Delta Diablo - Digester Nos. 1 and 3 Rehabilitation Project - 25116-B (2026)
Delta DiabloSpecial District · Antioch, CA- Due
- Nov 10, 2026
- 24 days left
- Posted
- Oct 15, 2026
- Primary contact
- Sean Williams
- (925) 756-1926
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SUMMARY
The Digester Nos. 1 and 3 Rehabilitation Project (No. 25116) involves rehabilitation of two existing anaerobic digesters at Delta Diablo's wastewater treatment plant in Antioch, California.
Work includes digester cleaning, concrete and coating repairs, replacement of process equipment, piping, valves, instrumentation, sludge sampling and heat exchange systems, installation of variable frequency drives (VFDs), drainage improvements, exterior coating repairs, bird netting replacement, and associated testing and commissioning. The submission deadline is November 10, 2026, with a notice of interest deadline on November 3, 2026.
- Submit to
- 2500 Pittsburg-Antioch Hwy, Antioch, California, 94509
- Scope location
- Antioch, California
Questions about this RFP
How do I respond to this Bid from Delta Diablo?
Review the full solicitation document for submission requirements, evaluation criteria, and deadlines. The submission deadline is November 10, 2026. Submissions should be delivered to: 2500 Pittsburg-Antioch Hwy, Antioch, California, 94509. For questions, contact Sean Williams.
Can small businesses or minority-owned firms bid on this Bid?
Most government agencies, including Delta Diablo in CA, encourage participation from small businesses, minority-owned, women-owned, and disadvantaged business enterprises (MBE/WBE/DBE). Check the full solicitation for any small business participation goals.
What happens after the Bid submission deadline?
After the deadline, the issuing agency reviews all submissions against the stated evaluation criteria. This typically includes a compliance check, technical evaluation, cost analysis, and may involve oral presentations with shortlisted vendors.
Can I ask questions about this solicitation before submitting?
Yes, most solicitations allow vendors to submit questions during a designated period. The primary contact is Sean Williams at (925) 756-1926. Questions and answers are typically shared with all prospective bidders.
Can I search Bids like this in ChatGPT or Claude?
Yes. Civic IQ has an MCP server that connects ChatGPT, Claude and other AI assistants to live Civic IQ data: open RFPs, pre-RFP signals from public meetings, awarded contracts and agency decision-makers across 100,000+ US public agencies. Add https://beta.mcp.civiciq.com/mcp as a connector (in ChatGPT under Settings > Apps & Connectors, in Claude under Settings > Connectors) and sign in with a free Civic IQ account at civiciq.com/mcp.
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Where can I find more RFPs from Delta Diablo?
All active and historical solicitations from Delta Diablo are tracked and searchable. As a special district agency, Delta Diablo regularly publishes solicitations. Visit the agency profile to see current open bids, past contracts, vendor relationships, and decision-maker contacts.
Is this solicitation still open for submissions?
Based on the posted deadline of November 10, 2026, this solicitation appears to still be accepting submissions. Deadlines may change through amendments or addenda, so always verify the current status directly with the issuing agency before preparing your response.
What documents are required to bid on this Bid?
Requirements vary by solicitation, but common documents include a technical proposal, cost/price proposal, proof of insurance, relevant certifications, past performance references, and any forms specified in the solicitation. Review the full document from Delta Diablo for the complete list.
What is the scope of this project?
This solicitation defines a specific project scope. The scope covers the following locations: Antioch, California. Review the full solicitation for detailed scope requirements.