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Active opportunities open for bidding
Delta Diablo Sanitation District
Delta Diablo (a California Special District) is soliciting construction bids for Phase 1 of its Secondary Process Improvements Project to address aging wastewater treatment infrastructure in Antioch, California. The scope includes construction of three aeration basins, a secondary clarifier, pumping stations, associated piping, blowers, thickeners, site improvements, and demolition of existing facilities, with an estimated construction value of approximately $140 million to $175 million. Bids are due August 5, 2026, with submission in paper format to Delta Diablo's offices at 2500 Pittsburg-Antioch Hwy, Antioch, California.
Posted Date
Jun 25, 2026
Due Date
Aug 5, 2026
Release: Jun 25, 2026
Delta Diablo Sanitation District
Close: Aug 5, 2026
Delta Diablo (a California Special District) is soliciting construction bids for Phase 1 of its Secondary Process Improvements Project to address aging wastewater treatment infrastructure in Antioch, California. The scope includes construction of three aeration basins, a secondary clarifier, pumping stations, associated piping, blowers, thickeners, site improvements, and demolition of existing facilities, with an estimated construction value of approximately $140 million to $175 million. Bids are due August 5, 2026, with submission in paper format to Delta Diablo's offices at 2500 Pittsburg-Antioch Hwy, Antioch, California.
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Board meetings and strategic plans from Delta Diablo Sanitation District
The Board conducted a public hearing to establish Sewer Service Charges for the upcoming fiscal year and authorize their collection on the tax roll. Staff recognized maintenance personnel for completing corrosion repairs on trickling filters and commended the Finance Division for receiving a Certificate of Achievement for Excellence in Financial Reporting. Additionally, the Board congratulated a chemist for receiving an emerging leader award and approved various items including budget appropriations, leave policies, and procurement contracts for chemicals and services. The Board also deliberated on the approval of a Memorandum of Understanding with the Management Association and revised standard employment agreements.
The Board conducted a public hearing regarding District position vacancies and recruitment and retention efforts as mandated by legislation. Several operational and financial items were authorized, including the establishment and funding of a new Wastewater Capital Asset Replacement Fund project for plant outfall enhancements, the approval of a fiscal year classification control plan, and the filing of an environmental notice of exemption for a forcemain repair. Additionally, the Board authorized various service agreements and contract amendments related to stormwater inspections, supervisory control and data acquisition support, confined space rescue services, and lab equipment replacement. Discussion also included proposed adjustments to street sweeping and sewer service charges, with future public hearings set to consider these financial matters, along with the receipt of the monthly check register.
The board meeting included a recognition for the Silver Peak Performance Award, the receipt of financial reports including the check register and the biennial budget book, and the adoption of resolutions regarding employee retirement, emergency services grant filing, and salary adjustments. Additionally, the board authorized construction contracts for wastewater system infrastructure and rehabilitation projects, and conducted a closed session concerning pending litigation related to regulatory compliance.
The board meeting agenda included the adoption of a resolution to fly District flags at half-staff in memory of a former board member. The Consent Calendar covered several items, including approval of a Memorandum of Understanding with the Professional and Technical Bargaining Unit, adoption of a resolution establishing FY25/26 appropriations limits, authorization for contract amendments related to construction management and electrical switchgear replacement, and approval of revised classification control plans. Additionally, authorizations were granted for construction contract change orders and the issuance of various purchase orders and chemical supply agreements for the upcoming fiscal year.
The Board conducted public hearings on the Capital Improvement Program and sewer service/delinquency charges. Recognition was given to a new operator-in-training. The Board approved the fiscal year budget and various appropriations, including amendments to general services and consulting contracts for janitorial, street sweeping, engineering, and equipment inspection services. Additional items addressed included the approval of purchase orders for chemical supplies, an inspection van, and a resolution regarding emergency repairs to the tower trickling filter.
Extracted from official board minutes, strategic plans, and video transcripts.
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