Department of the Interior PSC F108 contractors

ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION. Contractors in this PSC lane under Department of the Interior.

Agency: Department of the Interior

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$2,202,297,486

Visible recipients tied to Department of the Interior and PSC F108

Tetra Tech Ec, Inc.

San Diego, CA

San Diego, CA | 5 awards | Top agency Department of Defense | NAICS 562910

$699,540,023

Aptim Federal Services, LLC

Baton Rouge, LA

Baton Rouge, LA | 303 awards | Top agency Department of Defense | NAICS 562910

$393,735,320

Ea Engineering, Science, And Technology, Inc., Pbc

Hunt Valley, MD

Hunt Valley, MD | 522 awards | Top agency Department of Defense | NAICS 562910

$591,675,557

Sealaska Environmental Services, LLC

Juneau, AK

Juneau, AK | 20 awards | Top agency Department of Defense | NAICS 562910

$11,393,794

Relyant Global LLC

Maryville, TN

Maryville, TN | 66 awards | Top agency Department of Defense | NAICS 236220

$80,059,039

Osage Nation

Pawhuska, OK

Pawhuska, OK | 211 awards | Top agency Department of Health and Human Services | NAICS 562910

$1,808,346

Black & Veatch Corporation

Alpharetta, GA

Alpharetta, GA | 5 awards | Top agency Environmental Protection Agency | NAICS 541611

$32,301,941

Ahtna Global LLC

Anchorage, AK

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

$68,767,408

Osage Nation Energy Services LLC

Tulsa, OK

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

$1,808,346

Ahtna Solutions, LLC

Anchorage, AK

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

$28,299,663

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