EPA Releases Framework for Addressing New PFAS and New Uses Under TSCA

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EPA has released the Framework for Addressing New PFAS and New Uses of PFAS. This document details the Agency’s planned strategy for evaluating Premanufacture Notices  (“PMNs”) for new PFAS compounds and Significant New Use Notices (“SNUNs”) for “new uses” of existing PFAS to ensure they do not pose harm to human health and the environment.

The Agency states that new PFAS substances present challenges for regulators, as there is frequently limited information available to assess their potential risks accurately. Many PFAS compounds are known to persist in the environment, bioaccumulate, and be toxic (known as “PBT”); the framework aims to qualitatively evaluate PFAS based on how likely they truly are to become PBTs in the body and environment.

The framework distinguishes between PFAS uses that may result in environmental releases and potential exposures and those that don’t. For example, PFAS applications that are deemed to have negligible exposure and minimal environmental release, such as in the closed systems used in the manufacture of electronics. EPA generally anticipates allowing the compounds to enter commerce after exposure data is provided.

The framework calls for more comprehensive testing, including toxicokinetic data, for PBT PFAS compounds that are expected to have a low but greater than negligible potential for environmental release and exposure. If initial testing raises concerns about exposure levels and risks, EPA will mandate further testing and risk mitigation before permitting manufacturing. This comprehensive testing would encompass physical-chemical properties, toxicity, and fate analysis. For example, uses of PFAS in spray-applied stain guards inherently involve releases into the environment. If required testing finds potential hazards, EPA has the authority under TSCA section 5 to demand additional testing and risk mitigation strategies or prohibit manufacturing entirely.

If EPA determines a new chemical substance poses an unreasonable risk, lacks sufficient risk information, or involves substantial production with potential exposure, it must issue a section 5(e) order for human health and environmental protection, which may include testing requirements. If PFAS data suggests it’s a PBT chemical and EPA anticipates exposures, the substance or significant new use could be deemed to present an unreasonable risk, therefore requiring either a section 5(f) order or an immediately effective proposed rule under TSCA section 6(a). The section 5(f) order applies to the submitter, while the 6(a) rule covers all users. For a SNUN, the 6(a) rule typically targets the specified new use. The chart below further details the possible EPA determinations and related actions following their review.

Determination Related Action
In the absence of sufficient information to permit a reasoned evaluation of risk from the substance or significant new use, the substance or significant new use may present an unreasonable risk. EPA must issue an order under TSCA section 5(e).
There is insufficient information to permit a reasoned evaluation of risk from the substance or new use. EPA must issue an order under TSCA section 5(e).
The substance or significant new use presents an unreasonable risk. EPA must take action under TSCA section 5(f).
The substance is or will be produced in substantial quantities, and there may be significant or substantial human and/or environmental exposure (exposure-based). EPA must issue an order under TSCA section 5(e).
The substance or significant new use is not likely to present an unreasonable risk. EPA notifies the submitter of its decision and publishes its findings in the Federal Register.