Renovation of a water / sewer project in Oakley, California. Completed plans call for the renovation of a water / sewer project.

The Randall-Bold Water Treatment Plant (see Image 1 below) is a critical facility located in Oakley, California, jointly operated and maintained by the Contra Costa Water District (CCWD). The plant has the capacity to treat up to 50 million gallons of water per day (MGD) and plays an essential role in providing clean and safe drinking water to the surrounding communities. The existing Programmable Logic Controller (PLC) and Remote I/O (RIO) infrastructure at the plant has reached or is nearing the end of its useful life. To ensure continued reliability, maintainability, and alignment with current industry standards, CCWD is seeking a qualified contractor to replace all outdated PLCs, RIO components, and related control infrastructure with modern Modicon PLC platforms and X80 Remote I/O components. This modernization effort includes the upgrade or replacement of Local Operator Panels (LOPs) and control panels located throughout the facility, as well as the replacement of terminal blocks, fuses, relays, radios, power supplies, patch panels, and other obsolete components that may no longer meet operational or safety standards. All work shall adhere to CCWD's wiring, labeling, and tagging standards to ensure consistency and maintainability across all facilities. Question Deadline 12/18/2025 at 4:00 PM PT Questions concerning Randall Bold Water Treatment Plant DCS PLC Upgrade should be directed to the CCWD Purchasing Officer at ccwdpurchasingrequests@ccwater.com DCS PLC Upgrade Type of Award Lump Sum Questions: Online Q&A No Contact Info Bid Administrator 925-688-8220 ccwdpurchasingrequests@ccwater.com