“Educational institution” means elementary schools, junior high schools, middle schools, high schools, junior colleges, community colleges, colleges, or universities, or other schools giving general academic instruction in several branches of learning and study required by the education code of the state.

“Environmentally sensitive areas” means any of those areas of the city which are subject to natural hazards or those landform features which in their natural state carry, hold, or purify water; support unique, fragile, or valuable natural resources including fish, wildlife, and other organisms and their habitat; provide ground water recharge; stabilize soil; and control erosion. Environmentally sensitive areas include the following landform features: hillsides, wetlands, streams, critical aquifer recharge areas, and the protective buffers necessary to protect the public health, safety, and welfare.

Equipment, Heavy Duty. “Heavy duty equipment” means high capacity mechanical devices for moving earth or other materials, mobile power units, including, but not limited to, carryalls, graders, loading and unloading devices, cranes, drag lines, trench diggers, tractors, augers, caterpillars, concrete mixers and conveyors, harvesters, combines, or other major agricultural equipment and similar devices operated by mechanical power as distinguished from manpower.