Sector 56: Administrative and Support and Waste Management and Remediation Services NAICS 561100 - Office Administrative Services NAICS 561200 - Facilities Support Services NAICS 561300 - Employment Services NAICS 561400 - Business Support Services NAICS 561500 - Travel Arrangement and Reservation Services NAICS 561600 - Investigation and Security Services NAICS 561700 - Services to Buildings and Dwellings NAICS 561900 - Other Support Services NAICS 562100 - Waste Collection NAICS 562200 - Waste Treatment and Disposal NAICS 562900 - Remediation and Other Waste Management Services