NAICS 561990 and PSC R499 contractors in Washington

All Other Support Services. SUPPORT- PROFESSIONAL: OTHER. Cross-code overlap in Washington.

Washington · NAICS 561990 · PSC R499

Last updated: April 17, 2026

Visible recipients

Mapped obligations

$15,416,172

Buyer overlap

Top recipients

Visible recipients in the Washington overlap of NAICS 561990 and PSC R499

Quinault Indian Nation

Taholah, WA

Taholah, WA | 122 awards | Top agency Department of the Interior | NAICS 221320

Hoh Indian Tribe

Forks, WA

Forks, WA | 56 awards | Top agency Department of the Interior | NAICS 541990

Sealaska Remediation Solutions, LLC

Seattle, WA

Seattle, WA | 20 awards | Top agency Department of Defense | NAICS 561990

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