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October 2001 -8- 003-2182.004 <br /> ► Caterpillar 375L Excavator; and <br /> ► Caterpillar 777 Haul Trucks. <br /> Table 2 presents a summary of the weather during the period of November 26, 2000 through <br /> September 15, 2001 for the External Pond construction. <br /> 2.1 Underground Workings Remediation <br /> No underground workings were encountered during the course of this work. <br /> 2.2 Site Grading <br /> Prior to Structural Fill placement, Ames conditioned the surface of the fill area. Golder <br /> monitored the preparation of the subgrade to verify that it met project specifications. <br /> Ames graded existing slopes and placed Structural Fill so that final slopes were no steeper than <br /> 2.5H:1 V. Prior to fill placement, the in-situ material was scarified to a depth of approximately <br /> 6 inches. Structural Fill was compacted with a minimum of four passes of a smooth drum <br /> vibratory compactor. <br /> Ames placed approximately 57,775 cubic yards of Structural Fill for site grading. <br /> 2.3 Subgrade Preparation <br /> Prior to Soil Liner Fill placement, Ames compacted the entire surface of the External Pond with <br /> a smooth drum vibratory compactor. The quality of the surface was then maintained until Soil <br /> Liner Fill was placed. <br /> I\00\2182\EXTERNAL POND RPT\FINALDOC Golder Associates <br />