then used to push the material to <br /> grade. Vector's CQA Monitor checked placement of materials involved with the <br /> granular drainage layer to ensure that the placement activities did not damage the <br /> underlying geosynthetics. <br /> In addition, a coarse granular drainage rock was placed in the leachate collection <br /> trenches within the northern portion of WMU U-08 cell. The leachate collection <br /> trenches were constructed to the lines and grades shown on the construction <br /> drawings. The leachate collection trenches were constructed to flow towards the <br /> southeast area of the cell. The leachate collection trench consisted of a 3-inch <br /> perforated HDPE pipe encapsulated by the coarse granular drainage rock and <br /> geotextile. Vector's CQA Monitor observed the placement of the HDPE pipe, coarse <br /> granular drainage rock, and geotextile. The leachate collection trenches were <br /> constructed in accordance with the specifications. The coarse gravel is placed in a <br /> "burrito wrap" surrounding the LCRS pipe. The limits of the LCRS gravel are <br /> presented in Appendix E. <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 <br /> FU-08 through an above-ground solid 3-inch HDPE pipe down the northern slope of <br /> WMU FU-08 into a temporary tank. Once the remainder of WMU FU-08 is <br /> completed, leachate will be redirected from the temporary tank to the leachate <br /> collection system for the base liner of WMU U-08. <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 /> Vector Engineering, Inc.• 143E Spring Hill Drive-Grass Valley,CA 95945•(530)272-2448 <br /> -18- <br />