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

Clean Harbors Environmental Services INC

Norwell, MA

Clean Harbors Environmental Services INC is a federal category business profile based in Norwell, MA. The current public data layer shows $20,527,027 in visible federal obligations across 1,632 awards or transactions. Department of Agriculture 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 R706.

$39,681,717

Ahtna Professional Services, Inc.

Anchorage, AK

Ahtna Professional Services, Inc. is a federal 8a program participant profile based in Anchorage, AK. The current public data layer shows $17,309,386 in visible federal obligations across 23 awards or transactions. Department of Homeland Security appears as the strongest visible awarding agency. Top industry concentration is in NAICS 561612 (Security Guards and Patrol Services). The profile also shows meaningful product and service activity in PSC S206.

$0

Feditc, LLC

Rockville, MD

Feditc, LLC is a federal asian pacific american owned business profile based in Rockville, MD. The current public data layer shows $16,143,798 in visible federal obligations across 50 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 R425.

$84,007,895

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.

$43,137,052

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.

$1,856,427

Atkins North America, Inc.

Dallas, TX

Atkins North America, Inc. is a federal category business profile based in Dallas, TX. The current public data layer shows $732,372 in visible federal obligations across 8 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.

$4,536,281

Halff Associates, Inc.

Richardson, TX

Halff Associates, Inc. is a federal category business profile based in Richardson, TX. The current public data layer shows $247,820 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 C1JZ.

$0
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