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C. Evaluate the existing pipe condition (post cleaning): The existing <br />pipe shall be evaluated upon completion of cleaning, to <br />determine the internal condition of the pipe. <br />Post -cleaning evaluation shall include: <br />Inspection by the. contractor, under the supervision of the engineer, of the <br />internal pipe and at existing butt joints will be completed. This will be <br />accomplished at the location of the flushing assembly at the down stream <br />end of the pipe, and at the midpoint, where a proposed fire hydrant assembly <br />will be cut in. The pipe shall be cut near an existing butt joint, so both the <br />internal wall and joint of the pipe can be inspected and evaluated. <br />The presence of any remaining scale, grit or other foreign material <br />shall be unacceptable, and the contractor shall evaluate the <br />material found, determine its components through laboratory tests, <br />and recommend and commence additional cleaning procedures <br />necessary to provide a smooth interior periphery of the pipe that <br />will result in a pipe virtually free of any material and fluids, and free <br />from the presence of biological, chemical or viral contamination. <br />The material shall be documented via field notes, photographs, <br />and specimens scraped or otherwise removed from the wall and <br />joint of the pipe and samples shall be laboratory tested to <br />determine its chemical and biological constituents. <br />If the pipe is found to be free of any scale, grit or other foreign <br />material, then the contractor shall commence pressure testing and <br />disinfection and bacteriological evaluation. <br />d. Pressure / leakage test: The water main shall be pressure and <br />leakage tested in accordance with AWWA c-605. <br />the existing water main, according to IRCDUS, was tested and <br />accepted for use in 1996, and has continually operated as a brine <br />transmission main, operating at approx. 22 psi. The existing main will <br />be pressure tested again, as part of the conversion methodology. <br />The main shall be pressure tested in accordance with AWWA <br />standards, and also shall meet additional pressure test standards <br />for HDPE pipe, as outlined in section 10.02 of the IRC dept. Of utility <br />services water and wastewater utility standards, July 2007. <br />02001-5 <br />