SUBPART N—Primary Antimony Subcategory (§421.140 to §421.147)
- 421.140—Applicability: Description of the primary antimony subcategory.
- 421.141—Specialized definitions.
- 421.142—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- 421.143—Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- 421.144—Standards of performance for new sources.
- 421.146—Pretreatment standards for new sources.