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Testing Procedure shall be as follows: 1. Fill line slowly with water. Maintain flow velocity less than two (2) feet per second. 2. Expel air completely from the line during filling and again before applying test pressure. Air shall be expelled by means of taps at points of highest elevation. 3. Apply initial test pressure and allow to stand without makeup pressure for two to three hours, to allow for diametric expansion or pipe stretching to stabilize. 4. After this equilibrium period, apply the specified test pressure and turn the pump off. the final test pressure shall be held for one to three hours. 5. Upon completion of the "test, the pressure shall be bIE.' off from a location other than the point where pressure is monitored. The resident project representative shall witness the pressure drop at the point where the pressure is being monitored. This shall be recorded and shall be shown on the recorded pressure read-out that is submitted to the Engineer. Allowable amount of makeup water for expansion during the pressure test shall conform to Chart 6, Allowance for Expansion Under Test Pressure, Technical Report TR 31/9-79, published by the Plastic Pipe Institute (PPI). If there are no visual leaks or significant pressure drops during the final test period, the installed pipe passes the test. In any test of pipe laid disclosed leakage significant pressure drip greater than the allowed, the Contractor shall, at his/her own expense, locate and repair the cause of :eakage and retest the line. The amount of leakage which will be permitted shall be in accordance with AWWA C600 Standards. All visible leaks are to be repaired regardless of the amount of leakage. The Contractor must submit his plan for testing to the Engineer for review at least ten (10) days before starting the test. Cleaning At the conclusion of the work, thoroughly clean all of the new pipelines to remove all dirt, stones, and pieces of wood or other material which may have entered during the construction period. Debris cleaned from the lines shall be removed from the job site. If, after this cleaning, any obstructions remain, they shall be removed. END OF SECTION " 02627-7 DADIVISION 2:x2627 Force Plains - polyethylene Pipe.doc