NAICS & PSC Codes

NAICS
811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
221112 Fossil Fuel Electric Power Generation
221310 Water Supply and Irrigation Systems
221320 Sewage Treatment Facilities
236210 Industrial Building Construction
236220 Commercial and Institutional Building Construction
237110 Water and Sewer Line and Related Structures Construction
238120 Structural Steel and Precast Concrete Contractors
238290 Other Building Equipment Contractors
238910 Site Preparation Contractors
238990 All Other Specialty Trade Contractors
PSC
J034 Maintenance, Repair, and Rebuilding of Equipment- Metalworking Machinery
J035 Maintenance, Repair, and Rebuilding of Equipment- Service and Trade Equipment
J036 Maintenance, Repair, and Rebuilding of Equipment- Special Industry Machinery
J043 Maintenance, Repair, and Rebuilding of Equipment- Pumps and Compressors
J046 Maintenance, Repair, and Rebuilding of Equipment- Water Purification and Sewage Treatment Equipment
J056 Maintenance, Repair, and Rebuilding of Equipment- Construction and Building Materials
Y1ND Construction of Sewage and Waste Facilities
Y1NE Construction of Water Supply Facilities
Y1EZ Construction of Other Industrial Buildings
Y1AZ Construction of Other Administrative Facilities and Service Buildings
P400 Salvage- Demolition of Buildings
P500 Salvage- Demolition of Structures/Facilities (Other Than
Buildings)