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ameO <br />2.5 Phase 5 Berm Modification Composite Liner System <br />The Phase 5 Berm Modification is comprised of a primary composite liner, that consists of a <br />minimum of 12 inches of compacted SLF overlain by a layer of 80 -mil double -sided textured <br />linear low density polyethylene ( LLDPE) geomembrane. <br />The installation of the primary geomembrane layer in the Phase 5 Berm Modification was <br />performed in August 2012. Lone Star installed approximately 18,797 square feet (neat line) <br />of 80 -mil double -sided textured LLDPE geomembrane to the project specifications. <br />Geomembrane installation for the Phase 5 Berm Modification is discussed further in <br />Section 3.1. Ames anchored geomembrane at the limits of the Phase 5 Berm Modification, <br />with the dimensions of each trench a minimum of 3 feet deep by 1 foot wide. Ames <br />backfilled the anchor trenches with suitable anchor trench backfill material. Ames placed <br />anchor trench backfill in maximum 12- inch -thick compacted lifts. Anchor trench backfill was <br />compacted with a hand - operated 500 -pound vibratory compactor and "Jumping Jack" <br />compactors to project specifications. <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 <br />9 <br />