CFR > Title 40 > Chapter I > Subchapter N > Part 436 > Subpart K CFR > Title 40 > Chapter I > Subchapter N > Part 436 > Subpart K – Fluorspar Subcategory Current as of: 2024 | Check for updates | Other versions § 436.110 Applicability; description of the fluorspar subcategory § 436.111 Specialized definitions § 436.112 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available