Essential Duties and Responsibilities. The essential functions include, but are not limited to the following. Operating trucks of various sizes and weights in the loading, hauling and unloading of various equipment, materials, and supplies. Operating trucks and construction or power equipment, such as mechanized broom, backhoe, man-lift, dump truck, snowplow, road grater, front-end loader, hydraulic excavators, and skid steers. Operating jackhamm...