PPG Industries withdrew its petition to amend the U.S. Environmental Protection Agency's (EPA) December 2024 final risk management rule for trichloroethylene (TCE). The petition, submitted on March 24, 2025, sought an amendment to the exemption for the industrial and commercial use of TCE as a processing aid for specialty polymeric microporous sheet materials manufacturing.
PPG's original request aimed to allow the company to meet an interim existing chemical exposure limit (ECEL) of five parts per million (ppm) and an action level of 2.5 ppm. The EPA confirmed the withdrawal of the petition on June 11, 2025, and now considers the petition closed.
This withdrawal indicates that PPG will not pursue the requested amendment to the TCE risk management rule at this time. The implications for PPG's manufacturing processes involving specialty polymeric microporous sheet materials will depend on the company's ability to comply with the existing EPA rule without the requested amendment.
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