Engineering ServicesGeneral $22.50m Small Business Size Standard: [Yes]Special $41.50m Military and Aerospace Equipment and Military Weapons: [Yes]Special $41.50m Contracts and Subcontracts for Engineering Services Awarded Under the National Energy Policy Act of 1992: [Yes]Special $41.50m Marine Engineering and Naval Architecture: [Yes] (4)

Electrical Contractors and Other Wiring Installation Contractors

Plumbing, Heating, and Air?Conditioning Contractors

All Other Specialty Trade ContractorsGeneral $16.50m Small Business Size Standard: [Yes]Special $16.50m Building and Property Specialty Trade Services: [Yes] (4)

Surveying and Mapping (except Geophysical) Services

Administrative Management and General Management Consulting Services

Other Scientific and Technical Consulting Services

Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) General 1000 Employees Small Business Size Standard: [Yes]Special 1500 Employees Aircraft, Aircraft Engine and Engine Parts: [Yes]Special 1250 Employees Other Aircraft Parts and Auxiliary Equipment: [Yes]Special 1250 Employees Guided Missiles and Space Vehicles, Their Propulsion Units and Propulsion Parts: [Yes] (4)

Research and Development in the Social Sciences and Humanities

All Other Professional, Scientific and Technical Services

Remediation ServicesGeneral $22.00m Small Business Size Standard: [Yes]Special 750 Employees Environmental Remediation Services: [Yes]

Code	Description	Primary
541330	Engineering ServicesGeneral $22.50m Small Business Size Standard: [Yes]Special $41.50m Military and Aerospace Equipment and Military Weapons: [Yes]Special $41.50m Contracts and Subcontracts for Engineering Services Awarded Under the National Energy Policy Act of 1992: [Yes]Special $41.50m Marine Engineering and Naval Architecture: [Yes] (4)
238210	Electrical Contractors and Other Wiring Installation Contractors
238220	Plumbing, Heating, and Air?Conditioning Contractors

STELL SIA SALAS O'BRIEN LLC

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