Seller will provide supervision, labor, transportation, replacement parts, modification, calibration, installation, and maintenance of field instrumentation, fixed gas monitoring equipment, valve actuators, control systems, programmable logic controllers (PLC), ultra-violet disinfection systems, human machine interfaces (HMI), and other related equipment at various facilities. Any travel, project management, and mobilization costs should be included in the Bid pricing. The instrumentation and control (I&C) technicians must be experienced in standard principles, practices, and troubleshooting of instrumentation, process control systems, PLC and HMI maintenance, and programming, instrumentation loops, reading process and instrumentation diagrams (P&ID), various type of pressure, level, flow, hazardous gases equipment calibration standards and procedures, and various systems directly related to all Water Pollution Control (WPC) facilities. Each of the technicians shall be able to work independently/alone and troubleshoot, repair, and maintain I&C components at all WPC facilities within an acceptable timeframe.