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Department of the Interior NAICS 541620 and PSC F108 contractors

Environmental Consulting Services. ENVIRONMENTAL SYSTEMS PROTECTION- ENVIRONMENTAL REMEDIATION. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of the Interior.

Department of the Interior · NAICS 541620 · PSC F108
Last updated: April 8, 2026

Visible recipients

4

Mapped obligations

$1,442,017,161

State overlap

3

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541620 and PSC F108

Tetra Tech Ec, Inc.

San Diego, CA

Tetra Tech Ec, Inc. is a federal category business profile based in San Diego, CA. The current public data layer shows $418,648,162 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 562910 (Remediation Services). The profile also shows meaningful product and service activity in PSC F108.

$724,348,133

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

Hunt Valley, MD

Ea Engineering, Science, And Technology, Inc., Pbc is a federal category business profile based in Hunt Valley, MD. The current public data layer shows $92,540,844 in visible federal obligations across 522 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 562910 (Remediation Services). The profile also shows meaningful product and service activity in PSC F999.

$600,957,670

Ahtna Global LLC

Anchorage, AK

Ahtna Global LLC is a federal 8a program participant profile based in Anchorage, AK. The current public data layer shows $24,004,773 in visible federal obligations across 94 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 562910 (Remediation Services). The profile also shows meaningful product and service activity in PSC F108.

$74,084,286

Ahtna Solutions, LLC

Anchorage, AK

Ahtna Solutions, LLC is a federal 8a program participant profile based in Anchorage, AK. The current public data layer shows $14,194,644 in visible federal obligations across 62 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 562910 (Remediation Services). The profile also shows meaningful product and service activity in PSC F108.

$42,627,072