Exposure guidance

Submarine Exposure Guidance Levels for Selected Hydrofluorocarbons HFC-236fa, HFC-23, and HFC-404a (2000)... 

NRC (National Research Council). 1985a. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 4. Washington, DC National Academy Press. 

Chapter 5 Toxic Release and Dispersion Models Table 5-7 Emergency Exposure Guidance Levels (EEGLs) from the National Research Council (NRC) (all values are in ppm unless otherwise noted) ... 

TABLE 23-17 Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants... 

Continuous ethyl acetate process, 10 483 Continuous Exposure Guidance Levels (CEGL), 21 837 Continuous extractors, 10 751 Continuous falling film SO3 sulfonation process, 23 544, 550-552 Continuous fiber composites, fabrication of, 26 766, 767... 

NRC (National Research Council). 1987. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 7. Washington, DC National Academy Press. NRC (National Research Council). 1988. Emergency and Continuous Exposure Guidance Levels for Selected Airborne Contaminants, Vol. 8. Washington, DC National Academy Press. 

It should be noted that, for establishment of a 1-h Emergency Exposure Guidance Level (EEGL) for another halocarbon, the NRC (NRC 1996 Bakshi et al. 1998) recommended application of a single interspecies UF of 10 to the cardiac sensitization test with the dog. Because blood concentrations of several halocarbons rapidly reached equilibrium, the NRC also extrapolated this 10-min test to the longer time period of 1 h. Controlled human data were not available for many of the materials considered by the NRC, whereas human data are available for HCFC-141b. 

In general, the subcommittee s approach was to recommend SEALs based on human data to avoid the need for incorporating an interspecies uncertainty factor commonly used in the derivation of exposure guidance levels from animal data. In its derivation of SEALs, the subcommittee did not incorporate an... 

COMPARISONS BETWEEN SEALS AND EXISTING EXPOSURE GUIDANCE LEVELS... 

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