Ratify Contracted Emergency Work - Sewer Repair at Edison Rd. and Edgewater Rd. Collapse – HRP Construction, Inc.

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INTER-OFFICE MEMORANDUM DEPARTMENT OF PUBLIC WORKS DIVISION OF ENVIRONMENTAL SERVICES TO: Members of the Board of Public Works Michael Schmidt, Assistant City Attorney Public Works Theresa Heffner, Clerk FROM: Jacob M. Klosinski, P.E., Assistant City Engineer SUBJECT: Emergency Repair – Edison Road and Edgewater Sanitary Sewer Repair (PR-0020709) Agenda Request – Ratify Emergency Repair Contract DATE: December 2, 2022 The Department of Public Works Division of Engineering, Utilities, and Street/Sewer teams contacted HRP Construction to assist with emergency repairs following a sanitary gravity sewer main collapse west of the intersection of Edison Road and Edgewater Drive. This is a critical regional sanitary sewer main that is part of the I/N Tek Sanitary Trunk Sewer in St. Joseph County. Assessment The root cause of the sanitary sewer collapse appeared to be a combination of aging, deteriorated pipe and activities by Milestone Contractors. The Milestone Contractors vehicle’s tire sank into the ground at the intersection where the collapse occurred and had to be removed by a wrecker / tow truck prior to assessing the damage to the sewer. Emergency Repair Work City crews and HRP Construction assessed the situation and consulted about the repair work on- site. Crews were mobilized the following morning to remove the collapse section of pipe and couple a new section of pipe to restore flow to the sanitary sewer. This section of sanitary sewer should be considered for replacement in the future. The existing pipe is deteriorating to the point that the ductile iron pipe will not be a good substrate for a lining project. Full replacement of sections of gravity sewer along the I/N Tek Sanitary Trunk Sewer should be considered and budgeted to remedy the failing pipe section and continued problems along this trunk sewer. For questions regarding the subject agenda request and emergency repair, contact Jacob M. Klosinski (Ext. 9496) at the Division of Engineering. December 13, 2022