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Phase IVb Weekly Summary No. 12 Page 2 003-2203 <br />Ames used a Caterpillar D9 dozer to perform cut grading on the west slope of the Substation Hilt 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 IV b/c temporary diversion <br />channel for access into the Phase IVc construction area. <br />Phase IV c <br />Ames used a Caterpillar 312 Excavator to continue excavation of the UG-278 / 279 geogrid layout <br />azea. <br />Field Monitorine and Testing 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 IV 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 />Meetines <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 />Ron DiDonato <br />Resident CQA Monitor <br /> <br />PIuu1Vb 1'_Mar09-AOrl2'--003 Golder Associates lnc. <br />