Delta Diablo (District) prioritizes the repair and replacement of its equipment and facilities via a comprehensive Capital Improvement Program (CIP).  This reflects strong fiscal responsibility ensuring successful, long-term rehabilitation of our infrastructure and investment of ratepayer funds to provide essential community wastewater services to residents and businesses in Antioch, Bay Point, and Pittsburg.

Cogeneration System Improvements

The District operates an existing cogeneration system at the Wastewater Treatment Plant capable of generating heat for the anaerobic digesters as well as producing energy to reduce the amount of power needed to be purchased from the grid to run the plant. The existing gas treatment system and cogeneration engine are nearing the end of their useful life and require replacement. The Cogeneration System Improvements project will include the replacement of the existing cogeneration engine and gas conditioning equipment as well as upgrades to electrical and control infrastructure. The project is eligible for federal tax credits for the District under the Inflation Reduction Act, but specific requirements must be met by both the District and Contractor under the IRS regulations regarding labor, scheduling, and domestic content to maintain the integrity of the Inflation Reduction Act. Projects like the Cogeneration Systems Improvement project are instrumental in enhancing the District’s resource recovery capabilities and promoting more efficient and reliable performance.

Point of contact:  Murat Bozkurt, Engineering Services Director/District Engineer, muratb@deltadiablo.org

Project Status: 95% Design

Resource Recovery Facility Master Plan

The District completed a Resource Recovery Facility Master Plan (RRFMP) in 2022 to provide the District with a strategic planning document focused on near- and long-term infrastructure improvements to address asset condition, hydraulic capacity, treatment capacity, and regulatory requirements. The RRFMP evaluated components of the District’s Wastewater Treatment Plant (WWTP), Recycled Water Facility (RWF), and supporting infrastructure. The RRFMP is intended to provide the District with an integrated and strategic guidance document with in-depth analysis in key areas to guide significant infrastructure investment decisions in the near and long term. The RRFMP is an “action-oriented” document that highlights specific measures and triggers that support decision making over the next few years, while maintaining a 20-year planning horizon.

Point of Contact:  Brian Thomas, Deputy General Manager, briant@deltadiablo.org

Project Status: Complete

• 2022 Resource Recovery Facility Master Plan

Treatment Plant Switchgear Replacement 

The switchgear system distributes utility and back-up emergency power to the Wastewater Treatment Plant, Treatment Plant building, and Household Hazardous Waste Facility. The existing Treatment Plant switchgear is nearing the end of its useful life and requires replacement.

Point of contact:  Sean Williams, Acting Senior Engineer, seanw@deltadiablo.org 

Project Status: Under construction