Laserfiche WebLink
Colorado Legacy Land Former Schwartzwalder Mine <br /> North Waste Rock Pile Diversion Channel <br /> 6. In gusty conditions that might unexpectedly lift the liner no one shall walk on the <br /> liner until it has been effectively ballasted. <br /> 7. Large prefabricated panels shall be unrolled and unfolded as indicated in the <br /> deployment instructions included with the panel.Unfolding shall be done with a <br /> man every 15 to 30 ft. depending on the size/weight of the panel. <br /> 8. During deployment, folds and kinks in folds shall be carefully examined for <br /> thinning and cracking damage particularly at low temperatures. <br /> 9. Deployment will generally commence on side slopes and proceed down-gradient. <br /> C. Anchor Trenches: <br /> 1. Geomembrane shall be placed down the front wall and across the bottom of <br /> anchor trenches. The geomembrane shall not be folded in the anchor trench. <br /> 2. The front edge of the anchor trench shall be rounded,with no sharp stones that <br /> might damage the liner. There shall be no loose stones/rocks in the anchor trench <br /> and no standing water. The Contractor shall be responsible for maintaining the <br /> anchor trenches in good condition for the installer. <br /> 3. The anchor trench shall be filled with soil that does not damage the liner and that <br /> will not damage the liner when compacted. The soil shall be compacted <br /> sufficiently to preclude standing water in the trench. If there are holes in the liner <br /> on the front face of the anchor trench, and the soil is not compacted such as to <br /> preclude standing water,water might seep through the holes and erode the slopes. <br /> D. Welding/Joining <br /> 1. General <br /> a. When the weld is sectioned there should not be a well-defined interface, <br /> nor should there be any particulates or voids along the weld line. There <br /> should be no crimps due to overheating. The adjacent geomembrane <br /> should not be overheated and oxidized such that it becomes brittle. <br /> b. Acceptable field welding methods are thermal fusion and extrusion. The <br /> thermal energy for fusion welding can be provided by hot wedges,hot <br /> air, or a combination. Any other method(laser,ultrasonic, etc.)must be <br /> approved by the Manufacturer and the Engineer. <br /> C. Chemical bonding is not acceptable. <br /> d. Extrusion welding rod should be made from the same resin class as the <br /> bonding surface of the geomembrane surfaces being extruded to. <br /> 2. Trial Welding <br /> Section 026617-Geomembrane Page 7 <br />