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RISK AND HAZARD INPUT-OUTPUT SUMMARY, AREA III <br /> Concentration used to calculate hazard -index <br /> (Averaged over 7 years or exposure duration, if less than 7 years) <br /> Exposure Duration (years) 6 0 7 0 <br /> MTBE 1 lIE-07 1 IIE-07 <br /> PE FACTORS AND REFERENCE DOSES <br /> ------------------------------- <br /> ingestion Slope Factor [1/(mg/kg-day)] <br /> MTBE 1 80E-03 1 80E-03 <br /> Ingestion Reference Dose (mg/kg-day) <br /> MTBE 0 86 0 86 <br /> Inhalation Slope Factor [1/(mg/kg-day)] <br /> MTBE 9 IOE-04 9 IOE-04 <br /> Inhalation Reference Dose (mg/kg-day) <br /> MTBE 0 86 0 86 <br /> Dermal Slope Factor [I/(mg/kg-day)] <br /> MTBE ND NO <br /> Dermal Reference Dose (mg/kg-day) <br /> MTBE NO ND <br /> SCENARIO <br /> SUMMARY OF RESULTS 1 2 Added <br /> ----------------------------------------------------------------------- <br /> INGESTION OF GROUNDWATER <br /> Daily Doses and Risk for MTBE <br /> CADD (mg/kg-day 2 60E-05 1 11E-05 <br /> LADD (mg/kg-da � 2 23E-06 4 78E-06 7 OIE-06 <br /> Cancer Risk (-� 4 013E-09 8 600E-09 1 261E-08 <br /> Hazard Index (-) 3 025E-05 1 296E-05 <br /> DERMAL CONTACT DURING SHOWER <br /> . Daily Doses and Risk for MTBE <br /> CARD (mg/kg-day) 1 17E-07 7 95E-06 <br /> LADD (mg/k -da ) 1 01E-08 3 41F-08 4 41E-08 <br /> cancer Risk (-) 0 000E+00 0 000E+00 0 000E+00 <br /> Hazard Index (-) 0 000E+00 0 000E+00 <br /> INHALATION DURING SHOWER <br /> Concentration in Bathroom Air (mg/mA3) <br /> MTBE 5 73E-03 5 73E-03 <br /> Fraction volatilized from Shower water (-) <br /> MTBE 0 35 0 35 <br /> Total Mass volatilized per Shower (mg) <br /> MTBE 1 72E-02 1 72E-02 <br /> Daily Doses and Risk for MTBE <br /> cADD (mg/kg-day 4 40E-05 9 82E-06 <br /> LADD (mg/k -da 3 77E-06 4 21E-06 7 98E-06 <br /> Cancer Risk (-) 3 430E-09 3 828E-09 7 258E-09 <br /> Hazard Index (-) 5 114E-05 1 141E-05 <br /> INGESTION OF IRRIGATION WATER <br /> Daily Doses and Risk for MTBE <br /> cADD (mg/kg-day) 1 45E-06 2 39E-07 <br /> LADD (mg/kg-da ) 1 24E-07 1 02E-07 2 27E-07 <br /> cancer Risfc (-� 2 236E-10 1 843E-10 4 079E-10 <br /> Hazard Index (-) 1 685E-06 2 778E-07 <br /> INHALATION OF GW SPRAY <br /> Conc in Outdoor Air from Gw Spray(mg/MA3) <br /> - For carcinogenic risk <br /> MTBE 2 85E-06 2 85E-06 <br /> - For hazard index <br /> MTBE 2 85E-06 2 85E-06 <br /> Fraction volatilized from Irrig water (-) <br /> MTBE 0 34 0 34 <br /> Daily Doses and Risk for MTBE <br /> CADD (mg/kg-day 1 69E-07 2 78E-08 <br /> LADD (mg/k -da � 1 45E-08 1 19E-08 2 64E-08 <br /> Cancer Risk (-) 1 316E-11 1 085E-11 2 401E-11 <br /> Hazard Index (-} 1 962E-07 3 234E-08 <br /> Page 3 <br />