CFR > Title 40 > Chapter I > Subchapter N > Part 454 > Subpart A CFR > Title 40 > Chapter I > Subchapter N > Part 454 > Subpart A – Char and Charcoal Briquets Subcategory Current as of: 2024 | Check for updates | Other versions § 454.10 Applicability; description of the manufacture of char and charcoal briquets subcategory § 454.11 Specialized definitions § 454.12 Effluent limitations and guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available