Services under OASIS Pool 1 include a broad spectrum of engineering, environmental, and management consulting services awarded under the North American Industry Classification System (NAICS) codes listed below.

CODE	NAICS TITLE
541330	Engineering Services
541360	Geophysical Surveying and Mapping Services
541370	Surveying And Mapping (Except Geophysical) Services
541380	Testing Laboratories
541611	Administrative Management and General Management Consulting Services
541612	Human Resources Consulting Services (2007), Human Resources and Executive
	Search Consulting Services (2002)
541613	Marketing Consulting Services
541614	Process, Physical Distribution, and Logistics Consulting Services
541618	Other Management Consulting Services
541620	Environmental Consulting Services
541690	Other Scientific and Technical Consulting Services
541810	Advertising Agencies
541820	Public Relations Agencies
541830	Media Buying Agencies
541840	Media Representatives
541850	Outdoor Advertising
541860	Direct Mail Advertising
541870	Advertising Material Distribution Services
541890	Other Services Related to Advertising
541910	Marketing Research and Public Opinion Polling
541990	All Other Professional, Scientific, and Technical Services

Tetra Tech OASIS Capabilities