Challenge
The City of Euclid was required per consent decree from EPA to minimize the number, duration, and volume of wet weather CSO discharges. The City was also to ensure that wet weather CSO discharges that do occur comply with technology and water quality requirements of the Clean Water Act, state laws, and regulations of the current NPDES Permit.
Approach
A CMAR approach was selected as the delivery method for this project to supplement the City of Euclid’s personnel with the addition of specialized/qualified individuals to assist and guide the City throughout the many phases of preconstruction and construction of the project. Kokosing Industrial was awarded the CMAR contract and managed the project for the duration of all fourconstruction phases.
- Phase 1: Edgecliff Relief Sewer. CMAR oversight of construction of the new Edgecliff Relief Sewer which provides an emergency bypass for peak flows beyond a one-year storm event of 213 mgd.
- Phase 2: Headworks Site Preparation. CMAR and GC services to perform mass excavation of dirt and shale, installation of H-pile and lagging wall, 96-inch RCP storm sewer relocation, and construction of a new cast-in-place concrete influent chamber.
- Phase 3: Headworks Facility & Wet Weather Equalization Basin. CMAR and GC services to perform construction of the new headworks complex providing coarse screening for flows up to 213 mgd, fine screening, grit and grease removal, and flow metering for flows up to 66 mgd discharging to future MBR WWTP. Construction also consisted of a new equalization basin, associated piping, pumping, electrical, and other sitework.
- Phase 4: A&B MBR. Phase included procurement of large MBR equipment package, performing CMAR/GC services for installation of new MBR process within existing facility tankage to treat peak flows up to 66 mgd. This plant was the largest MBR system of its kind when contracted.
Results
Upon construction completion, every square inch of the facility had been touched and modified to produce a high-functioning facility that met the needs and requirements as outlined by the EPA. The wastewater effluent produced is now cleaner than the water in Lake Erie.
While building the largest construction project the City of Euclid had ever undertaken, the teamwork afforded by using the CMAR delivery method ensured that the team was able to navigate the entire process of finishing the design, constructing the new process, keeping the existing treatment plant functioning, and seamlessly swapping over to the new treatment train. This collaborative delivery method also allowed for constant feedback to the City on the important parameters of budgeting, scheduling, and constructability which allowed it to make crucial decisions on how to proceed.
The project closed out by burying the largest addition—a 15-million-gallon EQ basin—and restoring some prior green space for the community to keep the downtown area looking great and unimpeded by views of a wastewater plant.
Other WCDA members involved: Veolia Water Technologies & Solutions (supplier of MBR system) and Ferguson Waterworks (supplier of plastic yard piping and miscellaneous piping accessories)
“This project was made possible by the support of the Euclid City Council and the hard work of a great team. The carefully selected members of he team believe in doing the right thing to protect our lake. The plant is a model for municipalities worldwide and others are following Euclid’s lead y selecting MBR processes. The lake and lakefront are a unique asset to the city and the wastewater treatment plant we built will protect those precious resources for many years to come. Euclid is steadfastly committed to protecting the environment and taking measures toward a greener city and a cleaner lake.”
—Dan Knecht, Service Director, City of Euclid
