California's Central San inks $5.8M sole-source deal with Veolia for MABR demo

California's Central San inks $5.8M sole-source deal with Veolia for MABR demoThe San Francisco Bay Area utility is fast-tracking a full-scale demonstration of the advanced nutrient removal technology to prepare for stringent future regulations. The board approved the equipment purchase agreement under a consent calendar, signalling strong internal support for the project.

Central San's board approved a sole-source purchase agreement with Veolia WTS Systems USA, Inc. for MABR equipment.

The contract is valued at up to $5,800,000 and is for a full-scale demonstration project.

The project is a key component of the utility's broader 'Nutrient Management, District Project 100078' initiative.

The board declared an exemption from competitive bidding to implement the demonstration, citing the need to fulfill the project's specific goals.

The decision was passed as part of a routine consent calendar, indicating a smooth and uncontested approval process for the major capital expenditure.

The Central Contra Costa Sanitary District (Central San) in California has taken a significant step in its nutrient management strategy, authorising a sole-source equipment purchase agreement with Veolia WTS Systems USA, Inc. worth up to $5.8 million. The deal, approved by the district’s board of directors on 20 November 2025, will secure Membrane Aerated Biofilm Reactor (MABR) technology for a full-scale demonstration project. The procurement is a central piece of Central San’s ‘Nutrient Management, District Project 100078’, an initiative designed to position the utility ahead of expected stringent nutrient discharge limits in the San Francisco Bay Area. By pursuing a full-scale demonstration, the district aims to validate the technology’s performance and operational requirements under real-world conditions before considering a wider, more permanent implementation. The board’s approval was granted via a consent calendar, a procedural tool for passing routine items without debate. The unanimous 5-0 vote indicates that the project, its cost, and the sole-source procurement strategy faced no opposition from the board members, having been vetted at the committee level. To facilitate the direct deal with Veolia, the board adopted Resolution No. 2025-039, which makes findings to confirm and declare an exemption from the standard competitive bidding process. This move suggests the district sees Veolia’s MABR technology as uniquely suited for its demonstration goals. The MABR procurement was not the only significant capital item to move forward. The same consent calendar vote also authorised the general manager to execute a contract amendment with consultant Hazen and Sawyer for final design services on the utility’s ‘Secondary Clarifier and Channel Upgrades’ project. The amendment adds $2,060,000 to the contract, bringing the new cost ceiling to $4,060,000. This parallel investment in core secondary treatment infrastructure highlights the utility's multi-faceted approach to modernising its treatment works. While these major capital decisions passed without public discussion, the meeting was dominated by a lengthy governance training session that revealed underlying tensions within the board regarding its role in technical oversight. The training, facilitated by District Counsel Leah Castella, sparked a deep debate among board members about the appropriate level of inquiry into operational and engineering details during public committee meetings. The discussion highlighted a classic governance challenge in the water sector: managing the contributions of board members with deep technical expertise. Director Tad Pilecki, a registered engineer with 38 years of prior employment at the district, argued for his right and responsibility to ask detailed technical questions during committee updates on projects like the nutrient management program. 'I have seen problems that we've had... I'll ask, have you looked at this or have you done this? Not to direct staff, but because I have the benefit of having seen stuff that a lot of them haven't even been here for,' Pilecki stated, adding that he felt his professional license obligated him to raise such issues. In contrast, other board members and the district counsel cautioned against getting too far ‘into the weeds’ in a public setting. Director Barbara Hockett countered, 'The way you described it, that is how it would seem [like critiquing work]... there's other perspectives that I'm asking you... to be considered.' Counsel Castella emphasised that the purpose of committee meetings is to gather enough information to make a policy recommendation, not to manage staff or delve into operational minutiae that may be inaccessible to the public. 'Your audience is the public, and your job is to get what you need in order to either make a recommendation for approval or to approve,' she advised. The extensive debate underscores the delicate balance utilities must strike as they undertake complex, technologically advanced projects. While Central San's board is clearly aligned on the strategic direction for nutrient management, as evidenced by the smooth approval of the Veolia MABR contract, the process of overseeing its implementation continues to be a subject of internal negotiation. As the district moves forward with this multi-million-dollar demonstration, the dynamic between its technically-minded board and its professional staff will be critical to navigating the project's execution.