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WMU FU -03, WMU F -West Leachate Impoundment and Desilting Basin February 2004 Forward Landfill Job No. 021605.03 performed sieve analysis tests on two (2) evaluation samples and four (4) construction samples of the drainage gravel. In addition, Vector CQA Monitor performed sieve analysis on two (2) evaluation samples and two (2) construction samples of the coarse gravel fill. The results of LCRS granular drainage material sieve analysis indicated 100% passing the 3/8 -inch sieve and less than 3% passing the No. 200 sieve. The results of the coarse gravel sieve analysis indicated 100% passing the 1 -inch sieve, maximum 30% passing the 3/8 -inch sieve, maximum 5% passing the No. 4 sieve and maximum 2% passing the No. 200 sieve. Hydraulic conductivity testing of the granular drainage material indicated an average flow rate of 5 cm/sec, which exceeds the requirement of 0.5 cm/sec. The hydraulic conductivity testing results for the coarse gravel exceeded the laboratory equipment capacity of 10 cm/sec, which exceeds the requirement of 5 cm/sec. A summary of the laboratory testing conducted on the granular drainage layer and the coarse gravel are presented in Tables 5 and 6, respectively. The laboratory test results of the drainage gravel and coarse gravel testing are included in Appendix F and Appendix G, respectively. Table 5 — Granular Drainage Material Laboratory Testing Summary SAMPLEGRAIN NUMBER DATE SOIL DESCRIPTION SIZE 3/8" -200%® PERM. K cm/sec Specifications', 100% 43% >0.1 cm/sec Evaluation Testin GCM -2E 3/8" Pea Gravel 100 0 10 GDM -3E 3/8" Pea Gravel 100 0.4 3 Construction Testing GDM -1 3/8" Pea Gravel 100 0.5 4 GDM -2 3/8" Pea Gravel 100 0.3 4 GDM -3 3/8" Pea Gravel 100 0.3 6 GDM -4 3/8" Pea Gravel 100 0.5 3 0 Vector Engineering, Inc. - 143E Spring Hill Drive - Grass Valley, CA 95945 - (530) 272-2448 -16-