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Hydraulic conductivity testing of the Granular Drainage (GD) material indicated an average flow rate <br />greater than 1.0 cm/sec, which exceeds the requirement of 0.1 cm/sec. Hydraulic conductivity testing <br />of the Coarse Gravel (CG) drainage material indicated an average flow rate greater than 5.0 cm/sec, <br />which;exceeds the requirement of 1 cm/sec. <br />A summary of the laboratory testing conducted on the Granular Drainage (GD) layer and the Coarse <br />Gravel (CG) are presented in Tables 5 and 6, respectively. The laboratory test results of the <br />Granular Drainage (GD) pea gravel and Coarse Gravel (CG) testing are included in Appendix F and <br />Appendix G, respectively. <br />TABLE 6 <br />COARSE GRAVEL LABORATORY <br />4.6 Protective Operations Layer <br />Upon completion and approval of the LCRS Granular Drainage (GD) layer and deployment of 7 <br />oz/yd2 Filter geotextile, a one -foot thick lift of protective Operations Layer soils was placed on the <br />floor and also pushed 10° up the 2:1 slope at the north end of WMU FU -10. <br />The protective Operations Layer soils were placed by scrapers by spreading the on-site moisture <br />conditioned soil in a maximum 12 -inch loose lift over the Filter geotextile and LCRS Gravel Drain <br />(GD) material using a GPS controlled D6 dozer. The Ausenco Vector CQA monitor observed the <br />contractors activities during placement of the Operations Layer soils and verifies that no damage <br />occurred to the underlying geosynthetics. <br />4.7 Anchor Trenches and Termination Berms <br />Prior to commencement of geomembrane deployment, the Ausenco Vector CQA monitor observed <br />that the anchor trenches were constructed according to the details in the Plans and Specifications, <br />and were free of loose soil or deleterious material. After completion of geosynthetics deployment, the <br />Ausenco Vector CQA monitor observed and documented that the backfill for the anchor trenches was <br />placed and compacted in accordance with the project specifications, and that no damage occurred to <br />Date: October 2010 <br />USVC0004800 <br />Final Construction Quality Assurance Report 13 <br />