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Phase IVc Summary No. 9 Page 3 043-2170 <br />• <br />C~ <br />• <br />Golder observed geomembrane deployment, documenting ambient temperature, panel dimensions, <br />thickness, seaming, tie-in overlap, and seam testing (trial seams, pressure testing). Geomembrane <br />installed in the Phase IVc OSA met the project specification. <br />Golder visually observed the placement of DCF in the Phase IVc OSA azea. Golder CQA monitors <br />(one monitor per dozer when dozers are greater than 50 feet apart) observed DCF placement and <br />verified minimum thickness of 2 feet for finish grade, and 4 feet for haul traffic (i,e, Caterpillar <br />Model 740 articulated trucks). <br />Golder observed placement of HVSC piping in the Phase IVc OSA, verifying installation and layout <br />per the project plans. <br />Golder visually observed removal of DCF on July 7 from the Phase IVc OSA azea, neaz the saddle <br />fill, to allow for inspection of the Phase IVc geomembrane due to equipment damage. Golder <br />marked the defect damage (35D) caused to the geomembrane, observed the repair and non- <br />destructive testing, and passed the repair during this reporting period. <br />Laboratory Tests <br />Golder obtained a QC sample of bentonite-amended soil liner fill (SLF-QC-15) during this reporting <br />period. Laboratory index testing was conducted on the sample of bentonite-amended SLF at the <br />Golder Soils Laboratory in Lakewood, Colorado and at the field trailer to verify suitability of <br />materials prior to use in the field. A summary of QC laboratory test results for SLF materials are <br />available at the Golder field trailer. <br />Golder obtained two QA samples of soil liner fill (SLFc-QA-08 and SLFc-QA-09) for laboratory <br />index testing. The samples tested met the requirements of the specifications and the results aze <br />presented in Attachment B. <br />Meetines <br />CC&V held a Weekly Contractors' meeting on <br />Environmental, Schedule, QC documentation, and <br />July 14, 2004 at 2:00 PM. <br />July 7, 2004. Items discussed included Safety, <br />CQA. The next weekly meeting will be held on <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 />Project Resident <br />Phau Nc 09 ]Wy4IWy 102004.doc Golder Associates lnc. <br />