Seeing, color perception, hearing, clear speech, dexterity in hands, driving, lifting, climbing, ability to mount and dismount equipment, pushing, pulling, warm and cold temperature conditions, sun exposure, moisture, potential exposure to hazardous materials and electrical voltages. On-site environment could require work in various temperature conditions; in and/or around moisture, on slippery and/or uneven surfaces; will require frequent standing, and occasional bending, squatting, climbing, twisting, balancing, and reaching; will have exposure to noise, vibrations and chemicals.