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i <br /> TABLE A-4.AREA 2A, INHALATION EXPOSURE PATHWAY EVALUATION <br /> RESIDENTIAL SCENARIO <br /> SOUTH SHORE PARCELS <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> STOCKTON,CALIFORNIA <br /> E <br /> Ethyl- n-Butyl sec-Butyl Isopropyl- n-Propyl Methylene All Chemicals <br /> Acronym Value Benzene Toluene benzene X lenes benzene benzene benzene benzene Chloride TCE of Concern <br /> Exposure Parameters: <br /> Groundwater Concentration Ce mg/L Chem-Spec 6.12E+00 2.66E+01 9.98E+00 4.79E+01 5.88E-01 2.54E-01 2.09E+00 5.36E-01 3.00E+00 4.58E-01 <br /> Indoor Air Concentration C. mg/m3 Chem-Spec 1.82E-04 5.44E-03 1.39E-02 4.18E-03 7.08E-07 9.73E-05 5.18E-06 6.04E-04 1.85E-03 7.79E-04 <br /> Inhalation Rate-Child Ch IR, m3/day 15 - -- - - -- - - - <br /> Inhalation Rate-Adult Ad IR, m3/day 20 - -- -- - -- - - - <br /> Exposure Frequency-Child Ch EF days/year 350 <br /> Exposure Frequency-Adult Ad EF days/year 350 -- -- - -- -- - - <br /> Exposure Duration-Child Ch ED years 6 - -- - <br /> Exposure Duration-Adult Ad ED years 24 - -- -- -- - <br /> Body Weight-Child Ch BW kg 15 -- -- -- -- -- -- -- -- -- - <br /> Body Weight-Adult Ad BW kg 70 - -- -- - - - -- -- - <br /> Averaging Time-Noncarcinogenic-Child Ch Atn, days 2190 -- -- -- - - <br /> Averaging Time-Noncarcinogenic-Adult Ad At„ days 8760 <br /> Averaging Time-Carcinogenic Atm days 25550 <br /> Chronic Daily Intakes: <br /> Noncarcinogenic-Child ChCDIm mg/kg-day Chem-Spec 1.74E-04 5.22E-03 1.33E-02 4.01E-03 6.79E-07 9.33E-05 4.97E-06 5.79E-04 1.78E-03 7.47E-04 -- <br /> Noncarcinogenic-Adult Ad CDI,, mg/kg-day Chem-Spec 4.98E-05 1.49E-03 3.80E-03 I.1413-03 1.94E-07 2.67E-05 1.42E-06 1.66E-04 5.07E-04 2.13E-04 - <br /> Carcinogenic-Child ChCDIc mg/kg-day Chem-Spec 1.49E-05 -- - -- -- - 1..52E-04 6.40E-05 <br /> Carcinogenic-Adult AdCDIc mg/kg-day Chem-Spec L71E-05 -- -- -- -- - -- 1.74E-04 7.31E-05 <br /> Carcinogenic Resident ResCDk mg/kg-day Chem-Spec 3.20E-05 -- -- -- -- -- -- -- 3.26E-04 1.371:04 -- <br /> Toxicity Cri€eda: - <br /> Verified Reference Dose RfD mg/kg-day Chem-Spec 1.70E-03 1.10E-01 2.90E-01 2.00E-01 1.00E-02 1.00E-02 1.10E-01 1.00E-02 8.6E-01 6.001-03 -- <br /> Cancer Slope Factor-IHL CSF-Inh (mg/kg-day)-I Chem-Spec 1.00E-01 NC NC NC NC NC NC NC 3.513-03 LOE-02 - <br /> Noncarcinogenic Hazards: <br /> Hazard Quotients-Child Ch HQ unitless Chem-Spec 1.02E-01 4.75E-02 4.59E-02 2.00E-02 6.79E-05 9.33E-03 4.52E-05 5.79E-02 2.07E-03 1.24E-01 4.10E-01 <br /> Hazard Index-Child Ch HI unitless -- __ _ __ __ __ -- 4.10E-01 <br /> Hazard Quotients-Adult Ad HQ unitless Chem-Spec 2.931102 1.36E-02 L31E-02 5.72E-03 1.94E-05 2.67E-03 1.29E-05 1.66E-02 5.90E-04 3.56E-02 1.17E-0I <br /> Hazard Index-Adult Ad HI unitless -- -- -- -- -- -- -- 1.17E-01 <br /> Carcinogenic Risks: <br /> Risk-Child Risk-Ch unitless Chem-Spec 1.49E-06 -- -- -- -- -- 5.33E-07 6.40E-07 2.67E-06 <br /> Risk-Adult Risk-Ad unitless Chem-Spec 1.71 E-06 -- -- - -- -- - -- 6.09E-07 7.31 E-07 3.05E-06 <br /> Risk-Resident Risk-Res unitless -- -- -- -- 5.71E-06 <br /> t <br /> I Isopropyl benzene used as surrogate for verified reference dose. <br /> a Indoor air concentration calculated by multiplying volatilization Factor by chemical concentration in groundwater. <br /> NC Not considered to be carcinogenic via inhalation exposures. <br /> Chem-Spec Chemical-specific parameter value. <br /> kg Kilograms. <br /> m3/day Cubic meters per day. <br /> mg/m3 Milligrams per cubic meter. <br /> mg/kg-day Milligrams per kilogram-day. <br /> (mg/kg-day)-Reciprocal milligrams per kilogram-day. <br /> SOMA 99-2218 Page I of 1 12110/99 <br />