Subpart U—Primary Nickel and Cobalt Subcategory
- §421.230 Applicability: Description of the primary nickel and cobalt subcategory.
- §421.231 Specialized definitions.
- §421.232 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.
- §421.233 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
- §421.234 Standards of performance for new sources.
- §421.235 [Reserved]
- §421.236 Pretreatment standards for new sources.
- §421.237 [Reserved]