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Phase IVb Weeklv Summary No. J4 Page 3 003-2203 <br /> <br />Golder observed and documented remediation activities associated with the Phase IV underground <br />working construction. V <br />Golder observed anchor trench excavation in the Phase IVb PSSA for proper location and dimension <br />(2' wide by 3' deep). Anchor trench excavation met or exceeded the requirements of the <br />specifications. Golder observed anchor trench backfill in the Phase IVb PSSA for lift thickness and <br />proper method of compaction. <br />Golder observed construction of the Primary Underdrain in Phase IVb for trench dimension (~' wide <br />by 3' deep), slope (minimum 1 %), materials, and geotextile overlap. <br />Golder observed geomembrane deployment, documenting ambient air temperature, panel <br />dimensions, thickness, seaming, tie-in overlap, and seam testing (trial seams, pressure, vacuum, and <br />destructive). Geomembrane placed in the Phase IVb area met the project specifications. <br />Golder visually observed the placement of LVSCF in the Phase IVb PSSA azea. Golder CQA <br />monitors (one monitor per dozer when dozers aze greater than 50 ft apart) observed LVSCF <br />placement. <br />Laboratory Tests <br />Golder did not obtain any QA samples; however, laboratory testing of QC samples was conducted to. <br />confirm suitability of materials used during this reporting period. <br />Meetings <br />CC&V held a Weekly Contractors meeting on April 22. Items discussed included Safety, <br />Environmental, Schedule, and CQA. The next weekly meeting will be held on April 29, 2003 at <br />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 />PhueNb 14 Ap20.Ap26, 20°3.doc Golder Associates lnc. <br />