NAICS

236220*

Commercial And Institutional Building Construction

236210

Industrial Building Construction

237110

Water And Sewer Line And Related Structures Construction

237120

Oil And Gas Pipeline And Related Structures Construction

237310

Highway, Street, And Bridge Construction

237990

Other Heavy And Civil Engineering Construction

334290

Other Communications Equipment Manufacturing

541512

Computer Systems Design Services

561210

Facilities Support Services

561621

Security Systems Services (Except Locksmiths)

562112

Hazardous Waste Collection

562211

Hazardous Waste Treatment And Disposal

562219

Other Nonhazardous Waste Treatment And Disposal

562910

Remediation Services