Where: C = Concentration of the chemical in the contaminated environmental medium (soil or water) to which the person is exposed. The units are mg/kg for soil and mg/ l for water. IRi = Intake rate of the contaminated environmental medium for age bin "i". The units are mg /day for soil and l /day for water. BWi = Body weight of the exposed person for age bin "i". EFi = Exposure frequency for age bin "i" (days/year). This describes how often a person is exposed to the contaminated medium over the course of a typical year. EDi = Exposure duration for age bin "i" (years). This describes how long a person is exposed to the contaminated medium over the course of their lifetime. AT = Average days. This term specifies the length of time over which the average dose is calculated. For quantifying cancer risk a "lifetime" of 70 years is used (ie, 70 years times 365 days/year). SF = Cancer slope factor (mg/kg-day)−1 ADAF = Age-dependant adjustment factor for age bin "i" (unitless)
Where: C = Concentration of the chemical in the contaminated environmental medium (soil or water) to which the person is exposed. The units are mg/kg for soil and mg/ L for water. IRi = Intake rate of the contaminated environmental medium for age bin "i". The units are kg /day for soil and L /day for water. BWi = Body weight of the exposed person for age bin "i". EFi = Exposure frequency for age bin "i" (days/year). This describes how often a person is exposed to the contaminated medium over the course of a typical year. EDi = Exposure duration for age bin "i" (years). This describes how long a person is exposed to the contaminated medium over the course of their lifetime. AT = Average days. This term specifies the length of time over which the average dose is calculated. For quantifying cancer risk a "lifetime" of 70 years is used (ie, 70 years times 365 days/year). SF = Cancer slope factor (mg/kg-day)−1 ADAF = Age-dependant adjustment factor for age bin "i" (unitless)
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