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ame0 <br />Lone Star Lining Company (Lone Star) of Arlington, Texas, completed the installation of <br />geomembrane liner from June 2011 through October 2011. Messrs. Ron Roberts and Jim <br />Smith represented CC &V as the Construction Manager and Construction Superintendent, <br />respectively, during the course of the work. All quantities and testing frequencies presented <br />in this report are current as of November 2011, which represents completion of the 2011 <br />Phase 5 VLF OSA 3 Portion, as detailed in this report. <br />1.2 Construction Quality Assurance /Construction Quality Control <br />AMEC provided CQA and CQC monitoring and testing services, and prepared this report <br />describing the monitoring and test results for the 2011 Phase 5 VLF OSA 3 Portion. <br />As -built drawings and supporting CQA monitoring and testing documentation are presented <br />in appendices attached to this report. <br />1.2.1 CQA Monitoring of Earthworks <br />AMEC provided CQC testing and CQA testing and monitoring of earthworks for the 2011 <br />Phase 5 VLF OSA a Portion. CQA testing and monitoring of earthworks was provided for <br />in -place materials in accordance with the AMEC Earthworks CQA Plan (Section 1400.1 of <br />the Specifications; see Appendix E). The earthworks material specifications for this project <br />are summarized in Table 1. CQC earthworks testing was provided to support the contractor <br />during the manufacture of materials and prior to material placement. The CQC test results <br />are not included in this report because these tests were intended to assist the contractor in <br />materials preparation rather than record testing. <br />AMEC provided CQA laboratory and field testing, and monitored earthworks construction <br />activities as follows: <br />• AMEC monitored topsoil stripping, site grading, including slope <br />re- contouring and fill placement, lift thickness, moisture conditioning, <br />temperatures, compactive effort, in -place nuclear density testing, and use <br />of suitable material for Structural Fill (SF). AMEC performed CQA <br />laboratory testing of grain size and Atterberg limits. <br />AMEC Earth & Environmental, Inc <br />2000 S Colorado Blvd 2 -1000 <br />Denver, CO 80222 <br />Tel 303 - 935 -6505 <br />Fax 303 - 935 -6575 www amec corn 2 <br />