Human Data.
(A) Human Data. If the hazard is ascertained from human data, a safety factor of ten will be applied to the lowest No Observed Effect Level (NOEL) seen among the relevant studies. If no NOEL can be determined, a safety factor of 100 will be applied to the Lowest Observed Effect Level (LOEL). Both the NOEL and LOEL are defined in terms of daily dose level.