Service sewers shall be tested by plugging the line on the upstream side of the inspection tee and completely filling the system to the lowest fixture, drain, or cleanout within the building itself.
(Ord. 198 § 8.02, 1975)
The rate of leakage in the service sewer shall not exceed the following amounts per 100 feet of pipe:
4-inch pipe:
1.6 gal./hr.
6-inch pipe:
2.4 gal./hr.
(Ord. 198 § 8.04, 1975)
The rates of leakage given in TMC § 13.30.415 shall be used for a head of water at the low point of the system up to and including 15 feet. If a greater head would occur, due to the elevation of the building above the sewer, an additional tee or tees may be inserted in the line and the service sewer tested in sections. In this case, each section so tested shall meet the foregoing requirements.
(Ord. 198 § 8.05, 1975)
A tentative test may be made by the side sewer contractor or owner prior to backfilling the trench at the time of inspection of the pipe-laying; however, the final acceptance test for leakage shall be made following backfill of all but the inspection tee, so that the complete backfill load will be on the pipe.
(Ord. 198 § 8.06, 1975)