Subpart L - SECONDARY SILVER SUBCATEGORY
- Section 421.120 - Applicability: Description of the secondary silver subcategory
- Section 421.121 - Specialized definitions
- Section 421.122 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available
- Section 421.123 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable
- Section 421.124 - Standards of performance for new sources
- Section 421.125 - Pretreatment standards for existing sources
- Section 421.126 - Pretreatment standards for new sources
- Section 421.127 - Reserved