This comprehensive wastewater expansion project includes an environmental enhancement facility, sewer rehabilitation in several areas, and inflow/infiltration (I&I) repair of various sewer mains ranging from 8 inches to 12 inches in diameter. The project also included two large regional sewer lift stations (Edenborne Regional Lift Station, M.P. Evans Regional Lift Station), an influent force main for new developments, and a treatment plant expansion to bring total flow to 3.5 mgd to accommodate both current and future growth.
Engineers were responsible for all program management (phases I and II), including with wastewater system facilities plan, environmental information document, SRF loan application and financial application, procurement of SRF funding, cost estimates, preliminary and final design, permitting, construction engineering and inspection.
The expansion accommodates the city’s growth for the foreseeable future. In addition, pump and motor starts were minimized by controlling the effluent pumps with VFDs. This allows one pump to operate continually and another to ramp up and down as required to keep up with flow adjustments from an automatic weir gate. After 24 hours, the lead pump switches to ensure even pump run time.
Phase 1 of this project, the Environmental Enhancement Facility, was completed by GSA Consulting Engineers prior to joining McKim & Creed in July 2021 and won an award from the Louisiana Municipal Association.