Agency + NAICS page

Department of Homeland Security NAICS 541620 contractors

Environmental Consulting Services. Use this buyer-scoped industry page to see which visible contractors sit closest to this NAICS lane under Department of Homeland Security.

Agency: Department of Homeland Security
Last updated: April 8, 2026

Visible recipients

17

Mapped obligations

$1,582,033,012

Top PSC links

4

Top recipients

Visible recipients tied to Department of Homeland Security and NAICS 541620

Weston Solutions INC

West Chester, PA

Weston Solutions INC is a federal category business profile based in West Chester, PA. The current public data layer shows $169,108,559 in visible federal obligations across 378 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Z2JZ.

$531,028,453

Resource Management Concepts, Inc.

Lexington Park, MD

Resource Management Concepts, Inc. is a federal category business profile based in Lexington Park, MD. The current public data layer shows $116,743,780 in visible federal obligations across 153 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC R425.

$43,137,052

Src INC

Syracuse, NY

Src INC is a federal category business profile based in Syracuse, NY. The current public data layer shows $104,656,859 in visible federal obligations across 271 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 334511 (Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing). The profile also shows meaningful product and service activity in PSC R425.

$274,130,666

Nv5 Geospatial, Inc.

Saint Petersburg, FL

Nv5 Geospatial, Inc. is a federal category business profile based in Saint Petersburg, FL. The current public data layer shows $90,434,064 in visible federal obligations across 132 awards or transactions. Department of the Interior appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541360 (Geophysical Surveying and Mapping Services). The profile also shows meaningful product and service activity in PSC C219.

$17,872,558

Wsp USA Environment & Infrastructure Inc.

Blue Bell, PA

Wsp USA Environment & Infrastructure Inc. is a federal category business profile based in Blue Bell, PA. The current public data layer shows $75,668,109 in visible federal obligations across 309 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Z2NA.

$165,926,652

Hdr Environmental, Operations And Construction, Inc.

Englewood, CO

Hdr Environmental, Operations And Construction, Inc. is a federal category business profile based in Englewood, CO. The current public data layer shows $59,678,442 in visible federal obligations across 109 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC C211.

$62,574,472

Redhorse Corporation

Arlington, VA

Redhorse Corporation is a federal category business profile based in Arlington, VA. The current public data layer shows $30,311,976 in visible federal obligations across 101 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 611430 (Professional and Management Development Training). The profile also shows meaningful product and service activity in PSC R499.

$23,825,026

Arcadis U.s., Inc.

Highlands Ranch, CO

Arcadis U.s., Inc. is a federal category business profile based in Highlands Ranch, CO. The current public data layer shows $28,235,915 in visible federal obligations across 100 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC F999.

$31,756,418

The Cadmus Group LLC

Arlington, VA

The Cadmus Group LLC is a federal category business profile based in Arlington, VA. The current public data layer shows $26,069,830 in visible federal obligations across 289 awards or transactions. Environmental Protection Agency 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 R499.

$257,698,086

Michael Baker International Holdco Corporation

Moon Township, PA

Michael Baker International Holdco Corporation is a federal category business profile based in Moon Township, PA. The current public data layer shows $23,540,961 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 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC C219.

$864,257
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