Northeastern states are urging the Environmental Protection Agency to grant petitions requesting that the agency add the replacement dry cleaning chemical n-propyl bromide (nPB) to its list of hazardous air pollutants (HAP) subject to Clean Air Act limits, with Rhode Island noting it has regulated nPB since 2008 due to concerns about human health that have also been addressed by OSHA and NIOSH.
December 27, 2025