(a) The backfilling, restoration, resurfacing and repaving of openings, cuts, excavations and tunnelings shall be, both in workmanship and material, in conformity with the current standard specifications of the City, and such work shall at all times, be subject to the inspection and approval of the Director of Public Works or his or her designee. Such restoration shall restore the surface and adjacent area to the same or better condition as existed prior to the opening, cut, excavation or tunneling.
(b) Notice of time of commencement. The Director of Public Works or his or her designee must be notified by the permittee prior to the beginning of backfilling of the date and approximate time at which backfilling will begin.
(c) Excavations shall be restored and resurfaced with comparable design and materials as existed prior to the excavation and shall be backfilled as follows: Sand or fine material shall be mechanically tamped in six-inch layers upon each side and over the top of a substructure to a height of 12 inches. The remainder of the backfill shall be deposited in approximately nine-inch layers and thoroughly compacted by mechanically tamping. In no case shall the number of persons shoveling exceed the number of persons tamping while tamping is in progress. Material for backfilling shall be free from muck, rubbish or other unsuitable material. Material excavated which is not suitable for backfilling shall be removed and suitable material must be provided. Stones exceeding one cubic foot in volume shall not be used in the backfill and individual stones shall be separated from each other by fine material, thus ensuring complete filling of voids. In tunnels, the entire backfill shall be deposited and mechanically tamped in six-inch layers. The removal of sheathing and shoring shall be executed in such a manner as to prevent the sides of the trench from falling in and all voids caused by the removal of timber shall be filled with fine material which shall be thoroughly compacted. Backfill shall be thoroughly flushed with water if ordered by the City Engineer and the use of ten gallons of water per cubic yard of backfill may be required. If the street or highway is unpaved, the backfilling shall not exceed four inches in elevation above the undisturbed grounds at the sides bordering the excavation, and the surface of the street or highway over the excavation shall be maintained by the use of cinder or other approved material whenever settlement takes place.
(d) Excavations shall be repaved as follows: Where excavations are made where sidewalks or roadways are paved, the backfilling shall be completed up to the elevation of the original subgrade under such paving, then the paving shall be removed, down to the subgrade for a distance of one foot beyond the outer limits of the excavation in the roadway and six inches beyond the outer limits of the excavation in the sidewalk, and the pavement shall then be reconstructed in accordance with the correct standard specifications for the construction of new pavements of the type removed. However, where the original pavement of the roadway consists of brick, cobble or stone-block laid without a concrete base, the repaving shall be constructed with (1) a concrete base, six inches thick, composed of one part Portland cement, two parts approved fine aggregate and four parts approved coarse aggregate, each measured separately and accurately by volume and mixed in accordance with the specifications of the City, or (2) Superpave 25.0 mm HMA Base Course at a depth of six inches. Where the width of the excavation exceeds 12 inches, then the concrete base or concrete pavement shall be reinforced with approved steel wire-mesh weighing not less than 65 pounds per 100 square feet and the reinforcing shall extend to within three inches of all edges of the base or pavement and shall be placed two inches below and parallel with the top of the concrete. Where the width of the excavation exceeds 24 inches, the concrete base or concrete pavement shall be reinforced with three-fourths inch reinforcing bars placed six inches center to center with a two-inch clear on each end and a three-inch clear on the bottom.
(e) All repaving of streets and highways shall be extended to the midpoint of the paved cartway ("Curb-to-Midpoint Repaving"") for the length of an excavation on any excavation with a work disturbance area exceeding 50 feet in length. The Director of Public Works reserves the right to waive this requirement for public improvements carried out and/or contracted out by the City and/or carried out or contracted out by a municipal authority or public utility in coordination with a City project involving excavation and/or an excavation project authorized by the City.
(f) Repaving/resurfacing of sidewalks for excavations other than for the inspection, installation, removal, repair or replacement of a curb box only shall require the replacement of the entire length and width of the sidewalk slabs/sections affected. The Director of Public Works reserves the right to waive this requirement for public improvements carried out and/or contracted out by the City and/or carried out or contracted out by a municipal authority or public utility in coordination with a City project involving excavation and/or an excavation project authorized by the City.
(g) The person which received the permit shall be responsible for any failure of replaced pavement surface during a period of three years following completion of permanent restoration work. Any expense incurred by the City in correcting the settlement of the restoration materials or roadway shall be paid by the permittee unless the permittee submits proof satisfactory to the Director of Public Works or his or her designee that the settlement was not due to defective backfilling or other causes controllable by the permittee.
All repaving work shall be done in a skillful and workmanlike manner, under the supervision of a competent superintendent or foreman, experienced in the particular type of construction involved, who shall receive and comply with all orders of the Director of Public Works or his or her designees.
However, upon the request of the person granted the permit, for permission to change the type of repaving surface from that of the original surface, the Director of Public Works or his or her designee may grant such permission if, in his or her opinion, the request is in the best interests of the City. If the Director of Public Works or his or her designee deems it advisable, economical and in the best interests of the City, he or she may, at his or her discretion, order, in writing, the replacement of the original paving surface with a type of paving surface that is more desirable and suitable for the highway.
(h) The person granted the permit shall be responsible for restoration or replacement of property damage occurring on adjacent property as a result of or related to the repaving or restoration. The financial security issued in accordance with Section 1024.01
shall be written to cover damage to adjacent property.
(Ord. 5288. Passed 6-10-20.)