Department of Homeland Security NAICS 541620 and PSC C211 contractors

Environmental Consulting Services. ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING. Cross-code overlap under Department of Homeland Security.

Department of Homeland Security · NAICS 541620 · PSC C211

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$658,869,151

State overlap

Top recipients

Visible recipients in the Department of Homeland Security overlap of NAICS 541620 and PSC C211

Nv5 Geospatial, Inc.

Saint Petersburg, FL

Saint Petersburg, FL | 132 awards | Top agency Department of the Interior | NAICS 541360

$62,855,573

Hdr Environmental, Operations And Construction, Inc.

Englewood, CO

Englewood, CO | 109 awards | Top agency Department of Defense | NAICS 541330

$407,413,976

Arcadis U.s., Inc.

Highlands Ranch, CO

Highlands Ranch, CO | 100 awards | Top agency Department of Defense | NAICS 541330

$99,952,149

Atkins North America, Inc.

Dallas, TX

Dallas, TX | 8 awards | Top agency Department of Defense | NAICS 541330

$83,370,030

Halff Associates, Inc.

Richardson, TX

Richardson, TX | 5 awards | Top agency Department of Defense | NAICS 541330

$5,277,423

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