NAICS + PSC page

NAICS 541620 and PSC R425 contractors

Environmental Consulting Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 541620 + PSC R425
Last updated: April 8, 2026

Visible recipients

16

Mapped obligations

$4,068,994,675

State overlap

0

Top recipients

Visible recipients in the NAICS 541620 and PSC R425 overlap

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.

$17,951,847

Management Concepts, INC

Tysons Corner, VA

Management Concepts, INC is a federal category business profile based in Tysons Corner, VA. The current public data layer shows $8,860,736 in visible federal obligations across 152 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541512 (Computer Systems Design Services). The profile also shows meaningful product and service activity in PSC D318.

$374,882,586

Advanced Technologies And Laboratories (atl) International, Inc.

Gaithersburg, MD

Advanced Technologies And Laboratories (atl) International, Inc. is a federal asian pacific american owned business profile based in Gaithersburg, MD. The current public data layer shows $7,100,166 in visible federal obligations across 36 awards or transactions. Department of Energy 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 M300.

$8,380,020

Icf Incorporated

Fairfax, VA

Icf Incorporated is a federal government profile based in Fairfax, VA. The current public data layer shows $5,505,384 in visible federal obligations across 5 awards or transactions. Department of Health and Human Services appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541611 (Administrative Management and General Management Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$608,816,227

Trc Companies, Inc.

Windsor, CT

Trc Companies, Inc. is a federal category business profile based in Windsor, CT. The current public data layer shows $545,435 in visible federal obligations across 4 awards or transactions. Environmental Protection Agency appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541380 (Testing Laboratories and Services). The profile also shows meaningful product and service activity in PSC R425.

$531,114

Integral Consulting Inc.

Boulder, CO

Integral Consulting Inc. is a federal category business profile based in Boulder, CO. The current public data layer shows $218,454 in visible federal obligations across 9 awards or transactions. Department of Energy appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541620 (Environmental Consulting Services). The profile also shows meaningful product and service activity in PSC F105.

$1,305,946
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