CFR > Title 40 > Chapter I > Subchapter N > Part 429 > Subpart A CFR > Title 40 > Chapter I > Subchapter N > Part 429 > Subpart A – Barking Subcategory Current as of: 2024 | Check for updates | Other versions § 429.20 Applicability; description of the barking subcategory § 429.21 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT) § 429.24 New source performance standards (NSPS) § 429.25 Pretreatment standards for existing sources (PSES) § 429.26 Pretreatment standards for new sources (PSNS)