SOCMA Seeks RCRA Guide To Clarify ‘Manufacturing Process Unit’ Waiver

The Society of Chemical Manufacturers and Associates (SOCMA) is pressing EPA for guidance clarifying how a Clean Air Act definition of “chemical manufacturing process unit (MPU)” applies to a Resource Conservation and Recovery Act (RCRA) exclusion that uses the same term without defining it -- an issue the group says is rarely invoked but took on new prominence in a 2022 enforcement case. “SOCMA is advocating for a public guidance document from EPA which states that, for purposes of the...