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Phase IVb Weekly Summary No. IO Page 2 003-2203 <br />Phase N c <br />Ames continued placement of Structural Fill (SF) in the Phase Nc area Ames placed SF down slope to <br />the temporary stockpiles, above and below the old Connolly haul road elevation. The SF materials cut <br />from upsiope were temporarily stockpiled above the Phase FV b/c temporary diversion channel. <br />Ames performed excavation remediation activities at underground workings UG-304, UG-504, UG- <br />269, and UG-274. Workings were designated as "Shallow" or "Deep" as defined in the drawings, <br />and will be remediated accordingly. <br />Ames placed Cemented Rockfill (CR) at UG-304 <br />Ames constructed a geogrid cap over UG-269. Ames placed two layers of geogrid in accordance <br />with the drawings and specifications. <br />Ames placed Structural Fill (SF) over previously remediated working UG-269. <br />Field Monitoring and Testine Activities <br />Golder observed construction activities associated with Phase N earthworks. All construction <br />materials and soil materials placed were verified as suitable, and construction methods were in <br />accordance with project specifications. Removal of oversized and deleterious material from all fill <br />azeas was observed. Golder observed Structural Fill (SF) cut and placement in Phase IV for <br />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. Workings were designated as "Shallow" or "Deep" as defined in <br />the drawings and will be remediated accordingly. <br />Golder sampled and shipped nine lots of geogrid to the Golder Soils laboratory in Atlanta for MQA <br />testing. Geogrid shipped by Ames arrived on site on February 6, 2003. <br />Golder observed placement of SF, geogrid, and CR for underground working remediation. These <br />materials were placed in accordance with the drawings and specifications into excavated or open <br />underground workings. Golder previously obtained samples of SF for laboratory testing. Materials <br />supplied met specifications. <br />Laboratory Tests <br />Golder obtained a sample of Soil Liner Fill (SLF) at the Ames processing area and shipped the sample <br />to the Golder Soils Lab in Denver for QC index testing. Materials supplied met project specifications. <br />Meetines <br />CC&V held a Weekly Contractors meeting on February 11, 2003. Items discussed included Safety, <br />Phase lVb lOFeb02-I5, 2003.doc Golder Associates fnc, <br />