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NAICS 541620 and PSC C211 contractors

Environmental Consulting Services. ARCHITECT AND ENGINEERING- GENERAL: LANDSCAPING, INTERIOR LAYOUT, AND DESIGNING. Cross-code contractor overlap.

NAICS 541620 + PSC C211

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$3,766,619,781

State overlap

Top recipients

Visible recipients in the NAICS 541620 and PSC C211 overlap

Stantec Consulting Services Inc.

Denver, CO

Denver, CO | 138 awards | Top agency Department of Defense | NAICS 541330

$327,231,033

Aecom International Inc.

Frankfurt Am Main

Frankfurt Am Main | 104 awards | Top agency Department of Defense | NAICS 541330

$55,455,386

Power Engineers INC

Hailey, ID

Hailey, ID | 19 awards | Top agency Department of Defense | NAICS 541330

$11,269,023

Osage Nation Energy Services LLC

Tulsa, OK

Tulsa, OK | 17 awards | Top agency Department of Defense | NAICS 562910

$17,823,698

Hdr, INC

Omaha, NE

Omaha, NE | 5 awards | Top agency Department of Veterans Affairs | NAICS 541310

$1,823,045

Geosyntec Consultants, Inc.

Boca Raton, FL

Boca Raton, FL | 48 awards | Top agency Department of Defense | NAICS 541620

$47,251,879

Brown And Caldwell

San Diego, CA

San Diego, CA | 5 awards | Top agency Department of Defense | NAICS 541330

$6,841,853

Atkins North America, Inc.

Dallas, TX

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

$83,370,030

Rs&h, Inc.

Merritt Island, FL

Merritt Island, FL | 21 awards | Top agency National Aeronautics and Space Administration | NAICS 541310

$67,285,455

Smithgroup Michigan Incorporated

Detroit, MI

Detroit, MI | 5 awards | Top agency Department of the Interior | NAICS 541310

$14,265

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