Project Background

After reviewing the force main near Covanta Pump Station in Lorton, Virginia, it was determined the existing DIP force main was eroding from the inside out due to the increase in acidity levels from the landfill leachates and increased abrasion from the Covanta Energy/Resource Recovery Facility cooling water towers that were conveyed in the existing force main.

Project Description

The work to be completed for the Covanta Force Main Replacement project consists of replacing approximately 2,600 LF of the existing 8” Ductile Iron Pipe (DIP) force main with 10” HDPE from the Covanta Pump Station valve vault to the Lorton Road’s Right-of-Way (ROW). Then, it will encompass replacing approximately 4,100 LF of 8” DIP with 10” of HDPE from the intersection of Lorton Road to the terminal manhole of the existing force main.

Project Location

Address: 9898 Furnace Rd Lorton, VA 22079 (Covanta Energy Plant)

Blue square is the Covanta Pump Station. Orange Box encompasses Phase One. Green Box encompasses Phase Two. Red broken line in the rectangular boxes is the alignment of the Force Main.

Project Phase

Phase 1 of this project is substantially complete, and Phase 2 will begin construction early October which will complete in April 2026.

Project Benefits

Timeline

What to Expect

Phase 1 of the project has been awarded to William A. Hazel for Linear Construction and has been completed since June 2025.

Phase 2 of the project has been awarded to Flippo Construction Company for Linear Construction. All work will be inspected and supervised by Fairfax County to ensure quality. Every effort will be made to minimize disturbances and impacts to public and private areas. A portion of Lorton Rd. and Silverbrook Rd. will have reduced lanes and construction workers directing traffic. Careful consideration will be given to scheduling construction activities to minimize disruption in the community. There will be no disruption to the existing sanitary sewer service.

Project Cost and Funding Source

The construction cost for Phase 1 of the project is approximately $2.7 million. The cost for construction of Phase 2 of the project is approximately $5 million. Wastewater construction projects are funded through the County’s Capital Improvement Program. 

Contact

For more information, please email Agata Fallon, Project Manager, Fairfax County Wastewater Collection Division at Agata.Fallon@fairfaxcounty.gov.