Project Name: East Area Water Quality Control Facility Improvements

Combined sewer flow from the Custer Avenue Combined Sewer Control Facility (CSCF) is transported through the East Area Tunnel, formerly known as the Intrenchment Creek Storage Tunnel, for treatment at East Area Water Quality Control Facility (WQCF). The capacity of the East Area WQCF is 20 MGD but can treat flows up to 34 MGD. The East Area WQCF needs upgrades and repairs to restore efficiency and reliability. The solid thickening and dewatering and vortex grit removal units require rehabilitation. In addition, the facility has significant corrosion and the filter building and residual handing units need replacement.

The scope of this project includes:

• Rehabilitating the sludge thickening and dewatering facilities
• Repairing the tunnel pump station outfall
• Repairing the East Area WQCF sedimentation basin
• Providing electrical improvements
• Replacing six sedimentation basin submersible sludge pumps
• Upgrading chemical system equipment
• Rehabilitating the East Area WQCF solids processing pump station
• Providing an update to the Foxboro control system software

Justification:

• Improves system reliability helps the City meet new permit requirements
• Provides safer working conditions for operating personnel
• Reduces imminent, short term, and long-term compliance risks

Project Type: CSO Facilities
Project Start: 02/28/2013
Proposed Construction Start: 04/2022
Scheduled Completion: 1/28/2024
Project Budget: $9,219,000
Council District(s): 1, 12
NPU(s): Y, Z
Project Status / Phase: Active / Construction