[237310] (Primary) Highway, Street, and Bridge Construction
[237990] Other Heavy and Civil Engineering
[221112] Fossil Fuel Electric Power Generation
[221119] Other Electric Power Generation
[221121] Electric Bulk Power Transmission & Control
[221122] Electric Power Distribution
[237110] Water and Sewer Line and Related Structures
[237130] Power & Communication Line & Related Structures Construction
[237210] Land Subdivision
[236220] Commercial and Institutional Building Construction
[238110] Poured Concrete Foundation Structure
[238120] Structural Steel and Precast Concrete
[238190] Other Foundation, Structure, and Building Exterior
[238990] All Other Specialty Trade
[238910] Site Preparation
[221310] Water Supply and Irrigation Systems
[221320] Sewer Treatment Facilities
[238160] Roofing Contractors
[238210] Electrical Contractors and Other Wiring Installation Contractors
[238220] Plumbing, Heating, and Air-Conditioning Contractors
[541310] Architectural Service
[562112] Hazardous Waste Collection
[562219] Other Nonhazardous Waste Treatment and Disposal
[562910] Remediation Services
[562998] All Other Miscellaneous Waste Management Services