Any utility trench or other excavation made within the limits of a proposed public right-of-way shall be bedded and backfilled according to the following:
(a) All utility lines to be taken over by the City shall be bedded and backfilled from a point six inches below the pipe to a point six inches above the pipe with #57 aggregate, as specified in Section 703 of The Ohio Department of Transportation Construction and Material Specifications. This applies to sanitary sewer lines, water lines and storm sewer lines.
(b) From the top of the initial backfill to the pavement sub-base, the trench shall be backfilled using any of the following:
(1) A controlled density backfill, such as:
A. K-crete;
B. Flash-fill; or
C. Other backfill, as approved by the City Engineer; or
(2) O.D.O.T. Item 310, as listed in Chapter 703 of The Ohio Department of Transportation Construction and Material Specifications, compacted in two-foot lifts.
(c) Materials excavated from utility trenches or other excavations shall only be used for backfill within the proposed right-of-way if approved in writing by the City Engineer. This material must be compacted on one-foot lifts. Wet or non-compactable materials will not be approved for this use.
(d) Sieve analysis or compaction density testing may be required at the discretion of the City Engineer.
(e) All utility lines falling outside the limits of a proposed right-of-way that are intended to be dedicated to the City must be bedded and backfilled according to subsection (a) hereof. These utilities must also be incorporated into a public utility easement, a minimum of twenty (20) feet wide, and dedicated to the City.