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Twenty-first Interim Report of the Committee on Acute Exposure Guideline Levels Part B (2012) / Chapter Skim
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Twenty-first Interim Report of the Committee on Acute Exposure Guideline Levels: Part B
Pages 1-7

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From page 1...
... In response to that request, the NRC published Guidelines for Developing Community Emergency Exposure Levels for Hazardous Substances in 1993. Subsequently, Standing Operating Procedures for Developing Acute Exposure Guideline Levels for Hazardous Substances was published in 2001; it provided updated procedures, methods, and other guidelines used by the National Advisory Committee (NAC)
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From page 2...
... review periodically the recommended standard procedures for developing AEGLs. This interim report presents the committee's conclusions and recommendations for improving the following AEGL technical support documents (TSDs)
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From page 3...
... AEGL-3 values for acetonitrile Malononitrile AEGL-1 Not Not Not Not Not Insufficient data (nondisabling) recommended recommended recommended recommended recommended AEGL-2 1.2 ppm 1.2 ppm 0.77 ppm 0.32 ppm 0.22 ppm Derived by analogy to (3.3 mg/m3)
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From page 4...
... BENZONITRILE The committee reviewed the AEGL TSD on benzonitrile that was presented by Heather CarlsonLynch of SRC, Inc. Table 2 presents a summary of the proposed AEGL values for benzonitrile and their basis.
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From page 5...
... TABLE 2 Summary of Proposed AEGL Values for Benzonitrile Reviewed by the Committee End Point, Classification 10 min 30 min 1h 4h 8h Derivation Factors AEGL-1 Not Not Not Not Not Insufficient data (nondisabling) recommended recommended recommended recommended recommended AEGL-2 33 ppm 24 ppm 19 ppm 7.3 ppm 3.7 ppm No effect level for (140 mg/m3)
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From page 6...
... Washington, DC: National Academy Press. NRC (National Research Council)
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From page 7...
... Washington, DC: The National Academies Press. NRC (National Research Council)
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Key Terms

  • recommended recommended
  • aegl values
  • acute exposure
  • proposed aegl
  • aliphatic nitriles

  • exposure guideline
  • emergency exposure
  • insufficient data
  • hazardous substances
  • exposure levels

  • committee agreed
  • determined determined
  • guideline levels
  • time scaling
  • including susceptible

  • community emergency
  • warning properties
  • derivation factors
  • susceptible individuals
  • airborne concentration

  • aegl specific
  • exposure periods
  • developing acute
  • aegl tsd
  • five aliphatic

  • developing community
  • default time
  • odor warning
  • standing operating
  • previous comments


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