Sanitary Sewer Force Main Project

San Rafael, California

Installed 60-inch diameter manhole access structures on an active sanitary sewer force main utilizing hot taps and bypass systems. 

This approach ensured uninterrupted operation of the pumping plant while maintaining a safe working environment for all personnel throughout the installation process.

New Steel Water Line Installation Project

Tiburon, California

Installed over 3,000 linear feet of new welded steel water main through the residential streets of Tiburon. 

This complex project required precise coordination with local residents and concurrent infrastructure work, all within the constraints of narrow and heavily trafficked roadways.

Sanitary Sewer Spot Repairs

Emeryville, California

Corcus Construction supported the City of Emeryville’s sewer rehabilitation program by performing critical spot repairs on aging sewer infrastructure. 

The work included repairs at depths of up to 20 feet, often executed in high-traffic urban areas to minimize disruption and ensure public safety.

Water Main Rehabilitation Project

Napa, California

This was a project completed in partnership with Insituform Technologies and involved the rehabilitation of an existing 12-inch cast iron water main. Major scope elements included night work at a busy intersection, excavation and shoring, removal of isolated pipe sections, installation of new closure pieces following CIPP lining, and final pressure testing and chlorination to ensure system integrity.

Embankment Restoration along F1 

Newark, California

This project encompassed the development and execution of a comprehensive Water Pollution Control Plan, along with overall site management. Scope of work included the design and installation of a dewatering system and temporary channel bypass, construction of a temporary access entrance, and extensive earthwork involving excavation.

Palo Alto Horizontal Levee Project (PAHLP)

Palo Alto, CA

This project involved coordination with multiple agencies, including ABAG, the City of Palo Alto, FAA, NMFS, the SF Bay Regional Water Board, and the U.S. Army Corps of Engineers. Work included building a levee berm, installing a new pump at the RWQCP, placing a buried effluent pipeline along Harbor and Embarcadero Roads, and routing treated effluent to a new horizontal levee near Harbor Marsh.

Low Impact Development at Municipal Services Center North

Santa Rosa, CA

The project involved building a bio-retention facility in the corporation yard to treat and retain stormwater from the parking lot, storage yard, and nearby buildings. Key work included a perimeter retaining wall with curb and gutter, new irrigation, bio-retention soil backfill, and finish paving.

Water Treatment Plant Miscellaneous Mechanical Improvements

Benicia, CA

The project involved replacing failed piping under the operations building, installing a backwash valve and flow meter, isolating the sedimentation basin, and repairing or replacing slide gates. It also included minor structural repairs and slide gate upgrades at the Raw Water Diversion Structure.

Webster Drive Hydropneumatic Tank Replacement

Martinez, CA

The project involved removing the existing hydropneumatic tank, support systems, and air compressor, and installing a new tank and air compressor with foundations, anchorage, and related mechanical, electrical, and instrumentation upgrades. A temporary pressure control system was also installed to maintain operations during construction.