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ameo <br />• <br />100-mil double-sided textured LLDPE geomembrane, placed over the <br />LVSCF. <br />• The HVSCS is installed over the primary liner. The HVSCS consists of <br />HVSCS piping and DCF (minimum of 2 feet), along with the HVSCS riser <br />base plates and SDCF in the PSSA sump. <br />The installation of the secondary layer of geomembrane in the 2010 Phase 5 VLF began in <br />May 2010 and was completed in August 2010. Lone Star installed approximately 256,752 <br />(neat line) square feet of 100-mil smooth LLDPE, approximately 1,385,512 (neat <br />line) square feet of 100-mil single-sided textured (texture face down) LLDPE geomembrane, <br />and approximately 65,055 (neat line) square feet of 100-mil double-sided textured LLDPE <br />geomembrane. <br />The LVSCS was installed above the secondary geomembrane layer, including placement of <br />LVSCF, construction of the LVSCS sump, and installation of the LVSC risers. The LVSCS <br />is discussed further in Section 2.10. <br />. The installation of the primary layer of geomembrane in the 2010 Phase 5 VLF began in July <br />2010 and was completed in October 2010. Lone Star installed approximately 1,500,723 <br />(neat line) square feet of 100-mil smooth LLDPE, approximately 113,367 (neat line) square <br />feet of 100-mil single-sided textured LLDPE, and approximately 13,895 (neat line) square <br />feet of 100-mil double-sided textured LLDPE geomembrane, including geomembrane in the <br />anchor trench and overlap. <br />A minimum of 2-foot layer of DCF was then placed over the primary geomembrane, along <br />with the HVSCS piping and riser base plates. <br />Geomembrane installation for the PSSA is discussed further in Section 3.4. Ames anchored <br />geomembrane at the limits of the Phase 5 PSSA in an anchor trench, with the dimensions of <br />each trench a minimum of 3 feet deep by 1 feet wide. Ames backfilled the anchor trenches <br />with suitable anchor trench backfill material or with SLF material were the primary <br />geomemrbane covers the anchor trench. Ames placed anchor trench backfill in maximum <br />12-inch-thick compacted lifts. Anchor trench backfill was compacted with a hand-operated, <br />• <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.com 17