Mobility-Frequent operation of keyboards, sitting for extended periods, driving, standing for long periods, walking, bending/squatting, occasional climbing ladders, stairs; Lifting-Frequently lift 5 to 30 pounds; Vision-Good overall vision; frequent reading/close-up work, depth and color perception, and eye/hand coordination; Dexterity-Occasional holding, reaching, grasping, writing; Hearing/Talking-Frequent hearing and talking on the telephone or radio and in person; Emotional/Psychological-Frequent decision making, concentration, and working alone; frequent public contact; occasional exposure to emergency situations and hazardous materials; Environmental Conditions-Frequent exposure to noise, dirt, dust and varied weather conditions (outdoor); occasional exposure to indoor cold/heat; Special Conditions-May require occasional overtime, travel, weekend or evening work. Principles, practices, and materials used in landscape architecture, park construction, and engineering, including Computer Aided Design software, as applied to the preparation of designs, plans, specifications and cost estimates for landscape, buildings, recreation equipment and site development; characteristics and requirements of various plant life suitable for park and recreation areas in central California; the development and operation of water-oriented parks and recreation facilities; principles of land use planning; research principles and methodology; principles and practices of project management; land use regulations; grant application procedures and environmental impact reports; control of funds in capital projects.