General Services Administration PSC F999 contractors

OTHER ENVIRONMENTAL SERVICES. Contractors in this PSC lane under General Services Administration.

Agency: General Services Administration

Last updated: April 13, 2026

Visible recipients

Mapped obligations

$2,103,295,191

Visible recipients tied to General Services Administration and PSC F999

Tetra Tech Ec, Inc.

San Diego, CA

San Diego, CA | 5 awards | Top agency Department of Defense | NAICS 562910

$215,451,342

Chenega Global Services LLC

San Antonio, TX

San Antonio, TX | 5 awards | Top agency Department of Defense | NAICS 562910

$81,275,559

Aecom Technical Services, Inc.

Los Angeles, CA

Los Angeles, CA | 1,077 awards | Top agency Department of Defense | NAICS 541330

$454,684,853

Ea Engineering, Science, And Technology, Inc., Pbc

Hunt Valley, MD

Hunt Valley, MD | 522 awards | Top agency Department of Defense | NAICS 562910

$600,988,011

Wsp USA Environment & Infrastructure Inc.

Blue Bell, PA

Blue Bell, PA | 309 awards | Top agency Department of Defense | NAICS 236220

$239,495,810

Calibre Systems INC

Alexandria, VA

Alexandria, VA | 125 awards | Top agency Department of Defense | NAICS 541990

$129,874,705

Navarro Research And Engineering, Inc.

Oak Ridge, TN

Oak Ridge, TN | 102 awards | Top agency Department of Energy | NAICS 562910

$323,341,736

Sealaska Environmental Services, LLC

Juneau, AK

Juneau, AK | 20 awards | Top agency Department of Defense | NAICS 562910

$54,544,148

Ahtna Professional Services, Inc.

Anchorage, AK

Anchorage, AK | 23 awards | Top agency Department of Homeland Security | NAICS 561612

Brown And Caldwell

San Diego, CA

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

$1,165,513

Page 1 of 21 2 Next

Agency profile

Loading buyer-level contractor and category paths