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RISK AND HAZARD INPUT-OUTPUT SUMMARY Dermal Permeability coefficient (cm/hour) MTBE 3.10E-03 3 10E-03 Absorption Adjustment Factor for Dermal Exposure to Water (-} MTBE 10 10 INHALATION DURING SHOWER volume of Bathroom (mA3) 3 00 3 00 Temperature of shower water (C) 48 0 48.0 shower Flow Rate (1/min) 10 0 10.0 Droplet Diameter (cm) 0 100 0.100 shower Droplet Droptime (s) 2.00 2.00 Exp. Time For washing Indoors[hr/d] 0.200 0 200 In Rate in the Shower (mn3/hr) 0.600 0 625 Lung Retention Factor (-) 1 00 1.00 Exp Freq Groundwater (events/year) 350 350. Exp Duration Groundwater (years) 6 00 30.0 Absorption Adjustment Factor for Inhalation (-) MTBE 1 0 1.0 Henry"s Law Constant {-) MTBE 2.04E-02 2 04E-02 Molecular weight (g/mole) MTBE 88 88. INGESTION OF IRRIGATION WATER Ingestion rate (ml/hr) 50 0 50.0 Exp. Freq Irrigation (events/year) 150 150 Exp Duration Groundwater (years) 6 00 30.0 Absorption Adjustment Factor for Ingestion of water (-) MTBE 1 0 1.0 INHALATION OF GW SPRAY width of sprinkler spray (m) 9 00 9.00 Height of Breathing zone (m) 2 00 2.00 Average windspeed (m/s) 2 25 2.25 Temperature of Irrigation water (C) 25 0 25.0 Sprinkler Flow Rate (1/min) 50 0 50 0 Droplet Diameter sprinkler (cm) 0 200 0 200 Droplet Droptime for sprinkler (s) 5.00 5.00 Time in sprinkler (hour/day) 2 60 2.00 Inhal Rate outdoors (MA3/h r) 0.830 0 830 Lung Retention Factor (-) 1 00 1.00 Exp. Freq Irrigation (events/year) 150 150 Exp Duration Groundwater (years) 6 00 30.0 Absorption Adjustment Factor for Inhalation (-) MTBE 1 0 1.0 Henry"s Law constant (-) MTBE 2 04E-02 2 04E-02 Molecular weight (g/mole) MTBE 88 88 DERMAL CONTACT WITH IRRIG WATER Total Skin Surface Area (CMA2) 7 280E+03 2 300E+04 . Fraction skin Exposed to water ( -) 0 500 0. 560 Time -in Irrigation water (hour/da ) 2 60 2.00 Exp Freq Irrigation (events/year 150 150. Page 2