EPA OTAQ updates BABA Implementation Procedures (FAQ memo) for OTAQ federal financial assistance programs

EPA’s Office of Transportation and Air Quality (OTAQ) issued an updated BABA Implementation Procedures document (FAQ/memo format) for OTAQ federal financial assistance programs (including DERA, Clean School Bus, Clean Ports, and Clean Heavy-Duty Vehicles). The update provides program-specific interpretive guidance on BABA applicability and scope (including Purpose-Time-Place concepts), covered product category definitions (iron/steel vs. manufactured products vs. construction materials), compliance documentation/recordkeeping expectations, and waiver usage pathways. The memo includes clarifications relevant to infrastructure vs. rolling stock/equipment (e.g., it states BABA applies to clean/zero-emission school bus infrastructure but not to the bus itself), supporting recipient/contractor specification writing and audit readiness.