EPA Releases Memorandum Providing Additional Context On Occupational Exposure Data For DEHP

The U.S. Environmental Protection Agency (EPA) announced on July 28, 2025, the release of a memorandum with additional context on occupational exposure data for di(2-ethylhexyl) phthalate (DEHP). According to EPA, the memorandum provides clarifying information on the draft DEHP risk assessment by providing a calculation of the number of workers and occupational non-users (ONU) exposed to DEHP for each Occupational Exposure Scenario (OES) identified in the draft risk evaluation. EPA states that "[n]ormally, a primary difference between workers and ONUs is that workers may handle DEHP and have direct contact with the chemical, while ONUs do not directly handle DEHP but may be indirectly exposed to it as part of their employment. While the calculation of the numbers of different groups of workers that may be exposed to DEHP through each OES does not have implications for risk evaluation, information on the numbers of different groups of workers may inform the