Comparative analysis with the epidemiologic literature indicates the association between ben-zene exposure and AML is related to cumulative exposures far in excess of 1 ppm-years, with the likely
threshold for benzene-induced leukemogenesis ofP50 ppm-years cumulative exposure. Based upon the
results of this investigation, it is unreasonable to anticipate AML cases in Florida residents as a result of
ambient airborne benzene concentrations