(A) All debris, wasted concrete, lumber scraps or other foreign matter that may be in the backfill material shall be removed prior to beginning the backfill.
(B) Backfilling shall be accomplished by one of the following methods:
(1) Backfill shall be placed in uniform layers of eight inch maximum thickness and each layer shall be compacted to a density equal to the adjacent undisturbed soil. If necessary to obtain proper density, the backfill material shall be moistened. If the base and surface are to be put in place immediately after backfilling, the excavation shall be backfilled to the subbase level. If there is to be a lapse of time between the completion of the backfill and the restoration of the paving base and surface, the excavation shall be backfilled to the grade of the adjacent paving surface. In unimproved alleys or streets, the compacted backfill shall be brought up to grade;
(2) The excavation shall be completely backfilled and the water jetting method used to settle and backfill material. Excess water in any excavation shall be cause for rejection of the water jetting method and a requirement to use pneumatic tamps. Prior to the restoration of the paving base and surface, the backfill material shall be removed from the excavation to a point of two feet below the adjacent paving surface and replaced in uniform layers of eight inch maximum thickness. Each layer shall be compacted to a density equal to the adjacent undisturbed soil.
(3) No base material shall be placed in the excavation until the subbase is stable and free of excess moisture. Any water needed in the backfilling of a street excavation may be taken from a city fire hydrant equipped with a meter, if approved by the City Manager. The person, firm or organization using the water will be billed for same.
(`87 Code, § 20-27) (Am. Ord. 1988-2, passed 3-29-88)