NAICS + PSC page

NAICS 541380 and PSC B502 contractors

Testing Laboratories and Services. SPECIAL STUDIES/ANALYSIS- AIR QUALITY. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 541380 + PSC B502

Last updated: April 7, 2026

Visible recipients

Mapped obligations

$280,288

State overlap

Top recipients

Visible recipients in the NAICS 541380 and PSC B502 overlap

Trc Companies, Inc.

Windsor, CT

Trc Companies, Inc. is a federal category business profile based in Windsor, CT. The current public data layer shows $545,435 in visible federal obligations across 4 awards or transactions. Environmental Protection Agency appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541380 (Testing Laboratories and Services). The profile also shows meaningful product and service activity in PSC R425.

$280,288