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• monitoring of the subgrade preparation; • monitoring and testing of the Subgrade Fill (SF) soils during placement; • monitoring and testing of Clay Liner (CL) soils during placement, including collection of in situ soil samples for laboratory permeability testing; • reviewing geotechnical laboratory testing result for compliance with project specifications; • observing installation of the Granular Drainage material and Coarse Gravel for the leachate collection and removal system (LCRS); • monitoring placement of protective Operations Layer soils, and • monitoring the moisture conditioning and placement of the Earth Fill soils for the termination berms. The majority of the excavation was completed prior to Ausenco Vector arriving on-site. Therefore, only minor excavation and shaping of the slopes was required within WMU FU -10. Prior to excavation, clearing and grubbing activities were conducted for removal of deleterious materials such as grass, roots, or other organic vegetative materials. Upon completion of the excavation, RJA and Associates surveyed the as -built subgrade. The survey was reviewed by Ausenco Vector for completeness. 4.2 Subgrade Fill Subgrade Fill (SF) soils were used in FU -10 on the north area 5:1 slope, bench, and 2:1 slope, which overlays the former Austin Road Landfill; and also on the floor areas to shape the native subgrade for the LCRS ditches. The soil borrow was located adjacent the southeast area of FU -10 and was ripped and moisture conditioned before being collected by scrapers for placement. The Subgrade Fill (SF) soils were delivered to the bench by 637 scrapers and pushed up slope in 6' to 8° loose lifts by a D6 dozer. Eventually, the scrapers were able to traverse the 5:1 slope for fill placement. Compaction was achieved by a CAT 815 sheepsfoot compactor and scraper traffic. Additional moisture was added as needed by water truck. Rough grading was accomplished by the D6 w/GPS. Finish grading on the 5:1 slope was accomplished by a 140H blade; and by a D6 dozer on the 2:1 slope. Finish grade surveying was provided by RJA and Associates. CQA monitored activities during placement of the slope areas and performed 3 passing nuclear method moisture -density tests in Subgrade Fill (SF) soils placed on the 5:1 slope. The Specifications require that the Subgrade Fill (SF) soils be compacted to a minimum 90% of ASTM D1557 (modified Proctor), at a moisture content within 4% of the Proctor OMC (Optimum Moisture Content). CQA also monitored activities during the excavation of 3 potholes in the 5:1 slope to check the thickness of cover soils. Most of the Subgrade Fill (SF) soils were placed on the floor area. Placement of these soils was accomplished in the same manner as the fills on the slope areas. Scrapers delivered moisture conditioned Subgrade Fill (SF) soils from the borrow and spread it out in 6 -inch to 8 -inch loose lifts. Additional water was added in the fill as needed and compaction achieved by the 815 sheepsfoot and scraper traffic. Each lift placed on the floor was wheel -rolled by 2 loaded scrapers and then scarified by the 815 before the next lift was placed. During placement of the Subgrade Fill (SF) soils, the Ausenco Vector CQA monitor obtained 6 samples of these soils for laboratory testing. These test results were compared to the moisture - Date: October 2010 USVC0004800 Final Construction Quality Assurance Report