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<br /> <br />Forward Landfill WMU FU-23 02535 3 PIPES AND TANKS <br /> <br /> 2.4 HDPE TANKS A. The HDPE tanks shall be a corrugated high density polyethylene pipe with a smooth interior and shall be Advanced Drainage Systems (ADS) N-12 or equivalent. <br /> B. The polyethylene compound shall be suitably protected against degradation by <br />ultraviolet light by means of carbon black, well dispersed by precompounding in a <br />concentration of not less than 1.5 percent. <br /> <br /> C. The HDPE tanks shall meet the requirement, sizes, and perforation pattern shown <br />on the construction drawings. <br /> <br /> <br />PART 3 EXECUTION <br /> <br />3.1 GENERAL <br /> <br /> A. All pipes shall be cut, fabricated, and installed in strict conformance with pipe <br />manufacturer's recommendations. Joining, laying, and pulling of polyethylene <br />pipe shall be accomplished by personnel experienced in working with <br />polyethylene pipe. <br /> <br /> B. Pipe shall be joined and placed in such a manner as to prevent damage to the <br />HDPE Geomembrane Lining and other underlying geosynthetics. <br /> <br /> <br />3.2 TRANSPORTATION <br /> <br /> A. Care shall be taken during transportation of the pipe such that it is not cut, kinked, <br />or otherwise damaged. <br /> <br />3.3 STORAGE <br /> <br /> A. Pipes shall be stored on level ground, preferably turf or sand, free of sharp objects <br />that could damage the pipe. Stacking of the polyethylene pipe shall be limited to <br />a height that will not cause excessive deformation of the bottom layers of pipes <br />under anticipated temperature conditions. Where necessary due to ground <br />conditions, the pipe shall be stored on wooden sleepers, spaced suitably and of <br />such widths as not to allow deformation of the pipe at the point of contact with the <br />sleeper or between supports. <br /> <br />3.4 HANDLING PIPE <br /> <br /> A. The handling of the joined pipeline shall be in such a manner that the pipe is not <br />damaged by dragging it over sharp and cutting objects. Ropes, fabric, or <br />rubber-protected slings and straps shall be used when handling pipes. Chains, <br />cables, or hooks inserted into the pipe ends shall not be used. Two slings spread