Portside Commerce Center Terminal 3 Industrial Building
The 202,371 SF manufacturing warehouse includes multi-level office spaces and mezzanine. The 691,000 SF project site area required ground improvement, new site improvement and underground utilities. The building is constructed with concrete tilt-up wall panels.
Orinda Intermediate School Student Services Building
Preconstruction and construction services for the new Student Services Building which houses the administration, counselors, and a wellness center. Scope also included the construction of four pre-checked covered walkways and sitework improvements.
Isaac R. Montañez Elementary School & Middle School Addition
Design and construction of the phased project. Phase 1 included the 66,000 SF new elementary school campus with classrooms, admin offices, a kitchen, a multipurpose room, a library, and extensive sitework. Sitework consisted of vehicle parking, student and bus drop-offs, play fields, playground area, a running track, and street improvements. Phase 2 was the middle […]
San Leandro High School New Gymnasium
Preconstruction and construction services for the new state-of-the art gymnasium for San Leandro Unified School District. The 55,000 square foot facility features three courts and approximately 3,000 seats as well as academic and athletic support spaces. Scope included site improvements and demolition of an existing gymnasium on campus.
CCCSD Pump Station Phase 2A
For our long time client, Central Contra Costa Sanitary District, we are installing two new 12.4 MGD sewage pumping stations and the associated equipment in Martinez, CA. The work includes heavy civil, mechanical, electrical, instrumentation, and controls, and the installation of new PG&E services, demolition and decommissioning of the existing pump stations.
Gilroy WWTP Plant Expansion
South County Regional Wastewater Authority (SCRWA) manages the treatment of wastewater and also operates a recycled water facility to irrigate local parks, golf courses, landscape medians, agriculture and industrial uses. The expansion project expands the WWTP using membrane bioreactor (MBR) technology to increase the current capacity of 8.5 MGD to 11 MGD to accommodate planned […]
Salinas Valley Health Parking Structure
Salinas Valley Health has roots running back to 1953 when its hospital was first founded to service the Monterey County community. To provide more parking at the campus, Overaa expanded the existing parking garage. The design build project includes four levels of parking above a basement level containing support spaces and loading dock. The cast-in-place […]
CCCSD Mechanical & Concrete Renovations
Construction of a temporary bypass pump station plus renovations and replacement of failing mechanical equipment. This included renovations of sluice gates and primary sedimentation guide rails, and the repair of Fiberglass Reinforced Plastic (FRP) odor control equipment, crack repair, concrete coating and permeation grouting. The final design included 11 diesel driven pumps that required full […]
Columbine Station Improvements
San Jose Water Company’s existing Columbine Station reservoir, constructed in 1963, needed to be upgraded to enable the storage of potable water. Overaa demolished the existing basin and all its appurtenances and provided two pre-stressed concrete tanks to provide a storage capacity of 5.5 million gallons each.
Manteca TCP Mitigation Project
This ENR award-winning project in the Water/Environment Category included design and construction of the installation of Granular Activated Carbon (GAC) treatment systems to treat and remove 1,2,3 -Trichloropropane (TCP) from City of Manteca, CA, groundwater and associated improvements for five existing wells at four separate sites. Careful coordination of construction near and sometimes adjacent to […]
