Risk Characterization

Excess vs. Total Cancer Risk

BackgroundCancer Risk

ExcessRisk Limit

Total Risk

0.25

1.0E-6

0.250001

0.25

1.0E-5

0.25001

0.25

0.2501

1.0E-4

Background Risk: Existing risk of cancer incidence.

Excess Risk: Additional risk of cancer incidence due to exposure to site chemicals.

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