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SECTION 4 – SANITARY <br />53 <br />operations. During snow events and other inclement weather maintenance, extended <br />longitudinal grade transitions shall be provided at Road Ramps to accommodate snow plows. <br />4-3.2 (d) ADVANCE PREPARATION BEFORE CONNECTION TO EXISTING PIPING <br />Once by-pass pumping activities are complete, coordinate with the City Engineer prior to <br />connecting back to the existing system. <br />4-3.3 EXCAVATION <br />4-3.3 (a) GENERAL <br />Excavation shall comply with INDOT Standard Specifications Section 203. <br />4-3.3 (b) REMOVAL OF SURFACE IMPROVEMENTS <br />Removal of surface improvements shall be made with neat saw cut lines. Debris shall be properly <br />disposed. Removal of surface improvements shall comply with INDOT Standard Specifications <br />Section 202. <br />4-3.3 (c) REMOVAL AND ABANDONMENT OF EXISTING CONDUITS AND STRUCTURES <br />Prior to removing or abandoning existing conduits or structures, verify with owner of said utility <br />that they are inactive. Conduits or structures rem oved shall be properly disposed. Salvage any <br />useable components to its proper owner. When existing conduits are removed, the remaining <br />conduit ends shall be cut smooth and plugged water tight. If a conduit or structure is abandoned in <br />place, it shall be filled with non-removable flowable fill. Tops of structures abandoned in place <br />shall be removed below the subgrade elevation. <br />4-3.3 (d) MINIMUM AND MAXIMUM PIPE ZONE TRENCH WIDTH <br />The minimum pipe trench zone shall be as shown in Standard Drawing 4-11. The maximum trench <br />width shall be such that adjacent structures, landscaping, utilities, or workers safety are not <br />compromised. <br />4-3.3 (e) MAXIMUM LENGTH OF OPEN TRENCH <br />The maximum length of open trench while work activities are occurring shall be sixty (60) feet. At <br />the end of each work day or when work activities are not progressing, trench excavation shall be <br />backfilled to the subgrade elevation. The work site shall be contained with orange plastic/vinyl <br />construction fencing. <br />4-3.4 DEWATERING <br />Water shall be kept out of the trench until pipe joining or structure installation is completed. When <br />work is not in progress, open ends, or pipe, fittings, and valves shall be securely closed so that no <br />trench water, earth, or other substance will enter the pipes or fittings.