Grading, land clearing (non-wet), trenching, excavating, bulldozing, backhoe, tractor, bushhog, mowing, front loader,

Commercial, Industrial, Highway, Plumbing, Electrical, Framing, Masonry, Glass, Roofing, siding

New Single-Family Housing Construction (except Operative Builders), Residential Remodelers, Commercial and Institutional Building Construction, Water and Sewer Line and Related

Water Supply and Irrigation Systems, Water and Sewer Line and Related Structures Construction, Land Subdivision, Other Heavy and Civil Engineering