Class Exercise # 4 - SolutionRisk Characterization: Carcinogens

Risk = Intake x Toxicity

Intake Rate = (mg/kg-day)

Toxicity = Oral or Inhalation SF (mg/kg-day)-1

1. Adult Ingestion of Water, Benzene

Risk = 5.87 x 10-4 mg/kg-day x 0.029 (mg/kg/day)-1

= 2 x 10-5

2. Child Ingestion of Soil, Benzene

Risk = 1.1 x 10-6 mg/kg-day x 0.029 (mg/kg/day)-1

= 3 x 10-8

3. Adult Inhalation of Vapor, Benzene

Risk = 1.17 x 10-3 mg/kg-day x 0.029 (mg/kg/day)-1

= 3 x 10-5

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Notes: