The South Bay Ocean Outfall project was initiated to prevent serious environmental problems from wastewater throughout the waters of San Diego and Tijuana. It was designed and constructed to convey wastewater from the International wastewater treatment plant and City of San Diego wastewater treatment to a diffuser system approximately 4 miles offshore.

Utilizing surface air and a surface supplied mixed gas diving system, AUS divers performed the riser installation and partial pipeline. Tasks included: Installation and removal of the platform; Installation and removal of sheet pile for the glory hole; Positioning of casings and riser; Installation and removal of the mandrel; Installation of grouting lines; Installation of the tie-in to the seabed pipeline; Positioning ballast stone around riser and pipeline.