This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
488310 – Port and Harbor Operations
221310 – Water Supply and Irrigation Systems
922190 – Other Justice, Public Order, and Safety Activities
562998 – All Other Miscellaneous Waste Management Services
236220 – Commercial and Institutional Building Construction