40 CFR Subpart I - Subpart I—Metallurgical Acid Plants Subcategory
- § 421.90 Applicability: Description of the metallurgical acid plants subcategory.
- § 421.91 Specialized definitions.
- § 421.92 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- § 421.93 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- § 421.94 Standards of performance for new sources.
- § 421.95 Pretreatment standards for existing sources.
- § 421.96 Pretreatment standards for new sources.
- § 421.97 [Reserved]