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October 2001 -17- 003-2182.004 <br /> are presented in Appendix G-2 and summarized in Table 5. CQC Proctor tests were not <br /> included in the Proctor testing frequency. <br /> 4.1.5 Permeability Tests <br /> Golder conducted two permeability tests of recompacted samples of Soil Liner Fill at Golder's <br /> laboratory in Lakewood, Colorado. The testing frequency (approximately one test per 3,000 <br /> cubic yards) exceeded the minimum specified testing frequency of one test per 5,000 cubic <br /> yards. Testing was performed with a flexible-wall permeameter with backpressure saturation <br /> and a constant rate of flow (ASTM D5084, Method D). The fill was recompacted to the in- <br /> place density measured during nuclear density tests and the corresponding moisture content(as <br /> determined from oven-dried samples). The nuclear density value measured in the field was <br /> corrected for coarse particles according to ASTM D4718. Laboratory tests yielded coefficients <br /> of permeability for the CQA samples from 2.1 x 10-8 cm/sec to 5.8 x 10-8 cm/sec, all of which <br /> are less than the specified maximum permeability of 1 x 10"6 cm/sec. The test results for the <br /> Soil Liner Fill are presented in Appendix G-3 and summarized in Table 5. <br /> 4.2 Field Testing and Monitoring <br /> Golder observed all fill operations in the External Pond to verify,when necessary, lift thickness, <br /> adequate compaction, and acceptable moisture conditions. When Golder performed nuclear <br /> density testing, holes made in the fill during testing were filled by tamping Soil Liner Fill into <br /> the holes. Golder standardized nuclear gauges at the start of each day's work according to <br /> ASTM D2922. <br /> 4.2.1 Subgrade Preparation <br /> Golder monitored subgrade preparation, including verification that Ames compacted the <br /> subgrade with a smooth drum vibratory compactor. Golder verified that Ames removed <br /> protruding rocks from the subgrade surface prior to Soil Liner Fill placement. Golder <br /> I\00\2182\F=RNAL POND"TTINAL DOC Golder Associates <br />