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Protective Action Criteria (PACs) are essential components for planning and response to uncontrolled releases of hazardous chemicals. These criteria, combined with estimates of exposure, provide the information necessary to evaluate chemical release events for the purpose of taking appropriate protective actions.
Together, AEGLs, ERPGs, and TEELs are referred to as chemical Protective Action Criteria - PACs. TEEL values are always subject to change, being replaced by AEGLs or ERPGs when new values are published, and many are updated annually when different exposure limits [e.g., Permissible Exposure Limits (PELs) or Threshold Limit Values (TLVs)] or new
