2009 Wildwood Water Utility Specifications
3.2FIRE HYDRANT LOCATIONS
Hydrants must be within 500 feet of each other along road or street lines. Hydrants will be located in accordance with WWU drawings. The steamer will be turned to face the road or street for easy access. The elevation of the hydrant will be such that the bottom of the steamer connection will not be less than thirteen (13) inches from the finished grade or top of the curb. A 3/4 inch stone sump two (2) feet in length, width and depth will be installed under each fire hydrant to drain after is has been turned off. A concrete thrust block will be poured behind the tee and also at the base of the hydrant or, if so desired, the hydrant may also be rodded to eliminate the requirement of the thrust block. (SEE FIGURE 9)
3.3WATER AND SEWER LINE SEPARATION (N.J.A.C. 7:10-12.36)
Water and sewer mains normally will be separated at a distance of at least ten (10) feet horizontally. If such a lateral separation is not possible, the pipes shall be laid in separate trenches (step trenches are prohibited) with the sewer at least eighteen (18) inches below the bottom of the water main; and or such other separation as approved by the WWU shall be made. In general, the vertical separation at a crossing of water and sewer lines shall be at least eighteen (18) inches. Where this is not possible, the sewer shall be constructed of cast iron pipe using mechanical or slip on joints for a distance of at least ten (10) feet on either side of the crossing or suitable protection shall be provided, such as concrete encasement of the sanitary sewer for at least ten (10) feet either side of the water pipe. This encasement is to be six (6) inches thick.
3.4STERILIZATION AND TESTING
A. Before new water lines or appurtenances are put into service, they shall be completely sterilized with chlorine. The chlorine shall be introduced and distributed into the new pipe line by suitable and approved means, and in such a manner that it shall reach all interior surfaces of the pipe and all fittings, valves, and appurtenances. Sterilization may be done in connection with pipe testing or independently, as may appear more practical. The manner and method of the introduction of chlorine must be approved by the WWU. The actual chlorine residual test shall be performed by a NEW JERSEY STATE CERTIFIED TESTING LABORATORY and paid for by the contractor. Acceptable methods of disinfection shall conform to AWWA STANDARDS C651-86 and C652-86 or the latest revision, and will include the following:
1. Contact with a chlorine solution of a concentration not less than fifty (50) parts per million, for a minimum contact period of twelve (12) hours.
2. Contact with a chlorine solution of a concentration not less than twenty (20) parts per million, for a minimum contact period of twenty four (24) hours.
Thorough wetting of the surfaces to be disinfected by means of brushing or spray application of a chlorine concentration not less than five hundred (500) parts per million, with a minimum contact period of one(1) hour.
B. Following chlorination, all treated water shall be thoroughly flushed from the pipe until the replacement water throughout it’s length shall, upon testing be proven comparable to the quality of water served the public from the existing water supply system. The contractor shall pay for BACTERIALOGICAL TESTS by a NEW JERSEY STATE CERTIFIED LABORATORY. Should the tests prove unacceptable, the contractor shall rechlorinate the pipe and perform additional testing. Any section of pipe line which is drained or emptied of water at any time or for any purpose in connection with the work, whether newly laid or part of the existing water main system shall be sterilized as specified above before being returned to service. Existing water service shall not be interrupted unless necessary for the completion of the work, and then only in accordance with the requirements and approval of the WWU. When service interruption is required, the contractor shall give the WWU a 24 hour advance notice to allow the contractor sufficient time to notify the WWU customers affected by the disruption. These interruptions are to be kept to a minimum.
C. All test results must be reported to the WWU as soon as the testing is completed.