Orion/TC Joint Venture has been awarded the Progressive Design-Build contract for the Oceanside Mesa garrison (OMG) Force Main, OMG Lift Station (OMG LS), Mission Avenue Lift Station (MALS) Force Main Replacement, and Land Outfall Replacement, with GHD serving as the design engineer. The Project includes installation of multiple parallel HDPE force mains ranging from 24-inch to 42-inch diameters, constructed primarily via open-cut methods with targeted trenchless segments to reduce environmental and community impacts. Upon completion, flows from the new OMGLS, Buccaneer Lift Station, and Buena Vista Lift Station will converge into the OMG Force Main and be conveyed to the San Luis Rey Water Reclamation Facility.

A sudden pipe collapse during record rainfall created a sinkhole in the middle of Villa Jolla Drive threatening buildings, critical public infrastructure, and public safety. Orion mobilized immediately with the City of San Diego to implement emergency stabilization, shoring, and permanent storm drain replacement.

This project is package 4 of the East County Advanced Water Purification Project and delivers the brine-conveying and solids-dewatering liquid waste stream to the Point Loma Wastewater Treatment Plant. This integrates the regional solution to the management of brine and solids dewatering liquid-waste stream, increasing regulatory certainty and minimizing disruption to future East County AWP operations.

Orion and Harris & Associates partnered on an $18,525,277 design-build scope to remove and replace sewer and water mains and support fiber optic installation.

Integrating modern valves, appurtenances, and operational tie-ins, this project helped ensure resilience, efficiency, and adaptability for current and future mission demands. This project not only improves water delivery and storage source water but also enhances the overall operational readiness and sustainability of Camp Pendleton’s critical water infrastructure.

A sudden pipe collapse during record rainfall created a sinkhole threatening homes and critical public infrastructure. Orion mobilized immediately with the City of San Diego to implement emergency stabilization, shoring, and permanent storm drain replacement.

The project provides a local, sustainable water supply for up to 30% of the county’s population by recycling and purifying wastewater for surface water augmentation at Lake Jennings.

The project introduced high-capacity reclaimed water pipelines, wells, and reservoirs serving both the northern and southern portions of the base. Early design coordination with federal and environmental agencies ensured long-term sustainability and regulatory compliance.

Orion served as prime contractor on a $6,491,625 city project to upgrade the existing sewer system capacity via trunk main replacement.

Orion and Harris & Associates partnered on an $18,525,277 design-build scope to remove and replace sewer and water mains and support fiber optic installation.

Orion delivered a design-bid-build solution with 7,000 LF of storm drain piping and a dedicated pump station to mitigate airport stormwater issues.