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BP RISC Model Outputs & Inputs -Aggregate Industries F Street Facility <br />Project Number 1001018 <br />March 11, 2003 <br />Page 3 <br />Concentration used to calculate hazard index <br />(Minimum of 7 years or exposure duration) <br />Exposure Duration (years) 7.0 <br />Benzene 5.28E-03 <br />Ethylbenzene 3.7 <br />Toluene 7.1 <br />TPH Aliphatic C16-35 .00 <br />Xylenes (mixed) 73. <br />SLOPE FACTORS AND REFERENCE DOSES <br />Ingestion Slope Factor [1/(mg/kg-day)] <br />Benzene 2.90E-02 <br />Ethylbenzene ND <br />Toluene ND <br />TPH Aliphatic C16-35 ND <br />Xylenes (mixed) ND <br />Ingestion Reference Dose (mg/kg-day) <br />Benzene ND <br />Ethylbenzene .10 <br />Toluene .20 <br />TPH Aliphatic C16-35 2.0 <br />Xylenes (mixed) 2.0 <br />SUMMARY OF RESULTS <br />Ingestion Of Groundwater <br />Benzene <br />CDI (mg/kg-day) 1.45E-04 <br />LADD (mg/kg-day) 3.45E-OS <br />Cancer Risk (-) 1.00E-06 <br />Hazard Index (-) 0.00E+00 <br />Ethylbenzene <br />CDI (mg/kg-day) 1.01E-01 <br />LADD (mg/kg-day) 3.37E-02 <br />Cancer Risk (-) 0.00E+00 <br />Hazard Index (-) 1.01E+00 <br />PnRl~G ON <br />