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which is found to be defective . An damage to the pipe s Y 9 p p hall be repaired as directed by the Engineer. If any defective pipe is discovered after it has been installed , it shall be removed and replaced with a sound pipe in a satisfactory manner by the Contractor, at his own expense . C . Under no circumstances shall the pipe or accessories be dropped into the trench . D . Care shall be taken during transportation of the pipe such that it will not be cut, kinked or otherwise damaged . E . Ropes , fabric or rubber protected slings and straps shall be used when handling pipes . Chains , cables or hooks inserted into the pipe ends shall not be used . Two slings spread apart shall be used for lifting each length of pipe . ' F . Pipes shall be stored on level ground , preferably turf or sand , free of sharp objects which could damage the pipe . Stacking of the polyethylene pipe shall be limited to a height that will not cause excessive deformation of the bottom layers of pipes under anticipated temperature conditions. Where necessary due to ground conditions , the pipe shall be stored on wooden sleepers , spaced suitably and of such width as not to allow deformation of the pipe at the point of contact with the sleeper or between supports . G . Care shall be exercised when lowering pipe into the trench to prevent damage or twisting of the pipe . ' H . Pipe shall be laid to lines and grade shown on the Drawings with bedding and backfill as shown on the Drawings . I . When laying is not in progress , including lunchtime , the open ends of the pipe shall be closed by fabricated plugs , or by other approved means . J . Pipe shall be stored on clean level ground to prevent undue scratching or gouging . The handling of the pipe shall be in such a manner that the pipe is not damaged by dragging it over sharp and cutting objects . The maximum allowable depth of cuts , scratches or gouges on the exterior of the pipe is 10 percent of wall thickness . The interior pipe surface shall be free of cuts , gouges or scratches . K . Sections of pipe with cuts , scratches or gouges exceeding five percent of the pipe wall thickness shall be removed completely and the ends of the pipeline rejoined . L . The pipe shall be joined by the method of thermal butt fusion , as outlined in ASTM D2657 . All joints shall be made in strict compliance with the ' manufacturer's recommendations . 02627 - 5 FAUtilities\UTILITY - ENGINEERING\WTP - North RO\N RO Brine Line Discharge - UCP#2208\BID DOCUMENTS North County RO\BID DOCUMENTS\02627 Water Mains High Density Ployethylene.doc