Subpart X. Subpart X—Secondary Precious Metals Subcategory

• § 421.260 - Applicability: Description of the secondary precious metals subcategory.
• § 421.261 - Specialized definitions.
• § 421.262 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
• § 421.263 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
• § 421.264 - Standards of performance for new sources.
• § 421.265 - Pretreatment standards for existing sources.
• § 421.266 - Pretreatment standards for new sources.
• § 421.267 - [Reserved]