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Vc"TOR NGINEERING INC. IL CONSTRUCTION FIELD T Project Name: Project No. Daily Field Report Sequence Number: Forward Landfill 2008 021605.08 15 Location of Work: Client Or Manager Date: Day of The Week: Manteca, CA Forward/AWI July 8,2008 1 Tuesday General Contractor: Liner Contractor: Project Engineer: Guinn Comanco Lewis Engineering General Foreman: Liner Superintendent: Other: Larry Source and Description of Fill Material: Weather: CQA Technician: On-Site light tan clayey soil Hot and breezy Evan Lindenbach Equipment on site: 815 compactor,tractor with BeGe blade and disc,5 x 637 scrapers, 1 x 627 scraper,2 x water trucks,D-6 dozer,D-6 dozer w/slo e-board,excavator,623 scraper, 140 H Motograd NOTES(Describe work completed during the day,any problems and their solutions): - Guinn is using GPS and a grade checker to monitor the grade of placed material. - Guinn is ripping and wetting the excavation area with a D-6, a tractor with discs,a Motograder, and a water truck. The material is being conditioned for a clay test area that will be constructed within the cell. CQA performed microwave moisture checks for the contractor to control moisture conditioning. - Guinn placed low permeability material on the northern part of the cell floor to make a test pad. Preparation of the test pad included wetting the subgrade and rolling it once with the 815 to create a rough surface for the clay to adhere to. Material from different parts of the borrow areas were placed and compacted at different moistures by scrapers with GPS (to control lift thickness), a Motograder, and an 815 compactor. The material was compacted with an 815 compactor to a final grade of about 1.5' thick. The material was then wheel rolled with loaded scrapers. - Three materials were used. Two visually different materials were placed at very high water contents (in excess of the 3%—6%above optimum range). One was called sandy clay, and the other was white clay. They were both compacted until a minimum of 90%compaction was reached. CQA then removed Shelby tubes for permeability testing. The final material was a wetter,but lighter material found in the cut. The final material had a lower compaction(with the same effort as the previous the materials),but retained a higher moisture content. Another Shelby tube was removed from this location. Bucket samples were also removed and sent to the soils testing lab. The three pads were each about 30' X 60' and located in the north end of the cell. - Buck was on-site today to survey the low-permeability soil liner subgrade on the cell floor. He verified that Guinn is high in a few places(Guinn will rectify these problems),but they are slightly below grade on the majority of the cell. Guinn will make the low permeability soil thicker than the required 2' to compensate. - CQA monitored moisture conditioning,placement,and compaction of the low permeability soil. - CQA monitored the borrow area for composition of material and moisture to aid Guinn with choice of material and moisture conditioning of material. - CQA removed a total of three(3) Shelby tubes for testing. Prepared By: Reviewed By: 4/23/03,Rev.0 1 of 2 C-2