Hayward High School Modernization

The Hayward High School Modernization project consists of 3 phases. Phase 1 was the renovations to the gymnasium. Phase 2 included interim housing, gym bleachers, and seismic strengthening. Phase 3 was the modernization of various buildings on the campus and HVAC upgrades.

Urban Tilth Farm

Urban Tilth is a resident-led organization in Richmond, CA that hires and trains local residents to cultivate agriculture and feed the community. Overaa is partnering with the group to help build the North Richmond Farm, a neighborhood farm and community gathering place. Built in several phases, the project includes ground improvements and utility work, greenhouse, […]

FedEx Distribution Center

FedEx’s new state-of-the-art distribution center is designed to have zero emissions within five years of operation and is considered to be one of the greenest distribution facilities in the western region. Construction included 80 concrete tilt-up panels averaging 42′ tall.  The facility includes 45 dock bays at the rear and front of the building for […]

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 is expanding the existing parking garage. The design build project includes four levels of parking above a basement level containing support spaces and loading dock. The […]

Manteca TCP Mitigation Project

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. Scope included start-up and commissioning of the new systems and associated improvements for five existing wells at four separate sites. Careful coordination of construction near and sometimes adjacent to […]

Marin Academy Aquatic Center

Replacement of an existing 90-year old pool on campus with a new 13-lane competitive swimming pool. Construction included an all-new support building to house locker rooms, shower and bathroom facilities, office space, mechanical equipment, plus delivery/storage areas. The Aquatic Center serves Marin Academy students, faculty, and staff in both athletic and academic endeavors while also […]

CCCSD Filter Plant & Clearwell Improvements

Modifications to a wet weather holding basin plus the construction two 3 million gallon recycled water storage tanks, an electrical substation, and a motor control center to allow a 54 MGD treatment plant to allocate more of its treated water for recycled water uses within the community. Scope also included rehabilitations to pump stations and […]

Contra Costa County Fire Station NO. 86

New 10,856 SF LEED Silver designed fire station station that replaced the existing Fire Protection District Fire Station #86. The new one-story structure includes three apparatus bays, kitchen, dorm rooms, offices, restrooms, training, exercise, storage, day and dining rooms along with all associated HVAC, electrical, civil site work, and landscaping. The new station also includes […]

Brentwood WWTP Expansion Phase II

Expansion of a wastewater treatment plant from 5 MGD to 10 MGD. Scope includes modifying existing wastewater treatment facilities and constructing new wastewater facilities, including process structure and buildings, roads, civil/site work, and landscaping.  

Gilroy Wastewater Treatment Plant Expansion

Expansion of a wastewater treatment plant from 8.5 MGD to 11 MGD. Construction includes a new membrane bioreactor (MBR) complex with new headworks, solids dewatering, and electrical buildings. Scope also covers new structures for oxidation, membrane equipment, blowers, utility/WAS/MLT pump station, chemical facilities and emergency power.