After the sewers have satisfactorily passed the tests required in this subchapter, and structures, backfilling and final paving are complete, the contractor, in the presence of the Engineer, shall clean each section of the sewer in the following manner:
(A) Sewers eight inches through 12 inches in diameter.
(1) High pressure hydraulic cleaning or jetting shall be used to remove dirt, grease, rocks, sand and other materials or obstructions from the sewer line and manholes.
(2) Sludge, dirt, sand, rocks, grease and other solid or semi-solid material resulting from the cleaning operation shall be removed at the downstream manhole of the section being cleaned. Passing materials to downstream sewer reaches is not permitted.
(B) Sewers 15 inches in diameter and larger. The Engineer shall visually inspect the sewer and if, in his or her opinion, cleaning is necessary, the contractor shall clean the sewer to the satisfaction of the Engineer. District may clean the sewer in these sizes at the contractor’s request and at his or her expense. The sewer shall be cleaned as described in division (A) above.
(C) Four-inch and six-inch private sewer laterals. When, in the opinion of the Engineer, the sewer is not clean, it shall be flushed or otherwise cleaned so as to properly serve its intended function. Clean private sewer lateral as described in division (A) above.
(Ord. 2019-02, passed 4-25-2019)