Backfill shall be in accordance with Regulations for Street and Highway Excavation, Public Works Department, Hamden, latest edition, and as supplemented hereto.
(A) Under no circumstances shall backfill be permitted around and over the pipe until the pipe, joints, lines, elevations, and workmanship has been inspected and approved by the Engineer.
(B) Wherein under § 51.18(E) the excavated material is deemed not suitable for backfill, such material shall be replaced by sand or gravel, not containing pieces larger than three inches in diameter. The furnishing and placing of satisfactory material shall be at the contractor's expense.
(C) Backfilling of trenches on private property shall proceed in the following manner: The installed pipe or structure shall be covered with approved fine material to a depth of at least one foot compacted. Compaction shall be by means of at least a 10-pound hand tamper or an approved hand mechanical tamper. Succeeding layers shall not be more than two feet in depth with each layer thoroughly compacted to the satisfaction of the Engineer before placing the next layer.
(D) Backfilling of trenches within the street area from the back of the area reserved for sidewalks to the trunk line of the sewer shall proceed in the following manner: The installed pipe or structure shall be covered with approved fine material to a depth of at least one foot compacted. Compaction shall be by means of at least a 10-pound hand tamper or an approved hand mechanical tamper. Succeeding layers of approved backfill material shall not be more than six inches in depth after compaction, with each layer thoroughly compacted to the satisfaction of the Engineer before placing the next layer. Material taken from the trench excavation shall not be used to backfill this portion of the sanitary lateral without first receiving permission from the Engineer. This permission will only be granted in the case of suitable gravel or sand. Barring receipt of this permission, the contractor must at his own expense furnish suitable gravel and place each as previously prescribed.
(Ord. 235, adopted 9-4-84) Penalty, see § 51.99