The United States Section of the International Boundary and Water Commission (USIBWC), has a requirement for contract for the operation and maintenance (O&M) of the South Bay International Wastewater Treatment Plant (SBIWTP) and facilities located in San Diego County, California.

The SBIWTP is a twenty-five (25) million gallon per day (MGD) wastewater treatment plant located at 2995 Clearwater Way, in San Diego, San Diego County, California, , north of the International Boundary, and near the intersections of Monument and Dairy Mart Roads. Construction of the plant’s advanced primary treatment phase was completed in September 1997, and construction of the secondary treatment phase was completed in January 2011. The plant is treating wastewater originating in Tijuana, Baja California, Mexico and the SBIWTP is operated under the authority of the United States Section, International Boundary and Water Commission (USIBWC). An average of twenty five million gallons per day (25 MGD) of effluent is being discharged through the South Bay Ocean Outfall (SBOO), and is subject to the requirements of the National Pollutant Discharge Elimination System (NPDES) Permit, Permit Number CA0108928, Order Number R9-2023-0009; the California Regional Water Quality Control Board (CRWQCB) Monitoring and Reporting Program, Number: R9-2023-0009; and the California Ocean Plan.

In 2024, USIBWC awarded a $600M contract for the design and construction of the rehabilitation and expansion of the SBIWTP. USIBWC awarded the contract to PCL Construction (PCL) of Long Beach, California. In turn, PCL selected Stantec Consulting Services, Inc. (Stantec), of San Diego, as the design firm. The project was awarded using the Progressive Design-Build (PDB) contract delivery method consistent with Government contracting practices and regulations.

The Contractor shall provide, all labor, material, management (including bi-national participation with Mexico), and other resources required to perform full-service O&M of the SBIWTP and its conveyance system, plus Canyon Collectors, Pump Stations, and South Bay Land Outfall (SBLO). Full service operation and maintenance is defined as complete facility operation and maintenance, including but not limited to providing day-to-day contract management, planning, supervision, administration, personnel; plant influent and effluent sampling and laboratory testing; equipment operation, maintenance, servicing, repair and replacement; system monitoring and operation; data recording, markups of plant as built, management and reporting; quality control; capital improvements; vehicles and vehicle fleet management, operation, maintenance and repair; housekeeping; grounds maintenance; consumable supplies including chemicals, and other services related to the operation and maintenance of the SBIWTP.