California Air Resources Board (CARB) Enforcement staff (staff) completed a full railyard inspection/audit at the Burlington Northern Santa Fe (BNSF)/Union Pacific (UP) railyards. This audit was conducted to help address community concerns brought up at the Southeast Los Angeles (SELA) Community Steering Committee (CSC) meeting in Fall 2021 regarding compliance at the railyards in the East Los Angeles railyard area that also borders the East Los Angeles – Boyle Heights – West Commerce (ELABHWC) AB 617 community. CARB used railyard reporting data from BNSF to determine drayage trucks compliance with both the engine performance standard and reporting, verified compliance with engine performance standards for cargo handling equipment (CHE), inspected transportation refrigeration units (TRUs) on trailers and trains, and used the Portable Emissions Acquisition System (PEAQS) to screen for high emitting trucks.