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' Phase ]Vb Weekly Summary No. 6 Pale 3 003-2203 <br />Golder observed placement of SF, CSB, and CP for underground working remediation. These materials <br />were placed in accordance with the drawings and specifications into excavated or open underground <br />workings. Golder previously obtained samples of SF for laboratory testing. Materials supplied met <br />specifications. Ames conducted field testing and sampling of CSB and CP concrete as per <br />specifications, and will supply 28-day strength results. <br />Golder observed backfill of the geomembrane anchor trench for proper dimensions, lift thickness, <br />compaction, and use of suitable material. <br />Golder observed geomembrane deployment repairs, documenting ambient air temperature, seaming, <br />tie-in overlap, and seam testing (trial seams, pressure, vacuum, and destructive). Geomembrane <br />placed in Phase IVb met specifications. <br />Golder observed placement of LVSCF full time for correct material, road thickness, drop height, and <br />Liner damage. LVSCF was placed in accordance with the specifications. <br />Golder observed placement of Low Volume Solution Collection piping for proper materials, <br />connections, and location. <br />Golder observed and documented confirmation drilling activities associated with the Phase IV <br />construction. Full-time monitoring was given to confirmation drilling of underground workings, <br />including logging holes, marking drill locations, surveying holes, and documenting underground <br />workings encountered. <br />Laboratory Tests <br />Golder obtained one sample of Soil Liner FiII (SLFb-07) and one sample of LVSCF (LVSCFb-02} <br />for laboratory testing. The samples tested met the requirements of the specifications and results are <br />presented in Attachment B. <br />Meetings <br />CC&V held a Weekly Contractors meetings on November 12`x' and 19`h. Items discussed included <br />Safety, Environmental, Schedule, and CQA. The next weekly meeting will be held on December <br />3rd, 2002 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 C. <br />Sincerely, <br />% ~~° f'' /%r// <br />~ ~~ <br />C~/ ~ ~` <br />t- , . <br />Bob Nichols <br />Resident CQA Monitor <br />PhaselW 6NOV10.30.doc Golder Associates Inc. <br />