U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 04, 2022

§ 471.90 - Applicability; description of the zirconium-hafnium forming subcategory.

This subpart applies to discharges of pollutants to waters of the United States, and introductions of pollutants into publicly owned treatment works from the process operations of the zirconium-hafnium forming subcategory.