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Phase IVb Weekly Summary No. 29 Paee 3 00.-_'?0. <br />Golder observed placement of secondary and tertian- HVSCS piping in the Phase Nb OSA. <br />verifi[ing construction and layout per the project plans. <br />Golder visually observed placement and grading of DCF in the Phase IVb OSA. Golder CQA <br />monitors (one monitor per dozer when dozers aze ereater than ~0 fr apart) observed DCF placement <br />and verified minimum thickness of 2 feet for finish grade. 4 feet for HVSCS primary pipe locations. <br />feet for 773 equipment_ and 10 feet for haul road construction and equipment. <br />Golder visually observed removal of DCF from the Phase I /ADR liner expansion tie-in area. north <br />of the ADR and CC&V Lab building. Golder marked damage caused to the geomembrane for <br />subsequent repair during ADR geomembrane tie-in construction. <br />Golder observed anchor trench excavation in the Phase IVb OSA for proper location and dimension <br />(2~ wide by 3' deep). Anchor trench excavation met or exceeded the requirements of the <br />specifications. <br />Golder observed geomembrane deployment and repairs. 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 Nb OSA met project specifications. <br />Laboratory Tests <br />Golder obtained QA samples of Drain Cover Fill (DCFb-15), and Soil Liner Fill (SLFb-2l). <br />Laboratory index testing was conducted on samples of Drain Cover Fill (DCFb-1~), and Soil Liner <br />Fill (SLFb-20 and SLFb-21) to verify suitability of materials used. Laboratory test results are <br />presented in Attachment B. <br />Meetings <br />CC&V held a Weekly Contractors' meeting on August 12. 2003. Items discussed included Safety. <br />Environmental, Schedule. and CQA. The next weekly meeting will be held on August 19, 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 />Ron DiDonato <br />Project Resident <br />PM1aSe i~b'_9 dmnu[I O.Wrzus[16. ]C03 WRICS ~iW~. tnf.. <br />