The Disinfection Improvements Project at the Noman M. Cole, Jr. Pollution Control Plant (NMCPCP) owned and operated by Fairfax County’s Department of Public Works and Environmental Services (DPWES) has earned an Envision Gold award for sustainability.
The NMCPCP is a 67 million gallon per day (mgd) wastewater treatment plant in Fairfax County, Virginia. The Plant had an aging sodium hypochlorite disinfection system that was in need of rehabilitation or replacement. Through a detailed evaluation of alternatives, ultraviolet (UV) disinfection was selected as the chosen solution.
The project includes a UV facility, an auxiliary chemical storage and feed facility, separate disinfection for water reuse/plant water purposes, reuse water pump station, plant water pump station, filter backwash storage and pumping, a new outfall pipe and associated electrical improvements. Under the innovative leadership of Fairfax County’s DPWES, the Disinfection Improvements Project is the first public works project in the county to use virtual reality to enhance design and construction processes. It is also the first in the county to use the Construction-Management-At-Risk (CMAR) alternative project delivery method; a method in which a commitment is made by the Construction Manager to deliver a project within a Guaranteed Maximum Price, allows for a more qualification-based approach for selecting contractors and equipment manufacturers and helps streamline the construction process. The collaborative approach to project delivery has enabled the project team to be proactive in finding innovative solutions to the various project issues and concerns as they have emerged.
Fairfax County DPWES continues to work in close collaboration with their design engineer, Hazen and Sawyer, and their CMAR, Ulliman Schutte Construction, for the delivery of this award-winning sustainable project which is currently 49% complete.