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NOTES . 1 . A temporary jumper connection is required at all connections between existing active water mains and proposed new water main improvements . 2 . The Temporary Jumper Detail (W - 12A) is to be used for filling any new water main of any size from the existing active water mains and for the flushing of new mains up to 6" diameter (2 . 5 FPS minimum velocity) and for pulling bacteriological samples from any new water main of any size . 3 . The jumper connection shall be maintained until after the filling , flushing , testing and disinfection of the new main has been successfully completed and clearance for use from the Florida Department of Environmental Protection ( FDEP ) and other pertinent agencies has been received . Adequate thrust blocking and/or restraints shall be provided temporarily, as required . 4 . Pipe and fittings used for connecting the new pipe to the existing pipe shall be disinfected prior to installation in accordance with AWWA C651 , LATEST EDITION . The tapping sleeve and exterior of the main to be tapped shall be disinfected by spraying or swabbing per section Two of AWWA C651 . The use of tablets is strictly prohibited . 5 . The Jumper connection shall also be used to maintain a minimum pressure of 20 PSI in the new mains continuously after disinfection and until FDEP clearance letter is obtained . 6 . The Contractor shall provide documentation demonstrating that the double check backflow prevention device is in good working order at the time of installation , and provide documentation that the double check backflow prevention device has been tested in the last 12 months , and is in good working order one year from installation by a qualified backflow technician as approved by IRCDUS . 7 . Except as required to flush lines greater than 6 " diameter, the tie- in valve shall remain closed and shall be locked in the closed position by the utility company . The tie- in valve shall remain locked closed until the new system has been cleared for use by the FDEP and all other pertinent agencies . 8 . Upon receipt of clearance for use by FDEP and all other pertinent agencies , the Contractor shall remove the temporary jumper connection . The corporation stops are to be closed and plugged with 2" brass or PVC stops . 9 . All installation and maintenance of the temporary jumper connection and associated backflow prevention device , fittings , valves , etc. , shall be the responsibility of the Contractor. 10 . If the water main to be flushed is greater than 6" diameter or such length that a full pipe flush at the 2 . 5 FPS velocity cannot be accomplished , the following procedure shall be utilized . a ) Install pressure gauges as indicated on Temporary Jumper Detail (W - 11 ) . b ) Open all downstream valves in the new system prior to flush . c) Flush new water main thru tie- in valve maintaining a 10 +/- PSI pressure differential between gauges during flush . d ) IRCDUS personnel , in the presence of the Engineer of Record shall operate tie- in valve to insure that the required pressure differential is maintained . Lrt INDIAN RIVER COUNTY VER TEMPORARY NON DEPARTMENT OF Q z JUMPER DETAIL W - 12 UTILITIES SERVICES N1 n T F '