8(a)

Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction

concrete, construction, footers, walls, slabs, sidewalks, curbs, stamped concrete, stained concrete, decorative concrete

Highway, Street, and Bridge Construction, Ornamental and Architectural Metal Work Manufacturing, Other Communications Equipment Manufacturing, Other Lighting Equipment Manufacturing, Sign Manufacturing

Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Land Subdivision, Highway, Street, and Bridge Construction

Highway, Street, and Bridge Construction, Painting and Wall Covering Contractors, Other Building Finishing Contractors, All Other Specialty Trade Contractors, Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers

SITE PREPARATION

asphalt maintainence, crack repair, asphalt seal coating, pavement marking.

New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders, Residential Remodelers, Industrial Building Construction

Industrial Building Construction, Commercial and Institutional Building Construction, Water and Sewer Line and Related Structures Construction, Oil and Gas Pipeline and Related Structures Construction, Power and Communication Line and Related Structures Construction

Commercial and Institutional Building Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Engineering Services, Surveying and Mapping (except Geophysical) Services

Support Activities for Oil and Gas Operations, Support Activities for Coal Mining, New Single-Family Housing Construction (except Operative Builders), New Multifamily Housing Construction (except Operative Builders), New Housing Operative Builders

Highway, Street, and Bridge Construction, All Other Specialty Trade Contractors, General Freight Trucking, Local

bridge, concrete, piling

NAICS code 237310

Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction

Industrial Building Construction, Water and Sewer Line and Related Structures Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Other Building Material Dealers

Power and Communication Line and Related Structures Construction, Highway, Street, and Bridge Construction, Other Heavy and Civil Engineering Construction, Electrical Contractors

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

Highway, Street, and Bridge Construction, Electrical Contractors, Architectural Services, Landscape Architectural Services, Engineering Services