Subpart Q. Subpart Q—Secondary Indium Subcategory
- § 421.190 - Applicability: Description of the secondary indium subcategory.
- § 421.191 - Specialized definitions.
- §§ 421.192-421.193 - §[Reserved]
- § 421.194 - Standards of performance for new sources.
- § 421.195 - Pretreatment standards for existing sources.
- § 421.196 - Pretreatment standards for new sources.
- § 421.197 - [Reserved]