EPA has sent its proposed TSCA rule governing the solvent n-methylpyrrolidone (NMP) to the White House Office of Management and Budget (OMB), likely teeing up renewed battles over the Trump-era risk evaluation and any workplace exposure limit based on it, after industry groups asked the agency to rewrite the review over alleged scientific errors.
November 15, 2026
Maria Hegstad
Maria Hegstad is managing editor of Inside EPA’s Risk Policy Report, where she has been writing about all things chemicals, risk assessment policy and toxicology since 2008. Before joining Inside EPA, Maria reported for local newspapers in Manassas, VA, and D.C., covering courts and local government. Maria is a proud native of the “other” Washington, raised in Tacoma. She earned her BA from the College of William & Mary and her MSJ from Medill.
Archived Articles
In an early sign of how EPA will defend its TSCA proposal phasing out uses of trichloroethylene (TCE), the agency is arguing in supporting documents that less-stringent alternatives backed by industry groups would be impractical -- including a statement that the rule’s short-term worker protections are not “feasible” over the long term.
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EPA’s proposed TSCA rule for trichloroethylene (TCE) avoids taking a definitive stance on the long-simmering debate over contested research linking it to fetal heart defects, proposing a worker exposure limit based on that effect but also a less-stringent alternative that uses other effects, though even that option is much tougher than OSHA’s limits.
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The American Chemistry Council (ACC) is asking a federal court to formally bar EPA from using the National Academy of Sciences, Engineering and Medicine’s (NASEM) contested peer review of the agency’s draft formaldehyde risk assessment in any of a litany of applications, including as support for strict workplace exposure limits under TSCA.
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Nine trade groups are asking EPA to initiate a pre-proposal small-business review of its hotly anticipated formaldehyde rule even before finishing the risk evaluation the policy will be based on, saying that unusual step would help ensure small employers are aware of the rulemaking process and can prepare for -- or help avert -- strict new workplace limits.
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OSHA has sent a long-pending final rule to update its chemical hazard communications standard (HCS) for White House review, after industry groups warned the proposed version would require them to gather a “vast” amount of new information on such substances -- and even support more stringent policies from other agencies.
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The White House Office of Management and Budget (OMB) has completed its review of EPA’s proposal to regulate trichloroethylene (TCE), setting the stage for renewed debate on which of two potential workplace exposure limits the agency should apply after a years-long clash over the solvent’s potential links to fetal heart defects.
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Major unions are asking EPA to reconsider its proposed TSCA rule that would allow employers to continue active uses of carbon tetrachloride (CTC) with stricter worker protections, arguing both that the agency has overlooked some applications of the solvent entirely and that it should ban those where it “lacks evidence” firms can meet a strict exposure limit.
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Trade groups and companies say EPA’s proposed TSCA rule for carbon tetrachloride (CTC) rests on an illegally strict workplace exposure limit, and improperly cuts OSHA out of the rulemaking process despite a statutory mandate to consult with peer agencies before treading into areas they regulate, among a host of other attacks.
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Trade groups and individual companies are starting to raise concerns on EPA’s draft supplement to the Trump-era TSCA evaluation of 1,4-dioxide, in particular an occupational exposure limit the agency quietly floated in early August, arguing in early comments that it may not be feasible along with several other broad concerns for the new review.
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