Example EPA Exposure Factors Recommended for Risk...

Example EPA Exposure Factors Recommended for Risk Assessments Exposure Exposure Exposure Land Use Pathway Daily Intake Frequency, Days/Year Duration, Years Body Weight, kg Residential Ingestion of 2 L (adult) 350 30 70 (adult) potable water 1 L (child) 15 (child) Ingestion of soil 200 mg (child) 350 6 15 (child) and dust 100 mg (adult) 24 70 (adult) Inhalation of 20 m³ (adult) 350 30 70 Industrial and contaminants Ingestion of commercial potable water 12 m³ (child) 1 L 250 25 70 Ingestion of soil 50 mg 250 25 70 and dust Inhalation of 20 m³ (workday) 250 25 70 contaminants Agricultural Consumption of 42 g (fruit) 350 30 70 homegrown produce 80 g (veg.) Recreational Consumption of locally 54 g 350 30 70 caught fish

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Find the drinking water equivalent level for chloroform based on a one in a million risk for consumption in the workplace for an adult for their entire career. The potency factor for chloroform is 6.1*10^-3 (mg/kg-d)^-1. Exposure Frequency, Days/Year: 350 Exposure Duration, Years: 30 Daily Intake: - Adult: 2 L - Child: 1 L - Child: 200 mg - Adult: 100 mg - Adult: 20 m - Child: 12 m^3 - Child: 1 L Body Weight, kg: - Adult: 70 - Child: 15 - Child: 15 - Adult: 70 - Adult: 70 Exposure Pathway: - Ingestion of potable water - Ingestion of soil and dust - Inhalation of contaminants - Ingestion of potable water - Ingestion of soil and dust - Inhalation of contaminants - Consumption of homegrown produce - Consumption of locally caught fish Land Use: Residential Exposure Frequency, Days/Year: 350 Exposure Duration, Years: 6 Exposure Frequency, Days/Year: 24 Exposure Duration, Years: 30 Exposure Frequency, Days/Year: 350 Land Use: Industrial and commercial Exposure Frequency, Days/Year: 250 Exposure Duration, Years: 25 Body Weight, kg: 70 Daily Intake: 50 mg Exposure Frequency, Days/Year: 250 Exposure Duration, Years: 25 Body Weight, kg: 70 Daily Intake: 20 m^3 (workday) Exposure Frequency, Days/Year: 250 Exposure Duration, Years: 25 Body Weight, kg: 70 Land Use: Agricultural Daily Intake: 42 g (fruit) Daily Intake: 80 g (veg.) Daily Intake: 54 g Exposure Frequency, Days/Year: 350 Exposure Duration, Years: 30 Body Weight, kg: 70 Land Use: Recreational Exposure Frequency, Days/Year: 350 Exposure Duration, Years: 30 Body Weight, kg: 70

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