Project Details
- Location
- San Luis Obispo County, CA
- Contract Cost
- $1,239,367.23
- Date of Commencement
- September 2021
- Date of Completion
- November 2022
- Project Owner
- Department of Transportation (DOT) - Caltrans
- Contract Number
- 05-1G3704
- Type of Contract:
- Design Bid Build (DBB)
Project Description
TSI Engineering Inc. executed a critical infrastructure modernization project at the Shandon Safety Roadside Rest Area (SRRA) in San Luis Obispo County. The project primary focused on upgrading the facility’s wastewater treatment and water distribution systems to meet modern environmental standards and ensure operational efficiency.
Scope Highlights
- Increased wastewater capacity through septic modification and leach field expansion.
- Rehabilitated subsurface wetlands and recirculation systems, including HDPE liner upgrades.
- Modernized water distribution, metering, and service panels.
- Installed advanced pump controls and real-time equalization tank monitoring.
- Constructed HSS steel picnic shelters and concrete sidewalk improvements.
- Performed site clearing, grading, foundation prep, and utility relocation.
- Installed underground utilities with required code-compliant separations.
Performance
- Delivered complex system upgrades within the contract duration.
- Maintained continuous operations during active utility cutovers.
- Achieved full compliance with 2018 Caltrans Specifications and State Fire Marshal standards.
- Provided durable, regulation-compliant wastewater infrastructure serving long-term facility needs.



