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WMU FU-08 October 2008 <br /> Forward Landfill Project No.021605.08 <br /> Monitor performed sieve analysis tests on five (5) samples of the granular drainage <br /> gravel. In addition, Vector CQA Monitor performed sieve analysis on one (1) sample <br /> of the coarse gravel fill. <br /> The results of LCRS granular drainage material sieve analyses indicated 100% <br /> passing the 3/8-inch sieve and less than 3% passing the No. 200 sieve. The results of <br /> the coarse gravel sieve analyses indicated 100% passing the 1-inch sieve, maximum <br /> 15% passing the 1/2-inch sieve, maximum 5% passing the No. 4 sieve and maximum <br /> 2% passing the No. 200 sieve. <br /> Hydraulic conductivity testing of the granular drainage material indicated an <br /> average flow rate greater than 10.0 cm/sec, which exceeds the requirement of 0.1 <br /> cm/sec. Hydraulic conductivity testing of the coarse granular drainage material <br /> indicated an average flow rate greater than 10.0 cm/sec, which exceeds the <br /> requirement of 1 cm/sec. <br /> A summary of the laboratory testing conducted on the granular drainage layer and <br /> the coarse gravel are presented in Tables 6 and 7, respectively. The laboratory test <br /> results of the granular drainage gravel and coarse gravel testing are included in <br /> Appendix F and Appendix G, respectively. <br /> TABLE6 <br /> GRANULARI MATERIAL LABORATORY TESTING SUMMARY <br /> SAMPLE GRAIN SIZE PERM. <br /> NUMBER SOIL DESCRIPTION 3/4° 200% K(cm/sec) <br /> SPECIFICATIONS 100% <3% >0.1 cm/sec <br /> GD-1 3/8" Pea Gravel 100% 0.4% >10 cm/sec <br /> GD-2 3/8" Pea Gravel 100% 0.3% >10 cm/sec <br /> GD-3 3/8" Pea Gravel 100% 0.4% >10 cm/sec <br /> GD-4 3/8" Pea Gravel 100% 0.3% >10 cm/sec <br /> Vector Engineering, Inc. ° 143E Spring Hill Drive•Grass Valley, CA 95945 •(530)272-2448 <br /> -17- <br />