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HEALTH AND HAZARD RISKS SUMMARY FILE, MW-10 <br /> (Averaged over 7 years or exposure duration, if less than 7 years) <br /> Exposure Duration (years) 6 0 7 0 <br /> MTBE 5 72E-04 5 72E-04 <br /> OPE FACTORS AND REFERENCE DOSES <br /> ------------------------------- <br /> Ingestion Slope Factor [1/(mg/kg-day)] <br /> MTBE 1 80E-03 1 BOE-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 lOE-04 <br /> Inhalation Reference Dose (mg/kg-day) <br /> MTBE 0 86 0 86 <br /> Dermal slope Faactor [1/(mg/kg-day)] ND ND <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 /> Dally Doses and Risk for MTBE <br /> CADD (mg/kg-day) 1 68E-04 6 94E-05 <br /> LADD (mg/kg-day) 1 44E-05 1 12E-05 2 56E-05 <br /> cancer Risk (-? 2 594E-08 2 012E-08 4 607E-08 <br /> Hazard Index (-) 1 955E-04 8 067E-05 <br /> DERMAL CONTACT DURING SHOWER <br /> . Daily Doses and Risk for MTBE <br /> CARD (mg/kg-day} 7 59E-07 4 95E-07 <br /> LADD (mg/k -da ) 6 SIE-08 7 97E-08 1 45E-07 <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 3 71E-02 1 34E-02 <br /> Fraction volatilized from Shower water (-) <br /> MTBE 0 35 0 35 <br /> Total Mass volatilized per Shower (mg) <br /> Y MTBE o 11 0 11 <br /> Daily Doses and Risk for MTBE <br /> CADD (mg/kg-day) 2 84E-04 6 IIE-05 <br /> LADD (mg/kg-day) 2 44E-05 9 84E-06 3 42E-05 <br /> Cancer Ris (-) 2 218E-08 8 957E-09 3 113E-08 <br /> Hazard Index (-) 3 306E-04 7 103E-05 <br /> INGESTION OF IRRIGATION WATER <br /> Daily Doses and Risk for MTSE <br /> CADD (mg/kg-day 9 37E-06 1 49E-06 <br /> LADD (mg/k -da � 8 03E-07 2 40E-07 1 04E-06 <br /> cancer Risk (-) 1445E-09 4 312E-10 1 877E-09 <br /> Hazard Index (-) 1 089E-05 1 729E-06 <br /> INHALATION OF GW SPRAY <br /> cont in Outdoor Air from GW Spray(mg/mA3) <br /> - For carcinogenic risk <br /> MTBE 1 84E-05 6 68E-06 <br /> - For hazard index <br /> MTBE 1 84E-05 1 7SE-05 <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 09E-06 1 73E-07 <br /> LADD (mg/k day) 9 35E-8 508E-11 227538E-11 1 11105E-10 <br /> cancer Risk (-) <br /> Hazard Index 1 268E-06 2 012E-07 <br /> (-) <br /> Page 3 <br />