Central San Board Meeting Agenda Packet April 2026
Change Order for MABR Demonstration to C. Overaa
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Description
Central San will consider authorizing a construction contract change order of up to $5.5 million with C. Overaa & Co. to complete and install the Membrane Aerated Biofilm Reactor demonstration system at its treatment plant. The work covers remaining process piping, electrical, instrumentation, and integration activities needed to bring the new nitrogen-removal technology online.
Contract Details
Contract Amount
up to $5.5 million
Vendor
C. OVERAA & COMPANY
Agency
Central Contra Costa Sanitary District, CA
Contract Type
CONSTRUCTION
Document Date
April 16, 2026
Renewal Info
This is an additional change order under the existing Aeration Basin Diffuser Replacement, Phase 1 construction contract; prior change orders covered preparatory work for the MABR system.
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