(A) Selected backfill material shall be placed in trenches containing pipe simultaneously on both sides of the pipe for the full width of the trench in layers about six inches in depth and tamped thoroughly with a pneumatic tamper. The entire depth of the trench shall be thoroughly compacted with selected material and by means of hand or mechanically operated tampers, in layers of approximately six inches and shall be brought to the required surface grade without damage to the pipe.

(B) In lieu of the backfilling procedure specified above, river run gravel or crushed rock or gravel may be used for backfilling that portion of the trench more than six inches above the top of the pipe, provided the maximum size of material shall not exceed four inches in diameter and shall be of uniform graduation with 20% or more passing a ¼-inch square screen, ¾”- 0 crushed rock shall be placed in the final 12 inches of the trench and compacted in six-inch lifts, to a smooth finished grade equal to the existing surface.

(Ord. 1942, passed 11-10-97) Penalty, see § 94.99