Bid Notice.pdf
PDF 154 KB Posted
- Attached to
- Requests for Statements of Pre-Qualifications from Interested General Contractors for the DAS Demonstration
- Solicitation number
- DP 100104
- Issued by
- Contra Costa County, California
About this file
This is a Bid Notice issued by the Central Contra Costa Sanitary District in Martinez, California, inviting requests for statements of pre-qualifications from interested general contractors for the DAS Demonstration project (DP 100104). The work consists of installing a full-scale demonstration of the Densified Activated Sludge (DAS) process, including a hydrocyclone-based physical selection system, compressed air channel mixing system, RAS piping modifications, temporary bypass pumping and piping, and power infrastructure. The invitation was posted on September 14, 2026, with pre-qualification statements due electronically via PlanetBids by October 5, 2026, at 4:00 p.m. (PDT). An online question and answer period is available with a deadline of September 23, 2026, at 5:00 p.m. (PDT). No in-person pre-bid meeting is scheduled. Prospective bidders must submit a GC-SOPQ package in the form provided by the District, with all documents available and managed exclusively through the District's PlanetBids portal.
The contract is structured as a lump sum award classified under construction services categories (91200, 91300, and 91400). No bid bond, payment bond, or performance bond percentages are specified in the notice. Prospective general contractors must be registered with the California Department of Industrial Relations (DIR) as a public works contractor to meet the new SB 854 requirement, and the District will restrict bids to CA DIR-registered vendors only. Interested bidders should register with CA DIR and update their vendor profiles accordingly. Further information and contact details are available through the District's Engineering Department at 5019 Imhoff Place, Martinez, California 94553, by telephone at 925-957-7628, or by email at CapitalAdmin@centralsan.org.
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Text version
Central Contra Costa Sanitary District
Opportunity Detail
Bid Bond
Pre-Bid Meeting Information
Online Q&A
Contact Information
Description
Requests for Statements of Pre-Qualifications from Interested General Contrac
Title Requests for Statements of Pre-Qualifications from Interested General Contractors for the DAS Demonstration, DP 100104
Invitation # Posting Date 09/14/2026 8:29 PM (PDT)
Project Stage Bidding Bid Due Date 10/05/2026 4:00 PM (PDT)
Response Format Electronic
Type RFQual (Request for Qualification) Response Types Response File
Type of Award Lump Sum Categories 91200 - Construction Services, General (Incl. Maintenance And Repair Services)
91300 - Construction Services, Heavy (Incl. Maintenance And Repair Services) 91400 - Construction Services, Trade (New Construction)
License Requirements A
Preferences CADIR - Registered DIR Public Works Contractor
Department Engineering
Address 5019 Imhoff Place Martinez, California 94553
County Contra Costa
Offer Valid Liquidated Damages Estimated Bid Value Start/Delivery Date
Project Duration
Bid Bond 0.00% Payment Bond 0.00%
Performance Bond 0.00%
Pre-Bid Meeting No
Online Q&A Yes Q&A Deadline 09/23/2026 5:00 PM (PDT)
Contact Info Capital Projects Admin 925-957-7628 CapitalAdmin@centralsan.org
Bids to Central Contra Costa Sanitary District Owner's Agent William Grant
9/19/26, 8:01 PM PlanetBids Vendor Portal https://vendors.planetbids.com/portal/14663/bo/bo-detail/146192 1/2
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Scope of Services The work generally consists of installing a full-scale demonstration of the Densified Activated Sludge (DAS) process, including a hydrocyclone-based physical selection system, compressed air channel mixing system, RAS piping modifications, temporary bypass pumping and piping, and power infrastructure.
Other Details Prospective General Contractor Bidders interested in submitting bids on the DAS Demonstration, District Project 100104 must be pre-qualified by submitting a GC-SOPQ package in the form provided by Central San. This GC-SOPQ, including this document, questions and answers, addenda, reference information, submitting proposals, and other relevant documents will be available and managed exclusively via Central San’s bid portal, PlanetBids.
An electronic, signed copy of the GC-SOPQ must be uploaded to PlanetBids by October 5, 2026, no later than 4:00 p.m., local time.
Notes Special Notices Please register with CA DIR for the new SB 854 requirement. Once you have registered, please update your vendor profile. We will be restricting bids per this new requirement to only CA DIR registered vendors.
Local Programs & Policies www.vendorline.com
9/19/26, 8:01 PM PlanetBids Vendor Portal https://vendors.planetbids.com/portal/14663/bo/bo-detail/146192 2/2 https://vendor.planetbids.com/
File details come from the government source that posted it. Updated .