CFR > Title 40 > Chapter I > Subchapter N > Part 449 > Subpart A CFR > Title 40 > Chapter I > Subchapter N > Part 449 > Subpart A – Airport Deicing Category Current as of: 2024 | Check for updates | Other versions § 449.1 Applicability § 449.2 General definitions § 449.10 v2 Effluent limitations representing the best available technology economically achievable (BAT) § 449.11 New source performance standards (NSPS) § 449.20 v2 Monitoring, reporting and recordkeeping requirements