CFR › Title 40 › Part 449Part 449 — Airport Deicing Point Source CategorySubpart A — Airport Deicing Category§ 449.1— Applicability.§ 449.2— General definitions.§ 449.10— Effluent limitations representing the best available technology economically achievable (BAT).§ 449.11— New source performance standards (NSPS).§ 449.20— Monitoring, reporting and recordkeeping requirements.