Example Intake Equations

Ingestion of Drinking Water

CW = Concentration of chemical(s) of concern in water (mg/L)

CW x IR x EF x ED

Intake (mg/kg-day) =

BW x AT

Inhalation of Air

CA = Concentration of chemical(s) of concern in air (mg/m3)

CA x IR x EF x ED

Intake (mg/kg-day) =

BW x AT

Ingestion of Soil

CS = Concentration of chemical(s) of concern in soil (mg/kg)

CF = Conversion Factor (10-6 kg/mg)

CS x IR x CF x EF x ED

Intake (mg/kg-day) =

BW x AT

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