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am&9 <br />per 4,000 cubic yards. The SLF CQA gradation results met project specifications and are <br />presented in Appendix H.1 and summarized in Table 7. <br />AMEC performed two (2) CQA gradations of DCF. The testing frequency (approximately <br />one test per 5,404 cubic yards) exceeded the minimum specified testing frequency of one <br />test per 20,000 cubic yards. The DCF CQA gradations met project specifications, and the <br />results are presented in Appendix HA and summarized in Table 8. <br />AMEC performed four (4) CQA gradation of SSF. The testing frequency (approximately one <br />test per 20,995 cubic yards) exceeded the minimum specified testing frequency of one test <br />per 50,000 cubic yards. The SSF CQA gradation met project specifications, and the results <br />are presented in Appendix H.1 and summarized in Table 9. <br />4.1.2 Moisture Content <br />AMEC measured oven moisture contents of SF, PBM, SLF, DCF, and SSF as part of the <br />CQA program. Moisture content data are presented in Appendix H.1 and Tables 5 through <br />9. <br />4.1.3 Atterberg Limits <br />AMEC performed Atterberg limits testing of the fill materials. All fill materials, with the <br />exception of SLF, were non - plastic. The SF, PBM, SLF, DCF, and SSF samples tested met <br />project specifications for Atterberg limits. Atterberg limits test data are presented in <br />Appendix H.1. <br />AMEC performed two (2) CQA Atterberg limits tests of SF. The testing frequency <br />(approximately one test per 16,900 cubic yards) exceeded the minimum specified testing <br />frequency of one test per 50,000 cubic yards. The CQA Atterberg limits performed on SF <br />met project specifications. The SF CQA Atterberg limits results are summarized in Table 5. <br />AMEC Environment & Infrastructure, Inc. <br />2000 S Colorado Blvd 2 -1000 <br />Denver, CO 80222 <br />Tel 303 - 935 -6505 <br />Fax 303 - 935 -6575 www.amec.com 16 <br />