Under direction, the Lead Mechanic leads, oversees, and participates in the work of staff responsible for the maintenance, repair, servicing, rebuilding, and troubleshooting of equipment, vehicles, and machinery found in wastewater treatment plants, collection systems, pumping stations, and related facilities; oversees and participates in cleaning sewer lines, manholes, and wet wells; ensures high-precision, millwright craftsmanship work quality; oversees and participates in performing the most complex and difficult preventive, predictive, and corrective maintenance on assigned equipment, vehicles, and machinery; and performs duties as assigned. Specifically, this Lead Mechanic leads and coordinates the work of technicians and crane operators engaged in the inspection, preventive maintenance, diagnosis, repair, and services of OC San fleet vehicles, heavy equipment, specialized equipment, and related fleet assets; provides technical guidance; coordinates maintenance activities and resources; supports regulatory compliance and emergency operations; and performs complex mechanical work as required.