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Probability of encountering mean Benzo(a)pyrene (B[a]P) concentrations exceeding EPA residential EPA preliminary remediation goal (PRG). The PRG is 0.06 mg kg−1 for B[a]P (indicated by X). The mean value detected at reference sites is indicated by O. There is ≈88% probability that residents will encounter a site in South Chattanooga with total B[a]P concentrations exceeding EPA Residential PRGs.
