haul units with a hydraulic excavator; excavates, stockpiles, backfills, constructs ditches, and loads haul units with a backhoe loader; drives, spreads, and dumps material with a dump truck; drives, loads, and sprays. and spreads fill material with a motorized scraper; excavates, stockpiles, backfills, and loads haul units with scoop loader; scarifies, spreads, levels and constructs V ditches with a motorized.