While performing maintenance at the Wellington II Pump Station, a problem was discovered with the existing 4-inch force main that was causing issues with proper flow. An emergency project was initiated to identify and repair the issue. This included installing a temporary bypass pumping system, relocating a gas line, and installing two new 2-inch parallel force mains to replace the existing line. The emergency project was substantially completed in November 2020.

1. A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
Project No. WW-000008-014
Mount Vernon District
January 8, 2021
Wellington II Force Main Emergency

2. Project Details
Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Description:
While the Wastewater Collection Division (WCD) was performing maintenance activities at the Wellington II Pump
Station in late June 2020, a problem arose with the maintenance of proper flow through the existing 4-inch diameter
force main. WCD requested assistance from the Wastewater Design and Construction Division (WDCD). Flippo
Construction was utilized to assist WDCD with identifying and repairing the cause of the issue. Repair included
installation of two 2-inch parallel force mains. This emergency project was substantially complete on November 3,
2020.
Project Overview:
• CCTV inspection of existing 4-inch diameter force main to locate and identify cause of flow issue.
• Installation of temporary bypass pumping system that was originally proposed with Wellington II Pump Station
Rehabilitation Project.
• Burial of temporary bypass pumping system since it will remain in operation until substantial completion of
Wellington II Pump Station Project in mid-2021.
• Relocation of Washington Gas Line.
• Installation of two 2-inch parallel force mains that were originally proposed with Wellington II Pump Station
Rehabilitation Project.
Project Team:
• Colleen Block, P.E., Wastewater Design and Construction Division
• Natasha H. Schmidt, P.E., Wastewater Design and Construction Division
• Sara Ferrance, Wastewater Collection Division
• Joy Khoshe-Saleem, Wastewater Collection Division
• Contractor: Flippo Construction Company, Inc

3. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Mount Vernon District, Tax Map No. 102-2

4. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Identification of Force Main Issue
HOLE
DISCOVERED IN
FORCE MAIN

5. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Temporary Bypass Pumping System Installed
Temporary
Bypass Pumping
System Force
Main

6. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Burial of Temporary Bypass Pumping System Piping
Buried Temporary
Bypass Pumping
System Force Main
Location

7. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Washington Gas – Gas Line Relocation

8. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Installation of New 2-inch Parallel Force Mains

9. Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Backfill and Hot Mix Asphalt Patch

10. Before After
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Wellington II Force Main Emergency
Completed Work

11. Additional Information
For additional Information, please call
www.fairfaxcounty.gov/publicworks
Wellington II Force Main Emergency
Capital Facilities/Wastewater Design and Construction Division/Collections Branch
Irene Haske, Communications Specialist
703-324-5821, TTY 711
Irene.Haske@fairfaxcounty.gov