Emergency Response Planning Guidelines (ERPGs)
Emergency Response Planning Guidelines (ERPGs) : Values, developed under the auspices of the American Industrial Hygiene Association, intended to provide estimates of concentration ranges where one reasonably might anticipate observing adverse effects as described in the definitions of ERPG-1, ERPG-2 and ERPG-3 as a consequence of exposure to a specific nonradioactive hazardous substance. ERPG-1 is the maximum airborne concentration below which it is believed that nearly all individuals could be exposed for up to 1 hour without experiencing other than mild transient adverse health effects or perceiving a clearly defined, objectionable odor. ERPG-2 is the maximum airborne concentration below which it is believed that nearly all individuals could be exposed for up to 1 hour without experiencing or developing irreversible or other serious health effects or symptoms which could impair an individual's ability to take protective action. ERPG-3 is the maximum airborne concentration below which it is believed that nearly all individuals could be exposed for up to 1 hour without experiencing or developing lifethreatening health effects. Regulations, such as 29 CFR 1910.38, require employee emergency action plans, including "procedures to account for all employees after emergency evacuation has been completed."
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