Wastewater infrastructure assistance is being pursued under the Section 219 Environmental Infrastructure Assistance Program under the Madison and St. Clair Counties, Illinois Authority to support a potential construction project in Cahokia Heights. The Infrastructure Investment and Jobs Act provided $25,000 in Federal funding to scope and document a wastewater infrastructure assistance project in a Letter Report. The Letter Report defines the scope of Federal construction assistance, describes the environmental compliance requirements for the proposed work, serves as the basis for allowing USACE to enter into a Project Partnership Agreement with the city, and establishes the implementation responsibilities between USACE and the city.
In this Letter Report and Agreement, USACE proposes to provide Federal construction assistance to the City of Cahokia Heights for the rehabilitation of a section of sanitary trunk sewer, including cleaning, camera inspection, and installation of cast-in-place pipe, (aka “slip lining”) of the largest, deepest, and most downstream sections of the main sanitary sewer trunkline.
The purpose of the project is to assist this economically disadvantaged community with much needed wastewater infrastructure improvements. Cracks, settling and other disturbances that develop over time deteriorate sanitary sewer pipelines and other conveyance structures that comprise wastewater collection systems.
These deteriorating conditions increase the amount of inflow and infiltration entering the system, especially during periods of wet weather. Increased I/I levels create an additional hydraulic load on the system and thereby decrease its overall capacity, resulting in backups into homes and overflows into receiving waters. This bypass of untreated wastewater, known as a Sanitary Sewer Overflow, adversely affect human health as well as impair the usage and degrade the water quality in receiving waters, which is the case for the City and is subject to an USEPA Region 5 Administrative Order on Consent dated August 21, 2021.
The Project is a critical part of the sanitary sewer infrastructure. This trunkline has experienced failures over recent years and conventional open excavation repairs to these failures are very problematic in that they require large amounts of care of flow (i.e. bypass pumping), dewatering of groundwaters, and present potential safety issues within close proximity to major highways and streets as mentioned above. Therefore, the requested assistance would involve a trenchless sewer rehabilitation involving cured-In-Place Pipe lining that corrects pipe deficiencies (cracks and breaks), restores structural stability, and ensures long-term reliability of this main conduit for wastewater transport.
The Sanitary Sewer Trunkline Project would initiate near the intersection of Jerome Lane and Mousette Lane and continue in a southwesterly direction towards the Levin Drive Sanitary Pump Station. The project is generally located within major city collector streets, including Jerome Lane, Range Lane, East 5th Street, Water Street, and Levin Drive. This portion of the trunkline also intersects and crosses under major transportation features, including state highways (IL Rt. 157 and IL Rt. 3) and a major regional railroad (Union Pacific Rail Road). Repairs of sewer failures on the trunkline in these areas are extremely expensive and problematic for local and regional logistics systems.
USACE submitted a budget package to request Fiscal Year 2023 Federal funding for implementation of the proposed project. Senator Durbin is supporting this $3.5M dollar Federal request through the Community Directed Funding process for FY23 Appropriation.
- March 2022: Submit FY23 Work Plan package for project construction
- June – November 2022: Document proposed project within Letter Report; Obtain higher Major Subordinate Command Approval
- March 2023: Anticipated Receipt of FY23 funding for project construction
- July 2023: Execute Cost Share Agreement with city
- November 2023: Contract Award
- December 2023: Construction Start
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