Subpart W. Subpart W—Primary Precious Metals and Mercury Subcategory
- § 421.250 - Applicability: Description of the primary precious metals and mercury subcategory.
- § 421.251 - Specialized definitions.
- § 421.252 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- § 421.253 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- § 421.254 - Standards of performance for new sources.
- § 421.255 - [Reserved]
- § 421.256 - Pretreatment standards for new sources.
- § 421.257 - [Reserved]