The US EPA and state agencies have been adding PFAS compliance testing to various permits such as NPDES and landfill monitoring programs. Test methods utilized for permitting are prescriptive and can be costly such as EPA 1633. However, for investigative purposes (and many other project-specific objectives), a more cost-effective method with a faster turnaround time is available. This method is ASTM D8421/D8535, which can also be cited as EPA 8327.
Currently, the Department of Defense (DoD) as well as several state agencies offer accreditation for these methods and are actively using it as a tool in DoD's PFAS remedial investigation program. Lastly and possibly most notably is that US EPA has formally included ASTM D8421 in the Proposed Methods Update Rule (MUR) 22 (December 2024). Once promulgated, ASTM D8421 (along with EPA 1633 and EPA 1621) will be included in Title 40, Part 136 of the Code of Federal Regulations (CFR), thus allowing its use for Clean Water Act (CWA) compliance.
In this presentation we will examine the specifics of ASTM D8421 & 8535/EPA 8327 and compare side by side comparison data to that of EPA 1633 augmented by case studies.
