Description: The work generally consists of installation of owner-furnished hydrocyclone and compressed air channel mixing systems, return activated sludge piping modifications, and installation, rental, and decommissioning of temporary bypass pumping, piping, and power infrastructure. The estimated cost of construction is $6,250,000. Central San, at its discretion, may add additional construction activities after the award of the Construction Contract. Only pre-qualified general contractors listed under the bid documents are allowed to submit bids.
SpecialDistrict · CA, US
Adjacent opportunities open for bidding right now.
CityNY
Posted
Oct 29, 2026
Dec 1, 2026
Furnishing all labor, materials, and equipment necessary to replace in-kind the existing Return Activated Sludge (RAS) pumps. Other related work includes in-kind valve and pipe replacement, as well as preparing, restoring, and cleaning the project area.
Central Contra Costa Sanitary District
Special DistrictCA
Posted
-
Nov 12, 2026
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.
CityNC
Posted
Jan 11, 2025
Nov 9, 2026
Requesting quotes for annual bulk purchase of powder activated carbon for the water treatment facility. The facility uses approximately 1,600,000 pounds of materials per year between 2 locations.
Provincial and Demonstration Schools
School DistrictON
Posted
Oct 16, 2026
Nov 17, 2026
The Ministry of Education’s Provincial and Demonstration Schools Branch is seeking one vendor to transcribe English- and French-language textbooks and other educational resources for Alternate Educational Resources Ontario (AERO). The deliverables are Braille, DAISY Digital Audio Recording, and E-Text Word formats for elementary, secondary, and post-secondary students, including complex content such as mathematical notation, tables, charts, and graphics. The initial contract term is 24 months, with services intended to be operational by December 20, 2026.
From the first pre-RFP signals to the published RFP and its files.
Capital improvement plan
Central San's in-progress Nutrient Management Project included study and pilot testing of DAS within the existing secondary treatment process.
Regulatory Compliance (Includes Planning and Safety Projects) This subprogram includes projects that focus on preparing for future regulations and ensuring compliance with existing regulations, including pilot testing of new technologies. Solids handling and incinerator equipment improvements, along with incinerator emissions upgrades, are underway as part…
Central Contra Costa Sanitary District Capital Improvement Plan (CIP) Budget 2026-2027
Capital improvement plan · 2026
The Nutrient Management Project is currently in progress, focusing on the continued study and pilot testing of innovative technologies such as the Membrane Aerated Biofilm Reactor (MABR) and Densified Activated Sludge (DAS) within the existing secondary treatment process. This project also aims to improve nutrient management within the existing facilities…
Central Contra Costa Sanitary District Strategic Plan 2026-2028
Strategic plan · 2026
Strategic plan
The Board authorized a $7.5 million Sewer Construction Fund budget amendment for the Nutrient Management project.
Budget Amendments During FY 2025-26, the Board authorized a transfer of $1.6 million of prior year favorable budgetary variance to the Pension Pre-funding trust to respond to a slight decline in Central San's pension plan funded position. Additionally, following the close of FY 2024-25, lower-than-budgeted spending in the Capital Improvement Program (CIP)…
Central Contra Costa Sanitary District Strategic Plan 2026-2028
Strategic plan · 2026
Meeting agenda
47 days before RFP
The agenda proposed a $1.2 million amendment to HDR Engineering’s existing agreement for Densified Activated Sludge Demonstration design.
\|---\|---\|---\|---\| \| \| 6. \| AUTHORIZE THE GM TO AMEND EXISTING AGREE- MENT WITH HDR ENGINEERING, INC., FOR AN ADDITIONAL $1.2 MILLION FORÂ DENSIFIED ACTIVATED SLUDGE DEMONSTRATION DESIGN UNDER NUTRIENT MANAGEMENT Â Staff Recommendation (Mo- tion Required): Approve the Consent Calendar as recommended. Position Paper \| View Item Details \|
Board of Directors Regular Board Meeting
Meeting agenda · Sep 3, 2026
Meeting agenda
5 days before RFP
The agenda proposed equipment agreements with Veolia and Enviromix for the Densified Activated Sludge Demonstration.
\|---\|---\|---\|---\| \| \| 4. \| ADOPT RESOLUTION NOS. 2026-033 AND 2026-034 TO DECLARE EXEMPTION FROM COMPETITIVE BID PROCESS; AUTHO- RIZE GMÂ TO EXECUTE EQUIPMENT AGREEMENTS WITH VEOLIA WTS SYSTEMS USA, INC., AND ENVIROMIX, INC., FOR $1,125,000 AND $480,000, RESPECTIVELY, FORÂ Â DENSIFIED ACTIVATED SLUDGE DEMONSTRATION; AND FIND AGREEMENTS EXEMPT FROM…
Central San Board Of Directors Regular Board Meeting
Meeting agenda · Oct 15, 2026
RFP published
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Lastly, to address higher-than-anticipated construction costs for the Nutrient Management project, the Board authorized a budget amendment to increase appropriations in the Sewer Construction fund by $7.5 million.
Central Contra Costa Sanitary District Strategic Plan 2026-2028
Strategic plan · 2026
Decision makers connected to this RFP from Central Contra Costa Sanitary District.
