Tuesday, March 25, 2025 | View in browser
Project Description
The City is rehabilitating a portion of its public combined sewer lines using the Cured-In-Place Pipe (CIPP) process. Sewer cleaning and televising are scheduled to begin on April 1, weather permitting, with lining work starting in May. All work is expected to be completed by September 30.
During the sewer rehabilitation, a liner will be inserted into the public sewer, temporarily sealing the building sewer service connection and preventing it from flowing into the public sewer. When the contractor is rehabilitating the sewer line in front of your building, please limit water usage by reducing bathroom facility use and refraining from doing laundry or washing dishes. Additionally, any sump pumps connected to the combined sewer system should be disconnected during this period. Once the liner installation is complete, the contractor will reestablish the flow from the building sewer service to the public sewer.
The contractor, Hoerr Construction Inc., will work with area residents and businesses to minimize disruptions and noise. Businesses will receive direct communication before the lining process to coordinate the work. Residents will receive a 10-day notice before the lining begins. Additionally, a notice will be placed on the front doorknob of affected buildings 24 hours in advance, advising occupants of the specific date and time when the sewer lining work will be performed and the sewer service connection will be sealed. This work is expected to take approximately 10 hours at most locations. Some locations may require extended work hours, overnight work, alley closures, and/or revised traffic patterns, which will be detailed in the 10-day notice. "No Parking" signs will be posted in areas where rehabilitation work will restrict parking.
Project Location Map
 Click to enlarge photo.
Information on Styrene
The resins used in the lining process have been used in the fiberglass industry for many years. These resins contain a chemical called styrene, which hardens when heated. Although styrene has an unpleasant odor, it is not harmful at the levels detectable by humans. If you smell styrene while the contractor’s personnel are working in your area, there is no cause for concern.
To help prevent the styrene odor in your building, pour a gallon of water into each drain, especially basement floor drains. This keeps the drain trap full and prevents sewer gases from entering your building. Since water in drain traps evaporates over time, this practice should be done regularly.
City Monitoring
This project will be monitored by the City’s Capital Planning & Engineering Bureau. If you have questions or concerns, contact James Knuth, Civil Engineer II at (847) 448-8280 or jknuth@cityofevanston.org.
View the construction notice.
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