How does EPA define “hazardous” (according to RCRA) as opposed to OSHA?
The EPA applies the term “hazardous” to solid wastes (according to the Resource Conservation and Recovery Act [RCRA]) that, based on their quantity concentration or toxicity, pose a significant threat to human health or the environment. The EPA focuses on minimizing the public’s exposure to these substances. OSHA defines the term “hazardous” to include all substances for which exposure results in or may result in adverse health effects for employees. For example, the EPA does not regulate nuisance dust unless there is a listed or characteristic chemical attached to the dust levels that exceed RCRA guidelines. OSHA does regulate nuisance dust to the extent that the dust itself has the potential to expose workers to adverse health effects when exceeding permissible exposure limits.
