ARCHIVED REPORTS_SITE CHARACTERIZATION REPORT 1999

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TABLE E-1.AREA 20, MULTIMEDIA PATHWAY EVALUATION FOR OUTDOOR SOIL EXPOSURE ' CONSTRUCTION WORKER SCENARIO NORTH SHORE PROPERTIES CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY STOCKTON,CALIFORNIA ' All Chemicals Acronym Units Value As Se of Concern Exposure Parameters: -- Soil Concentration Cs mg/kg Chem-Spec 6.67E+O1 7.70E-01 Particulate Concentration Ca mg/m' Chem-Spec 3.34E-06 3.85E-08 Exposure Point Air Concentration from Soil r C,., mg/m' Chem-Spec -- -- -- Ingestion Rate-Adult Ad INGR, mg/day 480 -- -- -- ' Ingestion Conversion Factor CF kg/mg 1.00E-06 Inhalation Rate-Adult Ad IR, m'/day 20 Skin Surface Area-Adult SAa cmt 3600 -- -- -- Soil Adherence Factor-Adult AFa mg/cm' 0.2 -- -- Dermal Absorption Factor ABS Unitless Chem-Spec 3.00E-02 1.00E-02 -- Soil Dermal Conversion Factor CFs kg/mg I.00E-06 Groundwater Dermal Conversion Factor CFgw Ucm 1.00E-03 Dermal Permeability Coefficient from Water K. em/hr Chem-Spec -- -- Exposure Frequency-Adult Ad EF days/year 250 -- -- -- ' Exposure Duration-Adult Ad ED years 1 Body Weight-Adult Ad BW kg 70 Averaging Time-Noncarcinogenic-Adult Ad At,,,. days 365 -- -- -- Averaging Time-Carcinogenic At_ days 25550 -- -- -- Chronic Daily Intakes: Inhalation-Noncarcinogenic-Adult Ad IHL CDInc mg/kg-day Chem-Spec 6.53E-07 7.53E-09 Ingestion-Noncarcinogenic-Adult Ad ING CDInc mg/kg-day Chem-Spec 3.13E-04 3.62E-06 -- Dermal-Noncarcinogenic-Adult Ad DER CDInc mg/kg-day Chem-Spec 1.41E-05 5.42E-08 -- ' Inhalation-Carcinogenic-Adult Ad IHL CDIc mg/kg-day Chem-Spec 9.32E-09 NC =_ Ingestion-Carcinogenic-Adult Ad ING CDIc mg/kg-day Chem-Spec 4.48E-06 NC Dermal-Carcinogenic-Adult Ad DER CDIc m/k-da Chem-Spec 2.01 E-07 NC Toxicity Criteria: ' Verified Reference Dose-IHL RfD-Inh mg/kg-day Chem-Spec -- 2.30E-05 Verified Reference Dose-ING RfD-Ing mg/kg-day Chem-Spec 3.00E-04 5.00E-03 Verified Reference Dose-DER' RfD-Der mg/kg-day Chem-Spec 9.00E-06 5.00E-05 -- Cancer Slope Factor-IHL CSF-Inh (mg/kg-day)-I Chem-Spec 1.50E+01 NC -- ' Cancer Slope Factor-ING CSF-Ing (mg/kg-day)" Chem-Spec 1.50E+00 NC -- Cancer Slope Factor-DER' CSF-Der (mg/kg-day)" Chem-Spec 5.00E+01 NC Noncarcinogenic Hazards: Soil Hazard Quotient-Adult-IHL Soil Ad HQ-Ihl unitless Chem-Spec -- 3.28E-04 3.28E-04 ' Soil Hazard Quotient-Adult-Ing Soil Ad HQ-Ing unitless Chem-Spec 1.04E+00 7.23E-04 1.04E+00 Soil Hazard Quotient-Adult-Der Soil Ad HQ-Der unitless Chem-Spec 1.57E+00 1.08E-03 1.57E+00 Soil Hazard Index-Adult Soil Ad HI unitless 2.61E+00 Carcinogenic Risks: Risk-IHL RISK-IHL unitless Chem-Spec 1.40E-07 NC 1.40E-07 ' Risk-ING RISK-ING unitless Chem-Spec 6.71E-06 NC 6.71E-06 Risk-DER RISK-DER unitless Chem-Spec 1.01E-05 NC LOIE-05 Total Risk Total RISK unitless 1.69E-05 Dust concentrations conservatively estimated assuming that the ambient air particulate levels are equal to the National Ambient Air Standard for the annual ' average respirable portion(PM 10)of 50 ug/m3. '-Outdoor air concentration calculated by multiplying volatilization factor by chemical concentration in soil. 'Dermal reference dose and cancer potency factor calculated by dividing respective oral CSF by dermal absorption factor and multiplying the oral RID by dermal absorption (ABS)(U.S.EPA,199 1) ' NA Not an applicable exposure pathway. NC Not considered to be carcinogenic Chem-Spec Chemical-specific parameter value. kg Kilograms. m'/day Cubic meters per day. ' mg/m' Milligrams per cubic meter. mg/kg-day Milligrams per kilogram-day. (mg/kg-day)' Reciprocal milligrams per kilogram-day. kg/mg Kilograms per milligrams mg/cm'- milligrams per square centimeter ' cm' square centimeter -.1199-221. OMA99--'?IB Page l of 1 12/9/99