EPA is moving forward the multi-laboratory validation study of Draft Method 1633

Essentially, the posting of this document appears to provide regulatory approval for NPDES permit writers to require the use of this method without first going through formal rulemaking and promulgation. This approach is divergent of US EPA’s normal policy of only using methods that have undergone the rigors of multi-laboratory validation. Yes, US EPA-validated and approved methods are desperately needed given the hysteria around PFAS in the environment, but endorsing use of a draft, single-laboratory validation method seems counterproductive.

For more information, check out this post @Environmental Standards

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