Through televised inspections of storm sewers, the Public Works Department is able to identify defects within the sewer. By analyzing the defects, the proper course of action is determined to address the identified defects. The appropriate course of action is generally limited to either lining the pipe segment or replacing the defective section of pipe with a new section of pipe.
Storm Sewer Lining Program (Cured in Place Pipe, CIPP)
Storm sewer lining is a trenchless technology whereby a "sock" that contains different resins is pulled through the defective pipe. The next step involves passing hot water or steam through the pipe, which reacts with the resins causing the "sock" to cure and hardened in the shape the defective pipe. The result of this process is a seamless, joint free "pipe within a pipe." The new pipe creates a smooth, continuous inner surface that usually increases flow capacity and eliminates any defects that were previously present. The final step of the process is reestablishing the house connections to the main. When the "sock" is pulled through the pipe and hardens, the house connections to the main are blocked and must be reestablished to allow for grey water to flow from the home to the main. Once the new pipe has cured (typically 8 - 18 hours depending on the size of pipe), a device is placed in the sewer and travels down the main cutting out the existing connections. This quick and non-disruptive process typically allows for the complete installation of pipe and the connections to be reestablished in the same day.
Please contact the Public Works Department at 847-870-5640 or email Public Works with any questions concerning the storm sewer lining program.
