Chelsea Park Sewer Rehabilitation Project
Roth Hill developed a rehabilitation strategy using a combination of open trench spot repairs and Cured-in-Place-Pipe (CIPP), allowing Southwest Suburban Sewer District to rehabilitate 32,000 feet of existing sewer in Chelsea Park for approximately half of the $4.6 million obtained from the PWTF Board.
Phase I of the project consisted of repairing sections of lines that could not be lined using the CIPP process. Phase II consisted of relining the majority of the existing sewers using CIPP technology. Phase III consisted of repairing additional locations identified during Phase II of the project that could not be lined. Once repaired, the locations in Phase III were also rehabilitated using CIPP technology. The total project cost for all three phases of the Chelsea Park project including engineering was $2,067,036 and accounted for the rehabilitation of approximately 33,547 feet of existing sewer. The District realized a cost savings of over $2.5 million by using the rehabilitation strategy developed by Roth Hill.
Because of the significant cost savings realized by the District on the first three phases of the Chelsea Park project, the District has chosen to add two additional phases to the project. Similar to the first rehabilitation project, Phase IV will repair existing sewers that cannot be lined using the CIPP process. Phase V of the project will rehabilitate the existing sewers using CIPP technology. The final two phases of the Chelsea Park project are ongoing and the District hopes to rehabilitate an additional 25,000 feet of existing sewers. In addition, the District is also rehabilitating existing side sewers with the Phase IV project. When completed, the District expects to have rehabilitated approximately 60,000 feet of existing sewers within the Chelsea Park neighborhood.