NRC (National Research Council). 2001. Standing Operating Procedures for Developing Acute Exposure Guideline Levels for Hazardous Chemicals. Washington, DC: National Academy Press.
For many chemicals, the data are insufficient to develop AEGL-1 values. The AEGL SOP should offer some guidance on appropriate statements on how to communicate with (or what to communicate to) emergency responders and the public in the absence of AEGL-1 values.