EPA Guidance Outlines Framework For Short-Term Vapor Intrusion Limits

摘要

Draft EPA guidance on assessing the risks of vapor intrusion from chlorinated solvents outlines a framework for crafting protection limits for short-term exposures, a method that appears to back the controversial approach Region IX used earlier this year to set an acute action level for trichloroethylene (TCE), but sources say the method is broad and conservative and that more specific information is needed to regulate short-term exposures.