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TABLE C-4. AREA 3, INHALATION EXPOSURE PATHWAY EVALUATION <br /> RESIDENTIAL SCENARIO <br /> SOUTH SHORE PARCELS <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> STOCKTON,CALIFORNIA <br /> Ethyl- n-Butyl sec-Butyl Isopropyl- n-Propyl All Chemicals <br /> Acronym Value Benzene Toluene benzene Xylenes benzene benzene benzene benzene PCE of Concern <br /> Exposure Parameters: <br /> Groundwater Concentration CR mg/L Chem-Spec 9.50E-04 4.90E-03 1.50E-03 7.50E-03 ND ND ND ND ND -- <br /> Indoor Air Concentration Ca mg/ma . Chem-Spec 2.82E-08 1.00E-06 2.09E-06 6.54E-07 -- -- - -- - -- <br /> Inhalation Rate-Child Ch IRa m3/day 15 -- -- _- -- -- -- -- <br /> Inhalation Rate-Adult Ad IRa m3/day 20 - -- -- - -- - -` <br /> Exposure Frequency-Child Ch FF 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 At„� days 2190 -" -- - -- -- <br /> Averaging Time-Noncarcinogenic-Adult Ad At,, days 8760 -- -- -- - -- - <br /> Averaging Time-Carcinogenic At,� days 25550 - -- -- -- -' -- <br /> Chronic Daily Intakes: <br /> Noncarcinogenic-Child Ch CDI„, mg/kg-day Chem-Spec 2.70E-08 9.61 E-07 2.00E-06 6.27E-07 - -- -- -- -- <br /> Noncarcinogenic-Adult Ad CDI,, mg/kg-day Chem-Spec 7.7213-09 2.75E-07 5.72E-07 1.79E-07 -- -- -- -" -- -- <br /> Carcinogenic-Child ChCDIc mg/kg-day Chem-Spec 2.32E-09 -- -- -- "" -- <br /> Carcinogenic-Adult AdCDIc mg/kg-day Chem-Spec 2.65E-09 -- <br /> Carcinogenic Resident ResCDI, mg/kg-day Chem-Spec 4.97E-09 -- -- <br /> Toxicity Criteria: - <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 1.10E-01 - <br /> Cancer Slope Factor-IHL CSF-Inh (mg/kg-day)-' Chem-Spec 1.00E-01 NC NC NC NC NC NC NC 2.10E-02 -- <br /> Noncarcinogenic Hazards: <br /> Hazard Quotients-Child Ch HQ unitless Chem-Spec 1.59E-05 8.74E-06 6.90E-06 3.14E-06 - -- -- - 3.47E-05 <br /> Hazard Index-Child Ch HI unitless -- -- -- -- -- 3.47E-05 <br /> Hazard Quotients-Adult Ad HQ unitless Chem-Spec 4.54E-06 2.50E-06 1.97E-06 8.96E-07 -- -- -- -- -- 9.91E-06 <br /> Hazard Index-Adult Ad H1 unitless -- -- -- -- -- -- - -- - 9.91 E-06 <br /> Carcinogenic Risks: <br /> Risk-Child Risk-Ch unitless Chem-Spec 2.32E-10 -- -- -- -- -- -_ 2.32E-10 <br /> Risk-Adult Risk-Ad unitless Chem-Spec 2.65E-10 -- -- -- -- - -- 2.651:-10 <br /> Risk-Resident Risk-Res unitless -- -- -- -- -- __ __ <br /> - - -- 4.97E-10 <br /> Isopropyl benzene used as surrogate for verified reference dose. <br /> 2 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 /> M 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 1 of 1 12/10/99 <br />