Instrumentation and Controls Services

The City of Benicia Public Works Department is requesting proposals from qualified companies for instrumentation and controls services during the fiscal years 2026-2027 and 2027-2028. The selected proposer will enter into a contract to perform all services outlined in the attached scope of work. The contract may be renewed for two additional fiscal years (for a maximum of four total fiscal years) based on mutual agreement by the City and Consultant.

The City of Benicia is a general law city located in Solano County. The wastewater system consists of an upstream collection system that includes 23 sewage lift stations and a 4.5 MGD conventional Wastewater Treatment Plant (WWTP) that discharges effluent to the Carquinez Strait. Each of the 23 sewage lift stations utilizes Schneider Electric PLC units that independently control the stations. Various information is collected and transmitted to the WWTP from each station via wireless cell technology telemetry system. The WWTP automated control system utilizes a fiber-optic network that moves information between the main SCADA computers and all in-plant PLCs and remote I/O in the treatment plant. Each PLC location is equipped with two Schneider Electric PLCs and Schneider Electric I/O racks for area-specific process control. The most recent compatible Schneider Electric software is used to program the plant and lift stations PLCs. The SCADA computers operate using hot-standby Citect SCADA software and redundant Win-911 alarm notification software. The City will maintain all associated programming and control systems licenses.