For indefinite periods of time - mobility within an office and field environment; exposure to fumes, odors, dust/mites, electrical, mechanical and chemical hazards; exposure to extreme cold, heat, heights temperature swings and constant noise; walking; twisting body; working in trenches; stooping; standing; squatting; sorting; sitting; seeing; running; kneeling; grasping; crawling; climbing; cleaning; reading; decision making; reaching above shoulder level; pushing, pulling, lifting and carrying up to 100 pounds; using both hands for simple and firm grasping; climbing stairs; clarity of hearing; communicating clearly and effectively, in person, by two-way radio, and by telephone; fine finger manipulation; operation of tractor, mechanical lift, power tools, and hand tools; operating a motor vehicle and bus through city traffic. To perform a variety of semi-skilled and skilled tasks in the maintenance and repair of municipal buildings or facilities and grounds; and to perform minor maintenance on equipment.