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Colorado Legacy Land Former Schwartzwalder Mine <br /> North Waste Rock Pile Diversion Channel <br /> 2.02 Geomembrane Manufacturing <br /> A. The reinforced polyethylene geomembrane shall be supplied in panels, which shall be of <br /> maximum size to provide the largest manageable sheet for the fewest seams. <br /> B. Factory seams are produced by thermal sealing methods and shall have a minimum seam <br /> width of 1 '/2 inch scrim to scrim. <br /> C. Factory seams are 100% visually inspected and destructive testing is done to verify <br /> quality compliance. <br /> D. Labels on the panels shall identify the thickness,length,width, lot and panel numbers, <br /> and name of Manufacturer. <br /> E. Factory pre-assembled panels are accordion folded and rolled on a cardboard core. Rolled <br /> panels are wrapped in a protective layer for shipment. <br /> F. Table 1 lists required reinforced polyethylene geomembrane properties. <br /> Table 1 <br /> REQUIRED PHYSICAL PROPERTIES OF 45 MIL TEXTURED REINFORCED <br /> GEOMEMBRANE <br /> Property(') MQC Testing Test Method Requirement <br /> Frequency <br /> Thickness per roll ASTM D5994 nominal 45 mils(3) <br /> Asperity Height min ave Every Second Roll ASTM D7466 16 mils <br /> Weight Per 20,000 lb ASTM D751 200 lbf/msf <br /> Tongue Tear Strength Per 45,000 lb ASTM D5884 1001bf <br /> Grab Tensile Strength Per 20,000 lb ASTM D7004 275 lbf <br /> Tensile Elongation at Break Per 45,000 lb ASTM D7004 22% <br /> Puncture Resistance Per 45,000 lb ASTM D4833 108 lbf <br /> Standard OIT or per GRI-GM10 ASTM D3895 100 min <br /> High Pressure HPOIT ASTM D5885 400 min <br /> 2.03 Tests,Inspections,and Verifcations <br /> A. Sheet Material: Geomembrane sheets shall be tested in accordance with the approved <br /> MQC manual. As a minimum, MQC testing shall be conducted at the frequencies shown <br /> in Table 1. Sheets not meeting the minimum requirements specified in Table I shall not <br /> be sent to the site. <br /> PART 3 - EXECUTION <br /> 3.01 Subgrade Preparation <br /> A. The subgrade shall be constructed so as to cause minimimal stress on the geomembrane. <br /> It shall not be susceptible to differential settlement. <br /> Section 026617-Geomembrane Page 5 <br />