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Phase IVb Week]y Summary No. 12 Page 2 003-220; <br />Ames used a Caterpillar D9 dozer to perform cut grading on the west slope of the Substation Hill in <br />preparation of final grading for future east end berm construction. <br />Ames replaced the piping and Structural Fill (SF) ramp in the Phase fV b/c temporary diversion <br />channel for access into the Phase IVc construction area. <br />Phase N c <br />Ames used a Caterpillaz 312 Excavator to continue excavation of the UG-278 / 279 ~eogrid layout <br />area. y <br />Field Monitoring and Testine Activities <br />Golder observed construction activities associated with Phase IV earthworks and underground <br />working remediation. All construction materials and soil materials placed were verified as suitable, <br />and construction methods were in accordance with project specifications. Removal of oversized and <br />deleterious material from all fill areas was observed. Golder observed Structural Fill (SF) cut and <br />placement in Phase N for materials, lift thickness, moisture content, and compactive effort. <br />Golder observed and documented excavation remediation activities associated with the Phase IV <br />underground working construction. <br />Laboratory Tests <br />Golder did not obtain any samples or perform any laboratory testing during this reporting period. <br />Meetings <br />CC&V held no Weekly Contractors meetings during this reporting period. The next weekly meeting <br />will be held on April 15, 2003 at 10:00 AM. <br />Golder Personnel On-Site <br />A summary of all Golder CQA personnel on site during this reporting period is presented in <br />Attachment A. <br />Sincerely, <br />~'~~-!.~ <br />Ron DiDonato <br />Resident CQA Monitor <br />PhazelVb t2Mar09-Apr122003 EOC Golder Associates lnc. <br />