ENGINEERING SERVICES FOR ODOR CONTROL FACILITY
The City of Portland, Bureau of Environmental Services (BES) is seeking proposals from professional engineering firms, teams or consultants, with demonstrated experience in pre-design and design of wastewater-related odor control processes and facilities. This project provides design (pre-design and final design) of odor control facilities that will be installed at the discharge end of the new Portsmouth Force Main where it connects to the existing Portsmouth Tunnel at what is called the "North Shaft" for the Portsmouth Force Main. The Portsmouth Force Main design provides two exhaust ducts (30-inch and 10-inch) from the North Shaft to a foul air vault at grade that is open to the atmosphere. The Portsmouth Force Main Odor Control Facility will provide design of a ventilation and odor control system to treat the foul air from the force main and the tunnel and will connect to the foul air vault.
