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3.3 INSTALLATION <br />• <br />A. Deployment. <br />1. <br />Give careful consideration to the timing and temperature during deployment. <br />The GEOSYNTHETICS CONTRACTOR shall verify that (a) there is no <br />bridging or stresses in the geomembrane and (b) there are no wrinkles in the <br />geomembrane that will fold over when covering with soil material. Ideally, <br />deployment, welding, and covering should all occur at the same temperature. <br />In a practical sense the GEOSYNTHETICS CONTRACTOR should strive to <br />perform these activities within as narrow a temperature range as practical, <br />and avoid these activities during peak hot or cold conditions. <br />2. <br />Panel Identification: Assign each panel an identifying code number of letter <br />consistent with the GEOSYNTHETICS CONTRACTOR's submitted panel <br />layout drawing. The coding is subject to approval by the QA/QC <br />CONSULTANT. <br />3. <br />Daily Panel Deployment: Deploy no more panels in one shift than can be <br />welded or secured during that same shift. <br />4. <br />Do not deploy in the presence of excessive moisture, fog, dew, precipitation, <br />ponded water, or high winds. <br />5. <br />Do not damage geomembrane by handling, by trafficking, or leakage of <br />hydrocarbons or any other means. <br />6. <br />Do not wear damaging shoes or engage in activities that could damage the <br />geomembrane. <br />7. <br />Unroll geomembrane panels using methods that will not damage, stretch or <br />crimp geomembrane. Protect underlying surface from damage. <br />8. <br />Use methods that minimize wrinkles and differential wrinkles between <br />adjacent panels. <br />9. <br />Remove wrinkled or folded material. <br />10. <br />Place ballast on geomembrane that prevents uplift from wind. <br />11. <br />Use ballast that will not damage geomembrane. <br />12. <br />Protect geomembrane in area of heavy traffic by placing protective cover <br />which is compatible with and will not damage geomembrane. <br />13. <br />Repair damage to subgrade or other underlying materials prior to completing <br />deployment of geomembrane. <br />14. <br />Do not allow any vehicular traffic directly on geomembrane. <br />15. <br />Visually inspect geomembrane for imperfections. Mark faulty or suspect <br />areas for repair. <br />16. <br />Install material to account for shrinkage and contraction while avoiding <br />wrinkles. Install material stress -free with no bridging before it is covered. <br />Add material as needed to avoid bridging. <br />17. <br />Before wrinkles fold over, attempt to push them out. For wrinkles that <br />cannot be pushed out, cut them out and repair cuts prior to burial or at the <br />direction of the QA/QC CONSULTANT. <br />18. <br />Use slip sheet when deploying textured geomembrane over geotextiles to <br />avoid damaging geotextile fibers. <br />19. <br />Single -sided 60 -mil textured HDPE geomembrane shall be installed in <br />continuous contact with the underlying material and with the textured side <br />facing down. <br />Forward Landfill WMU FU -14 HIGH DENSITY POLYETHYLENE <br />02778 <br />13 (HDPE) GEOMEMBRANE <br />