Department of Defense NAICS 541620 contractors

Environmental Consulting Services. Contractors in this NAICS lane under Department of Defense.

Agency: Department of Defense

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$3,729,878,400

Visible recipients tied to Department of Defense and NAICS 541620

Clean Harbors Environmental Services INC

Norwell, MA

Norwell, MA | 1,632 awards | Top agency Department of Agriculture | NAICS 562910

$39,681,717

Aecom International Inc.

Frankfurt Am Main

Frankfurt Am Main | 104 awards | Top agency Department of Defense | NAICS 541330

$13,173,873

Power Engineers INC

Hailey, ID

Hailey, ID | 19 awards | Top agency Department of Defense | NAICS 541330

$366,264

Ahtna Professional Services, Inc.

Anchorage, AK

Anchorage, AK | 23 awards | Top agency Department of Homeland Security | NAICS 561612

Osage Nation Energy Services LLC

Tulsa, OK

Tulsa, OK | 17 awards | Top agency Department of Defense | NAICS 562910

$10,150,385

Paragon Technical Services, Inc.

Hilliard, OH

Hilliard, OH | 16 awards | Top agency Department of Energy | NAICS 561612

$29,333,766

Feditc, LLC

Rockville, MD

Rockville, MD | 50 awards | Top agency Department of Defense | NAICS 541512

$84,007,895

Ahtna Solutions, LLC

Anchorage, AK

Anchorage, AK | 62 awards | Top agency Department of Defense | NAICS 562910

$14,327,409

Hdr, INC

Omaha, NE

Omaha, NE | 5 awards | Top agency Department of Veterans Affairs | NAICS 541310

$8,720

Management Concepts, INC

Tysons Corner, VA

Tysons Corner, VA | 152 awards | Top agency Department of Defense | NAICS 541512

$43,137,052

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