New PFAS Analytical Method

The United States Environmental Protection Agency (EPA) recently released its draft Method 1633 to test for 40 PFAS in eight different media including non-potable water, soil, other solids and tissue. The method was developed in partnership with Department of Defense (DoD) and has undergone single-laboratory study, but is not finalized, with the multi-laboratory validation expected to be completed sometime in 2022.

Method 1633 is EPA’s first draft method to test PFAS in soil, biosolids, tissue, groundwater, surface water and wastewater. GSI’s opinion is that this is a complex method, with multiple steps depending upon the matrix; however, the draft method is quite robust and very detailed. We recommend that our clients start folding this method into environmental projects, as appropriate.

Learn more about what this mean for environmental investigations and sampling projects here.