10.26.2021-SBN-Standards-Manufacturer-Additions-Minor-Revisions-final

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SECTION 3 – STORMWATER 33 3-3.3 (c) (ii) REMOVAL OF SURFACE IMPROVEMENTS: Removal of surface improvements shall be made with neat saw cut lines. Debris shall be properly disposed of by the Contractor. Removal of surface improvements shall comply with INDOT Standard Specifications Section 202. 3-3.3 (c) (iii) REMOVAL AND ABANDONMENT OF EXISTING CONDUITS AND STRUCTURES: Prior to removing or abandoning existing conduits or structures, verify with the utility that they are inactive. Conduits or structures removed shall be properly disposed of by the Contractor. Salvage any useable components to its proper owner. When existing conduits are removed the remaining conduit ends shall be cut smooth and plugged water tight. If a conduit or structure is abandoned in place, it shall be filled with non-removable flowable fill. Tops of structures abandoned in place shall be removed below the subgrade elevation. 3-3.3 (c) (iv) MINIMUM AND MAXIMUM PIPE ZONE TRENCH WIDTH The minimum pipe trench zone shall be as shown in Standard Drawing 3-10. The maximum trench width shall be such that adjacent structures, landscaping, utilities, or workers safety are not compromised. 3-3.3 (c) (v) MAXIMUM LENGTH OF OPEN TRENCH The maximum length of open trench while work activities are occurring shall be sixty (60) feet. At the end of each work day or when work activities are not progressing, trench excavation shall be backfilled to the subgrade elevation. The work site shall be protected with orange plastic/vinyl construction fencing, barricades, or temporary fencing. 3-3.3 (d) DEWATERING Water shall not be discharged into the City’s sewer system without an approved discharge permit, in adherence to the City’s Stormwater Ordinance. Water shall be kept out of the trench until pipe joining or structure installation is completed. When work is not in progress, open pipe ends, fittings, and valves shall be securely closed so that no trench water, earth, or other substance will enter the pipes or fittings. Dewatering shall be performed such that dry working conditions are maintained for all the excavated trenches and excavations for structures. The Dewatering System shall be installed in a manner so it does not interfere with traffic maintenance. Diesel dewatering equipment, including generators, may be used. Any diesel equipment utilized must be sound attenuated. The equipment noise level shall comply with Article 7 – Noise Control, of the City of South Bend Code of Ordinances. A spill containment system (minimum size equal to the fuel tank volume) shall be provided and placed.