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Department of the Interior NAICS 541715 and PSC R499 contractors

Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology). SUPPORT- PROFESSIONAL: OTHER. 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 541715 · PSC R499
Last updated: April 3, 2026

Visible recipients

5

Mapped obligations

$9,877,890,285

State overlap

2

Top recipients

Visible recipients in the Department of the Interior overlap of NAICS 541715 and PSC R499

Caci, Inc. - Federal

Chantilly, VA

Caci, Inc. - Federal is a federal category business profile based in Chantilly, VA. The current public data layer shows $3,203,901,382 in visible federal obligations across 1,150 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.

$2,694,984,584

Kbr Wyle Services, LLC

Fulton, MD

Kbr Wyle Services, LLC is a federal category business profile based in Fulton, MD. The current public data layer shows $869,038,536 in visible federal obligations across 644 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541712 (Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)). The profile also shows meaningful product and service activity in PSC AZ12.

$6,056,704,110

Systems Planning And Analysis, Inc.

Alexandria, VA

Systems Planning And Analysis, Inc. is a federal category business profile based in Alexandria, VA. The current public data layer shows $305,176,232 in visible federal obligations across 242 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.

$733,398,831

Mantech Srs Technologies, Inc.

Herndon, VA

Mantech Srs Technologies, Inc. is a federal category business profile based in Herndon, VA. The current public data layer shows $74,933,149 in visible federal obligations across 78 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.

$392,179,999

Southland Industries

Sterling, VA

Southland Industries is a federal category business profile based in Sterling, VA. The current public data layer shows $4,836,806 in visible federal obligations across 15 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.

$622,761