Directs and participates in skilled analysis and repair of equipment, systems and vehicles; Supervises highly-skilled fabrication or modifications of existing or proposed equipment, facilities, systems or their components from verbal directions, sketches, plans, engineering drawings or technical references; Supervises and participates in the inspection, service and maintenance of tools, equipment and vehicles; Performs quality control analysis on equipment or supported systems for proper functioning and directs remedial actions necessary to assure optimum operations; Maintains comprehensive activity, operations, service and usage records on supported vehicles, equipment and systems; Directs scheduling and planning of maintenance activities using a computer-based word order system; Develops, monitors and adjusts work-unit budgets; Prepares oral and written activity reports; Prepares estimates for unique operations, maintenance and special projects from rough sketches and engineering plans or drawings, and documents use or expenditure of materials, supplies and equipment; Inspects, approves and (if certified or authorized) certifies the work of others; Assists management in development of Requests For Bids, pertinent provisions in contracts, and bid proposal evaluations in area of own expertise and responsibility; Prepares sketches and drawings for work proposed or in-progress to communicate needed information to supervisors, subordinates and/or contractors; Coordinates work-unit activities with other work-units, agencies or contractors to assure optimal use of available resources and to minimize disruptions of service or support; Monitors contractor performance (including contractor-supplied goods and services); Directs proper storage, handling, use and disposal of hazardous materials required/encountered in activities; Supervises procurement-related activities of assigned staff; Assures work-units and staff maintains security and accountability for all tools, equipment and materials, particularly for work in medical, law enforcement, detention or correctional settings; Maintains and correctly uses safety and personal protective equipment; Coordinates or provides required training of assigned work-unit staff in common and unique techniques and skills, safety and related topics; Ensures compliance with all federal, state and County policies and procedures relative to area of assignment; Directs implementation of work-site traffic control procedures to ensure safety; Explains rules, regulations or procedures to the public and other County employees for use of County facilities. Action/physical activity - bending, use foot controls, hand controls, reaching, standing, walking, simple and firm grasping, working in noisy areas; Hearing requirements - working in noisy areas, on the phone, being themselves, exposed to alarms and/or high-pitched noises; Speaking - in person, on the phone; Mental Efforts - analytical thinking, effective verbal communication skills, handling stress and emotions, concentrating on tasks, remembering names, examining and observing details, remembering details, making decisions, adjusting to change, staying organized, using math calculations, problem solving, multi-tasking, making connections between facts, maintaining stamina, meeting deadlines, attending meetings, working effectively with coworkers and the public, working alone, writing, keyboarding/typing, answering phones, working rotating shifts.