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WMU FU-08 October 2008 <br /> Forward Landfill Project No.021605.08 <br /> TABLE 7 <br /> COARSE GRAVEL LABORATORY TESTING SUMMARY <br /> SAMPLE SOIL GRAIN SIZE PERM <br /> NUMBER DESCRIPTION 1 '/a" #4 -200% (cm/sec) <br /> SPECIFICATIONS 100% <20% <5% <2% >1.0 cm/sec <br /> CG-1 1" round rock 100% 7% 4% 1% >10 cm/sec <br /> CG-2 1" round rock 100% 1 6% 1 3% 1 1% 1 >10 cm/sec <br /> 4.5 Protective Operations Layer <br /> Upon completion and approval of the drainage layer and geotextile filter (discussed <br /> in detail in Section 5), a one-foot thick protective operations layer was placed on the <br /> base and side-slopes (up the slope 10 feet) of the Central Portion of WMU FU-08. <br /> The protective operations layer was placed by spreading the on-site soil material in <br /> a minimum 12-inch lift over the filter geotextile with a D6 and D4 LGP dozer. <br /> Ash, Vector's CQA Monitor observed that no damage occurred to the underlying <br /> geosynthetics. <br /> 4.6 Anchor Trenches and Termination Berms <br /> Prior to commencement of geomembrane installation, Vector's CQA Monitor <br /> observed that the anchor trenches were suitable for geomembrane installation and <br /> free of loose soil or deleterious material. After completion of geosynthetics <br /> deployment, Vector's CQA Monitor observed and documented that the backfill for <br /> the anchor trenches was placed and compacted in accordance with the project <br /> specifications and no damage occurred to the geosynthetics material. <br /> Documentation of the anchor trench backfilling and termination berm is provided in <br /> Appendix C. <br /> Soil termination berms were constructed along the eastern side of WMU FU-08 to <br /> prevent surface water run-on into the cell. The termination berm was constructed <br /> Vector Engineering, Inc. • 143E Spring Hill Drive•Grass Valley, CA 95945 •(530)272-2448 <br /> -18- <br />