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Phase IVc Summary No. 19 Page 3 043-2170 <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 specifications. <br />Golder visually observed the placement of DCF in the Phase IVc OSA area. 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 tree project plans. <br />Laboratory Tests <br />Golder obtained one QA sample of drain cover fill (DCFc-QA-9) for laboratory index testing. The <br />completed test met the requirements of the specifications and the results aze presented in Attachment <br />B. <br />Meetings <br />CC&V held a Weekly Contractors' meeting on September 14, 2004. Items discussed included <br />Safety, Environmental, Schedule, QC documentation, and CQA. The next weekly meeting will be <br />held on September 21, 2004 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 A. <br />Sincerely, <br />~e~ ~~~ <br />Ron DiDonato <br />Project Resident <br />rte rvo is s~x~xaz-s~~~x~~ezooa Golder Associates lnC. <br />