| NAICS | Primary | Description | 
| 115310 |  | Support Activities for Forestry | 
| 221310 |  | Water Supply and Irrigation Systems | 
| 238910 | Yes | Site Preparation Contractors | 
| 238990 |  | All Other Specialty Trade Contractors | 
| 423310 |  | Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers | 
| 423390 |  | Other Construction Material Merchant Wholesalers | 
| 423440 |  | Other Commercial Equipment Merchant Wholesalers | 
| 423490 |  | Other Professional Equipment and Supplies Merchant Wholesalers | 
| 423510 |  | Metal Service Centers and Other Metal Merchant Wholesalers | 
| 423710 |  | Hardware Merchant Wholesalers | 
| 423720 |  | Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers | 
| 423840 |  | Industrial Supplies Merchant Wholesalers | 
| 423850 |  | Service Establishment Equipment and Supplies Merchant Wholesalers | 
| 423990 |  | Other Miscellaneous Durable Goods Merchant Wholesalers | 
| 424990 |  | Other Miscellaneous Nondurable Goods Merchant Wholesalers | 
| 425120 |  | Wholesale Trade Agents and Brokers | 
| 444190 |  | Other Building Material Dealers | 
| 488490 |  | Other Support Activities for Road Transportation | 
| 532412 |  | Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing | 
| 532490 |  | Other Commercial and Industrial Machinery and Equipment Rental and Leasing | 
| 541620 |  | Environmental Consulting Services | 
| 561210 |  | Facilities Support Services | 
| 561720 |  | Janitorial Services | 
| 561990 |  | All Other Support Services | 
| 562111 |  | Solid Waste Collection | 
| 562119 |  | Other Waste Collection | 
| 562219 |  | Other Nonhazardous Waste Treatment and Disposal | 
| 562910 |  | Remediation Services | 
| 562991 |  | Septic Tank and Related Services | 
| 562998 |  | All Other Miscellaneous Waste Management Services | 
| 624230 |  | Emergency and Other Relief Services | 
| 722310 |  | Food Service Contractors |