95.11    BACKFILLING.
      1.   Before any backfill is placed in any excavation made for the purpose of making a connection to a public sewer, the pipe shall be checked with a light and each unit shall show a good light circle throughout its length.
      2.   Backfill shall be washed concrete sand or suitable earth free from boulders and free from roots, sod, and other vegetation.  Backfill shall first be carefully hand-tamped under and around the pipe, up to twelve inches above the top of the pipe, in lifts not to exceed four inches loose thickness.  Care shall be used to place and tamp the bedding course as not to disturb the joints, alignment, or grade of the pipe.
      3.   In areas under or within five feet of an existing or proposed pavement, after completion of the bedding course, the remainder of the trench shall be backfilled with an approved material and tamped in lifts not to exceed six inches loose thickness.  Such tamping shall be done with a mechanical tamper of a type approved by the City Engineer.  The density of the completed backfill shall not be less than ninety-five percent of standard proctor density of the backfill material according to A.A.S.H.O. Test T-99.
      4.   In areas more than five feet from an existing or proposed pavement, after completion of the bedding course, the remainder of the trench shall be backfilled in appropriate lifts with sufficient tamping to achieve final backfill density of not less than ninety percent of standard proctor density according to A.A.S.H.O. Test T-99.
(Ord. 1466 - May. 17 Supp.)