Knowledge of: Applicable Federal, State and local laws, ordinances and regulations relevant to assigned duties; principles and practices of employee supervision, including work planning, assignment, training, review, evaluation and discipline of staff; operational functions of parks, playground, turf and sports field maintenance and installation, landscape maintenance; tree care; irrigation and drainage system repair, installation and maintenance; plumbing, electrical, carpentry, heating, ventilation, and alarm systems; operational functions of natural resource, recreational and open space area construction, maintenance and repair; habitat protection and enhancement; forest management activities; trails, bridges, fences and access road repairs and maintenance; proper materials, tools, equipment and procedures required to safely and efficiently perform duties in area of responsibility; principles of contract administration for parks, facilities or natural resource projects; basic principles and practices of budget and Capital Improvement Program administration and accountability; safety principles and practices including equipment and hazardous materials; principles and procedures for recordkeeping, purchasing, and inventory control; modern office procedures, personal computers and applicable software programs; principles and practices of effective customer service, both in person and over the telephone. Ability to: Oversee, direct, and coordinate technical and operational work of assigned staff, including training, motivating, counseling and evaluating; coordinate and supervise parks, facilities, natural resource areas and storm water maintenance, repair and construction projects; perform contract management and site inspection processes; perform, read, understand, interpret and apply a wide variety of general plans and technical written materials; calculate cost estimates and determine quantities of material and personnel requirements; prepare accurate written and/or typed materials, including work orders, requisition forms and other reports; communicate effectively, both orally and in writing; provide operational supervision to assigned staff; determine and assign priorities in emergency situations; operate a personal computer including spreadsheet, records management, and word processing applications; establish and maintain cooperative working relationships with a wide variety of community partners; maintain an efficient system of response to the diverse needs and inquiries from the public; maintain cooperative and effective working relationships with other departments and staff contacted in the course of work.