1 At the time of writing this document, Method 1633 is in the 4th Draft Phase with the final version expected to be released at the end of 2023.2 By the final release of EPA 1633, it will have been multi-lab validated fo...
and establish a "grandfather" provision for permit applications if a draft permit or preliminary determination has been issued for public comment by the date the revised PM NAAQS go into effect. In addition to the CAA requirement for states to submit implementation plans, EPA acts to control NAAQ...
US EPA Method 1633 was first introduced in August 2021 to become the foundation method for analysis of PFAS in non-potable water matrices, soils, biosolids, and tissues.1 At the time of the writing of this document, ...