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Stage 1A Partial Final Closure February 2006 <br /> Forward Landfill Project No.021605.06 <br /> 3.0 CONSTRUCTION QUALITY ASSURANCE PROGRAM <br /> 3.1 Construction Components <br /> Vector provided CQA services on both earthworks and geosynthetic <br /> components of the Stage lA Closure construction. The earthwork tasks <br /> included compacted earthfill. The geosynthetics tasks included installing the <br /> high-density polyethylene (HDPE) geomembrane, geocomposite, geotextile, and <br /> 3-inch diameter HDPE pipe as part of the seep collectors. <br /> 3.2 CQA Documentation <br /> CQA documentation was prepared by Vector as part of the prescribed CQA <br /> duties and consisted of a system of daily record keeping including daily <br /> progress reports and a record of various test data sheets pertinent to the soils <br /> and geosynthetic components of the liner system. <br /> Table 1 included in this report summarizes the soils testing requirements per <br /> the CQA manual and technical specifications. The geosynthetics for the seep <br /> collectors were not tested, as the CQA manual and technical specifications did <br /> not require conformance testing. Within the table, information on the <br /> construction material type, the total quantity of material placed on the project, <br /> the test designation to be performed, the specified testing frequency, the <br /> required number of tests to be conducted, the actual number of tests <br /> conducted, and the actual testing frequency is listed. As shown on the table, <br /> the actual materials testing frequency on the project satisfies the number of <br /> tests required by the CQA manual. These tables are part of Vector's internal <br /> quality control program to ensure that the testing and required testing <br /> frequencies are satisfied on the project. <br /> is <br /> Vector Engineering, Inc. • 143E Spring Hill Drive•Grass Valley, CA 95945•(530)272-2448 <br /> -5- <br />