Project Details
- Location
- United States Air Force – 60 CES, Travis AFB
- Contract Cost
- $916,786.00
- Date of Commencement
- September 2022
- Date of Completion
- April 2023
- Project Owner
- USAFB-Sewer Repair Project
- Contract Number
- FA4427-13-D-0104
- Type of Contract
- Design Bid Build (DBB)
Project Description
TSI Engineering delivered comprehensive sanitary sewer rehabilitation across multiple project zones at Travis Air Force Base. The scope included system cleaning, structural pipe rehabilitation, manhole restoration, pipeline lining, lift station installation, and associated pavement and site restoration.
All work was performed on an active Air Force installation under strict excavation permitting, environmental compliance, utility coordination, and base security requirements.
Scope Highlights
- Sewer cleaning, root removal, and CCTV inspection (pre- and post-rehab).
- CIPP lining, pipe bursting, and selective pipe replacement.
- Manhole rehabilitation, sealing, and corrosion protection.
- Horizontal directional drilling and underground utility work.
- Lift station and force main installation.
- Pavement removal and full surface restoration (HMA, base, concrete).
Performance
- Mobilized within 10 days of Notice to Proceed.
- Completed within 120-day contract duration.
- Maintained base operations during active sewer tie-ins and bypass work.
- Achieved full compliance with federal construction and environmental requirements.




