What is the purpose of an acute exposure guideline level (AEGL)?

The purpose of an acute exposure guideline level (AEGL) is to protect public health from short-term hazardous exposures. AEGLs provide values that indicate the minimum concentrations of a chemical in air that could cause adverse health effects in the general population, including sensitive subpopulations, during a short exposure period. These guidelines are crucial for emergency response planning and public safety, as they help identify the levels at which individuals might experience harmful effects after brief exposure to hazardous substances.

The focus on short-term exposure is key because AEGLs are designed for scenarios where individuals may encounter toxic agents in emergencies or accidental situations. They are not meant to address long-term exposure, making it essential that these guidelines are distinct from other toxicity levels, such as chronic exposure limits or long-term health risk assessments.