Facing aging infrastructure and tightening regulatory requirements, the cities of Spanish Fork and Mapleton set out to modernize their wastewater system by constructing a new water reclamation facility (WRF). Identified during a facility planning study, a greenfield site would allow for phased replacement approach. This enabled the City of Spanish Fork to maintain operations at the existing WRF while transitioning to a new, long-term solution.
We supported this effort by designing interim upgrades to the existing facility while working alongside J-U-B Engineers for the design of the new WRF. The first phase centers on a biological nutrient removal membrane bioreactor (BNR/MBR) process. This will improve treatment performance and meet future effluent limits, while residuals treatment remains at the existing facility until a planned second phase.
The new facility will treat projected 2040 flows of 6.6 million gallons per day, or MGD (25 megalitres per day, or MLD), with capacity expandable to 10.7 MGD (40.5 MLD). The treatment process includes new headworks, screening, grit removal, pumping, MBR treatment, UV disinfection, and effluent re-aeration.
Delivered using a construction manager/general contractor (CM/GC) model, the project leverages a global design team, of which we’re responsible for 50 percent of the design. Our team provided mechanical process design of the BNR/MBR process, electrical and instrumentation and controls design of the entire facility, and procurement and construction-phase support.
To accelerate delivery and meet the state-mandated 2025 deadline, the team advanced six major equipment packages to 90 percent design during early phases, enabling pre-procurement and early fabrication. This approach streamlined construction and positions the new facility for timely commissioning while supporting long-term system resilience.
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