Department of Defense NAICS 541620 and PSC F999 contractors

Environmental Consulting Services. OTHER ENVIRONMENTAL SERVICES. Cross-code overlap under Department of Defense.

Department of Defense · NAICS 541620 · PSC F999

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,993,180,162

State overlap

Top recipients

Visible recipients in the Department of Defense overlap of NAICS 541620 and PSC F999

Arcadis U.s., Inc.

Highlands Ranch, CO

Highlands Ranch, CO | 100 awards | Top agency Department of Defense | NAICS 541330

$378,825,502

Michael Baker International Holdco Corporation

Moon Township, PA

Moon Township, PA | 5 awards | Top agency Department of Defense | NAICS 541330

$2,493,048

Ahtna Global LLC

Anchorage, AK

Anchorage, AK | 92 awards | Top agency Department of Defense | NAICS 562910

$27,803,961

Stantec Consulting Services Inc.

Denver, CO

Denver, CO | 138 awards | Top agency Department of Defense | NAICS 541330

$260,983,707

Aecom International Inc.

Frankfurt Am Main

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

$24,821,898

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

$15,620,950

Ahtna Solutions, LLC

Anchorage, AK

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

$32,094,917

Brown And Caldwell

San Diego, CA

San Diego, CA | 5 awards | Top agency Department of Defense | NAICS 541330

$3,495,517

Aleut Remediation LLC

Oak Ridge, TN

Oak Ridge, TN | 20 awards | Top agency Department of Defense | NAICS 562910

$56,506,974

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