2004-10-18_REVISION - M1980244 (27)

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Phase Nc Summary No. 8 Page 2 043-2170 Ames did not produce any bentonite-amended SLF at the screen and pug mill plant due to inclement • weather. Ames continued to produce Drain Cover Fill (DCF) material at the screen plant located near the secondary crusher. Poly-Flex did not deploy or seam any new geomembrane panels during this reporting period. Poly-Flex continued repair and testing of previously deployed and seamed panels from the prior week. Poly-Flex did not perform any destmctve fusion or extrusion peel and shear testing during this reporting period. Ames continued placement and grading of DCF material into the Phase Nc OSA in the western portion of the VLF, Saddle Fill azea. Ames placed DCF material onto approved geomembrane panels and High Volume Solution Collection (HVSC) piping per the project plans. A map of the azea worked during this reporting period is provided in Attachment C. Field Monitoring and Testine Activities Golder observed construction acfivities associated with Phase Nc earthworks. All construction materials and soil materials placed were verified as suitable, and construction methods were in accordance with project specifications. Golder observed excavation and construction of the LDT in Phase IVc for trench dimensions, slope, and materials used. • Golder observed seam testing (trial seams, pressure, vacuum and destructive) of previously deployed geomembrane. Geomembrane tested in the Phase Nc OSA met the project specifications. Golder visually observed the placement of DCF in the Phase Nc OSA azea. Golder CQA monitors (one monitor per dozer when dozers are greater than 50 feet apart) observed DCF placement and verified minimum thickness of 2 feet for finish grade, and 4 feet for haul traffic (i.e., Caterpillaz Mode1740 articulated trucks). Golder observed placement of HVSC piping in the Phase IVc OSA, verifying installation and layout per the project plans. Golder visually observed removal of DCF on July 2 from the Phase Nc OSA azea to allow for inspection of the Phase IVc geomembrane due to equipment damage. Golder mazked the defect damage (31C) caused to the geomembrane, observed the repair and non-destructive testing, and passed the defect during this reporting period. Laboratory Tests Golder obtained no QC samples during this reporting period. Golder obtained one QA sample of DCF (DCFc-03) for laboratory index testing. The sample tested met the requirements of the specifications and the result is presented in Attachment B. • an~rv<os i~~n-mqw zooa.a« GOIder Associates lnc.