U.S. Code
Regulations
Constitution
Sort by Rank
Titles Ascending
Titles Descending
10 per page
25 Result/page
50 Result/page
x
Search
Search guide
U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 40
Chapter I
Part 421
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]
Download the GovRegs app!
