ADD = Average daily dose (mg/kg-day)
C = Average concentration in the media during the exposure period
CR = Contact rate, the amount of contaminated medium contacted per unit time event
EF = Exposure frequency (days/year)
EP = Exposure period (years)
B = Bioavailability due to matrix-binding effects
BW = Body weight, the average body weight over the exposure period (kg)
D = Duration of exposure (days)