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11. The system shall be thoroughly cleaned of all material, sand,rit <br />gravel, stones, fluids, construction debris, threats to its sanitation, and <br />other items that can generally be constructed as foreign material and <br />that would not be found in properly cleaned system. This cleaning <br />shall provide a smooth interior periphery of the pipe as a consequence <br />of the cleaning procedure and will end result in a conduit or pipe <br />virtually free of any material and fluids, other than those used for <br />the cleaning procedure, within the system. <br />1-2• Proper inline disinfection, in conformance with AWWA Specificatio <br />#651, is required to be provided as part of and/or incorporated n <br />into the initial cleaning of the system. Provision of both cleaning and <br />disinfection as one operation can provide the following advantages. <br />a) For large diameters or long runs of newly installed piping a <br />consequential reduction in the total volume of water to be used, <br />supplied and eventually channeled to an acceptable <br />disposal/containment area. <br />b) Assures total saturation of the interior pipe, fitting and valve <br />surfaces. <br />c) Its done under controlled and measurable chlorine is injected into <br />the system at a dosage rate reflecting the <br />inline fvelocity <br />volume capacity of the system thereby allowing for theuiform <br />distribution of the disinfecting agent throughout the system. <br />d) Cleaning and disinfecting a piping system as one operation <br />minimizes or eliminates the potential for failure of subsequent <br />bacteriological tests. <br />e) De -chlorination of the system contents in compliance with AWA <br />#651 can be readily and safely effected as an established part of the <br />cleaning/disinfecting procedure. <br />This procedure, if proposed, shall be identified within the <br />cleaning plan. contractor's <br />to <br />02002-4 <br />