At least 5 years of relative experience, to include at least 2 years of relevant progressively responsible experience, operating, maintaining, repairing, and rebuilding mechanical equipment and infrastructure, including pumps, motors, valves, tanks, piping systems, and related components. At least 9 years of relative experience, to include at least 2 years of relevant progressively responsible experience, operating, maintaining, repairing, and rebuilding mechanical equipment and infrastructure, including pumps, motors, valves, tanks, piping systems, and related components.