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amecO <br />Earth & Environmental <br />After reworking of the "F" liner bench, the subgrade was inspected and approved for 80mi1 <br />(primary) replacement. The geomembrane that was previously pulled back was replaced <br />overlapping the 100mil (PSSA) primary a minimum of three feet. <br />B) Geomembrane Acceptance <br />1) VLF <br />After air testing was performed, the geomembrane in the anchor trench was accepted to allow <br />for backfilling. <br />C) Geomembrane Delivery <br />1) VLF <br />Two loads (24 rolls) of 100mil LLDPE smooth and single sided textured geomembrane were <br />delivered to site during the week. The loads were delivered on a flat bed truck in good <br />condition. The rolls were unloaded using a CAT 966 front-end loader with forks attached. The <br />geomembrane was placed on three pieces of HDPE pipe, stacked two rolls high. An AMEC <br />field representative inventoried the geomembrane and was present at all times during <br />unloading of the geomembrane. <br />D) Anchor Trench <br />1) VLF <br />Backfilling of the PSSA anchor trench continued between stations F8+00 (+/-) and F12+50 <br />(+/-). The anchor trench was backfilled using a John Deere 35D excavator, a CAT skid steer <br />loader, and laborers. Soil liner fill was moisture conditioned using a tandem axle water truck <br />and placed in the trench in one-foot compacted lifts. Compaction was performed using a <br />vibratory plate compactor. <br />CQA ACTIVITIES: <br />SUMMARY: <br />The CQA activities performed consisted of observing, documenting and recording the construction <br />activities of the contractor. <br />AMEC observed structural fill placement within the Phase 5 VLF fill area. Ambient temperatures were <br />monitored during fill placement. <br />AMEC inspected and approved subgrade prior to SLF placement within the Phase 5 VLF. <br />AMEC observed, performed necessary testing, obtained moisture samples, and assisted in the placement <br />and moisture conditioning of SLF material within the Phase 5 VLF. This included the PSSA anchor trench <br />backfill. <br />AMEC inspected and approved subgrade for geomembrane deployment within the Phase 5 VLF. <br />AMEC observed, logged data, and assisted in the installation of geomembrane within the Phase 5 VLF. <br />AMEC observed and inspected PSSA anchor trench excavation. <br />VLF Weekly Report WE 07.17.10.D