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Fig. 1. Probabilistic exposure assessment (modified from USEPA, 2001). In a probabilistic exposure assessment, distributions for each input parameter (e.g., V1, V2, to Vn) are combined to yield an overall exposure distribution. This distribution is then used to identify the reasonable maximum exposure (RME), which is defined as exposures corresponding to the 90th to 99.9th percentiles. This definition of RME is consistent between deterministic and probabilistic risk assessment.
