Chemical Safety

EPA is proposing new workplace exposure limits for the solvent perchloroethylene (PCE) in several sectors that would be over 100 times stricter than OSHA’s current standard, but would allow employers in some sectors to continue using it indefinitely, including those who use the chemical to manufacture alternatives to climate-warming refrigerants.

EPA is poised to propose its TSCA rule governing the solvent perchloroethylene (PCE or perc) after a draft version cleared White House review on June 1, an action that comes less than two months after the agency released its methylene chloride plan and could show how broadly it intends to apply that rule’s strict approach to worker protections.

Officials with the American Chemistry Council (ACC) say EPA failed to fully consider either less-burdensome alternatives to its proposed rule aimed at protecting workers from the toxic solvent methylene chloride or the true economic costs of a widespread phaseout, including the range of employers that could be forced to under a total ban.

EPA has submitted its proposed TSCA carbon tetrachloride (CCl4) rule to the White House Office of Management and Budget (OMB), teeing up renewed battles over industry groups’ bids to exempt “critical uses” of the solvent from restrictions, as well as arguments that the Trump-era risk evaluation used a deeply flawed approach to model workplace exposures.

A scientist at EPA’s TSCA office says the agency’s collection of data on worker safety and chemical exposures differs in scope and purpose from industrial hygienists and employers’ methods, offering more insight into the program’s assessment process just as it is floating its first set of workplace safety standards in a newly proposed rule for methylene chloride.

EPA chemicals chief Michal Freedhoff used the launch of the agency’s landmark TSCA risk-management proposal for methylene chloride to temper top officials’ prior statements that cast the rule and its worker-protection standards as a model for future chemical regulations under the law, saying key elements of the draft rest on case-specific factors.

EPA’s newly proposed TSCA rule for methylene chloride would require a quick phaseout of most uses of the solvent but allows others to continue under a strict workplace exposure limit with monitoring and protective-gear mandates based on OSHA standards -- a line the agency’s chemicals chief says her office drew based on its “trust” in those sectors to adopt its safeguards.

The Department of Homeland Security (DHS) is floating a draft plan to overhaul its years-old chemical security program, seeking to break from EPA methods that were the basis for its 2007 rule for determining which chemicals and facilities to regulate, though the program’s future hinges on Congress reauthorizing it before it expires in July.

EPA is proposing new measures that would significantly strengthen regulatory oversight of emissions of the solvent ethylene oxide (EtO) from sterilization facilities and other settings, unveiling plans to set strict new workplace safety standards under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) as well as air emissions limits to mitigate high cancer risks.

The White House Office of Management and Budget (OMB) has completed its review of EPA’s draft TSCA risk management rule for the solvent methylene chloride, teeing up formal release of a proposal that a top official has said will signal how the agency plans to regulate other substances and tailor chemical-safety rules to protect workers from occupational exposures.