Project No. 27503

Project Start Date: Fall 2026     

Estimated Completion Date: Fall 2034

Project Manager: Brian Bailey 703-737-7092

Project Description: The Town's discharge permit for the WPCF includes both concentration and waste load allocation limits for nitrogen. When the average flow to the WPCF exceeds 5 million gallons per day, the waste load allocation limit will govern the permit requirements related to nitrogen. To meet the waste load allocation requirements in the discharge permit, the WPCF will need to modify the existing facilities and (likely) construct new facilities. The required work at the WPCF will be included in a preliminary engineering report, which will be completed in CY 2024. The following projects are going to be consolidated into this larger phased project: Water Pollution Control Facility Aeration Improvements (29503); Water Pollution Control Facility Backup Generator (24501); and Water Pollution Control Facility Chemical Building Addition (24502).

Project Updates: The final PER was received in February 2025. Based on recommended improvements, additional engineering work has begun focusing on enhancement of the secondary solid waste stream concentrations. Upon completion of engineering design, permitting will be required for construction targeted for 2026 - 2027.