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Standard Industrial Classifications Codes (SIC Codes) /
North American Industry Classification System (NAICS)

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2371Utility System Construction
This industry group comprises establishments primarily engaged in the construction of distribution lines and related buildings and structures for utilities (i.e., water, sewer, petroleum, gas, power, and communication). All structures (including buildings) that are integral parts of utility systems (e.g., storage tanks, pumping stations, power plants, and refineries) are included in this industry group.

2372Land Subdivision
This industry group comprises establishments primarily engaged in servicing raw land and subdividing real property into lots, for subsequent sale to builders. Land subdivision precedes building activity. The building sites created by land subdivision may be residential lots, commercial tracts or industrial parks.

Servicing of raw land entails some physical improvements, such as land clearing or excavation work for the installation of roads and utility lines. While the extent of work varies from project to project, the establishments classified in this industry are primarily engaged in subdivision activity that includes physical improvement of the land. Establishments that perform only the legal subdivision of land are not included in this industry.

2373Highway, Street and Bridge Construction
This industry group comprises establishments primarily engaged in the construction of highways (including elevated), streets, roads, airport runways, public sidewalks, or bridges. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialized trade activities related to highway, street, and bridge construction (e.g., installing guardrails on highways) are included.

2379Other Heavy and Civil Engineering Construction
This industry group comprises establishments, not classified to any other industry, primarily engaged in constructing heavy and civil engineering works. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialized trade activities related to these engineering and civil construction projects (such as marine pile driving) are included. Construction projects involving water resources (e.g., dredging and land drainage), development of marine facilities, and open space recreational construction projects (e.g., parks and trails) are included in this industry.



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