541310 Architecture Services
541330 Engineering Services
541340 Drafting Services
541350 Building Inspection Services
541370 Surveying and Mapping Services
541380 Testing Laboratories
541620 Environmental Consulting Services
561210 Facilities Support Services
561439 Reprographic Services
561910 Packaging and Labeling Services
562211 Hazardous Waste Treatment and Disposal
562910 Remediation Services
236210 Industrial Building Construction
236220 Commercial and Institutional Building Construction
237110 Water/Sewer Line and Related Structures Construction
237120 Oil/Gas Pipeline and Related Structures Construction
237210 Land Subdivision
237310 Highway, Street, and Bridge Construction
237990 Other Heavy and Civil Engineering Construction
238110 Poured Concrete Foundation/Structure Contractors
238190 Other Foundation, Structure, and Building Exterior Contractors
238910 Site Preparation Contractors
238990 Specialty Trades