Special District

San Francisco-Oakland Bay Bridge Toll Plaza Improvements

This project is an element of the overall enhancement of the eastern span reconstruction of the San Francisco-Oakland Bay Bridge.  Upgrading included the recladding of the canopy structure, replacing the crash cushions, removing existing pump station building, constructing a new pump station building over existing concrete slab, Stairway No. 7 removal, and painting the toll booths concrete …

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EBMUD, Main Wastewater Treatment Plant Digester Upgrade, Phase 2

The EBMUD Digester Upgrade Project, Phase 2, included:  rehabilitation of four existing two million gallon digesters by replacing the floating covers with fixed covers, adding internal mixers and new mechanical pumps and piping; rehabilitation of seven existing two million gallon digesters my adding mechanical pumps and piping; conversion of two secondary digesters to primary; construction of …

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Patterson Irrigation District Fish Screen Intake

Construction of a new fish screening facility on the San Joaquin River.  The work involved construction of a pile-supported 195 cubic feet per second pump station with a concrete constructed frame and top deck.  The structure had fish screens mounted on the face on the river side with a brush cleaning system and sedimentation system as ancillary components …

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BART Earthquake Safety Program, Station Structures – C Line

ProVen retrofitted three BART stations along the C-Line, connecting Oakland to Bay Point: Orinda, Walnut Creek, and Pleasant Hill.  These retrofits entailed the respective excavations of all the station’s footings, surface demolition of columns, and forming around and drilling into all bent caps, followed by casting new reinforced concrete members and wrapping aforementioned columns in carbon …

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Balboa Reservoir Site Development Geothermal Heat Exchange System

The Bay Area’s first geothermal heat exchange systems was created for the San Francisco Community College District.   The construction consisted of a closed loop geothermal system which uses the core temperature of the earth to reduce the amount of energy needed in order to supply heating or cooling to the Central Utility Plant at City …

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