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TABLE 16. <br /> PARAMETERS USED IN NONCARCINOGENIC HAZARD AND CARCINOGENIC RISK MODELS <br /> NORTH SHORE PROPERTIES <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> STOCKTON,CALIFORNIA <br /> Landscape Commercial( <br /> Construction Worker Maintenance Worker Industrial Worker Residential <br /> ParrC2h <br /> Units Value Value Value Value Source <br /> Soil Co er Table I <br /> Soil Concentration mg/kg ChemSpec Chem-Spec Chert)-Spec Chem-Spa <br /> Chem-Spec Chem-Spec Chem-Spa Chem-Spec Table I <br /> Groundwater Concentration �" Table I <br /> I mg/m, Chem-Spec Chem-Spec Chem-Spec Chem-Spec <br /> Air Concentration.Dust Calculated-OCSVPAM <br /> mg/m' Chem-Spec Chem-Spec Chem-Spec Chem-Spec <br /> Air Concentration.Rate <br /> VOCs USEPA 1997a;CaIEPA 1992 <br /> m/day N/A N/A N/A ISInhalation Rate-Child USEPA 1997a;CaIEPA 1992 <br /> , m'/day 20 20 20 20 <br /> Inhalation Rale-Adult mg/day MGRS USEPA 1991;CaIEPA 1992 <br /> Ingestion Rate-Child CH N/A NIA N/A 200 <br /> cm <br /> 480 480 50 100 USEPA 1991;CaIEPA 1992 <br /> Ingestion Rate-Adult CH MGR mcmd USEPA 1991;CaIEPA 1992 <br /> NIA N/A NIA 2000 <br /> Skin Surface Arra-Child S& 2 <br /> gpp cm'day 3600'- 3600'- 3600 5800 USEPA 1991.1997;CaIEPA 1992 <br /> Skin Surface Area-Adult A4 ��• N/A N/A NIA 0.3 USEPA 1998 <br /> Soil Adherence Factor-Child USEPA 1998 <br /> pPp nly/cm 0.2 0.2 0.1 0.085 <br /> Soil Adherence Factor-Adult Cal EPA 1994 <br /> Dermal Absorption Factor ABS Unitlas Ch—Spec Ch—Spec Chem-Spec Chem-Spec <br /> Chem-Spa Chem-Spec Chem-Spec CaIEPA 1994;U.S.EPA 1992 <br /> Demnal Permeability Coefficient for water Kp cnft Chem-Spec Professional judgement <br /> Groundwater Dermal Exposure Duration-Adult AdEDder hour 0.5 •- '- <br /> Exposure Frequency-Child Ch EF days/year N/A N/A N/A 350 USEPA 1991;CaIEPA 1992 <br /> ays <br /> Ad EF days/year 250 250 250 350 USEPA 1991;CaIEPA 1992 <br /> Exposure Frequency-Adult N/A N/A N/A 6 USEPA 1991;CaIEPA 1992 <br /> Exposure Duration-Child Ch ED years <br /> Ad ED years 1 25 25 24 Project-specific;USEPA 1991;CalEPA 1992 <br /> N/A N/A IS <br /> Exposuc Duration-Adult USEPA 1991;CaIEPA 1992 <br /> Body Weight-Child Ch BW kg N/A 70 70 70 7p USE <br /> 1991;CaIEPA 1992 <br /> Body Weight-Adult Ad BW kg <br /> Avenging Time-Noncarcinogenic-Child' Ch AT„ days N/A N/A N/A 2190 USEPA 1991;CaIEPA 1992 <br /> Avenging Time-Noncarcinogenic-Adult' Ad AT. days 765 9125 9125 8760 USEPA 1991;CaIEPA 1992 <br /> AT, days 25550 25550 25550 25550 USEPA 1991;CaIEPA 1992 <br /> Averaging Tine-Carcinogenic' IRIS,1999;US EPA 19971, <br /> Toxicity Criteria-Verified Reference Dose Ren ng/kg-d.y) CheruSpec ChemSpec ChenrSpec Chem-Spec CaIEPA 1995;CaIEPA 1998 <br /> ToxicityCriteria-Cancer Sloe Factor CSF (mP/kg-day)I Chem-S ec ChemS ec Chem-S ec Chem-Spec ec <br /> Chem-Spec Chemical-specific parameter value. <br /> kg Kilogram. <br /> n/day Cubic meters per day. <br /> mg/kg-day Milligram per kilogram-day. <br /> (mg/kg-day)' Reciprocal milligram per kilogram-day. <br /> mg/m, Milligram per cubic meter. <br /> OCVPAM Orange County Vapor Pathway Assessment Model <br /> 'Air concentration in dust calculated assuming ambient air particulates are equal to the Federal Ambient Air Quality Standard for the arcual avenge respirable portion PMI„of50 up/m'(O.OSnnlg/m') <br /> Skin Surface Area Value represents 50th percentile for adult male and includes head forearms.and hands(fixpasure Fartan Handbook.U.S.EPA,1997) <br /> 'For a noncarcinogenic calculation the averaging time("ATnc")panrneer value is equal to 365 days/year-exposure frequency. <br /> 'For a carcinogenic calculation the averaging time("ATcarc")parameter value is equal to 25550 days(365 days/year'70 years). <br /> References: <br /> California Envirollnemal Protection Agency(CaIEPA). 1992.Supplemental Guidance for Human Health Multimedia Risk Assessments of <br /> Hamrdoas Waste Sites and Pertained Facilities.Departnent ofTmic Substances Control. July. <br /> CaIEPA. 1994.Preliminary Endangerment Assecsrneni Guidance Manual. January. <br /> CaIEPA. 1998.Hot Spots Unit Risk and Cancer Potency Values Lookup Table.December. <br /> U.S.Environmental Protection Agency(US EPA). 1991.Risk Assessincra Guidance for Superfund,Vol I-Hunian Health Evaluation Manual <br /> Supplemental Guidance.Standard Defaull Expwure Factors,Interim Final OSWER Directive 9285.6-03,March. <br /> USEPA. 1992.Dermal Erposure A.ssesonent:Principles and Applications.EPA/600/8-91-0IIBH. OfficeofHexlth and Envirolurental <br /> Assessment.Washington D.C. <br /> US EPA. 1997a.Exposure Factors Handbook,Valume 1 General Factors.EPA/600/P-95/002Fa.Officeof Research and Development. <br /> Washington D.C. <br /> US EPA. 1998b.Health Effects Assessment Surranary Tables(HEAST):Annual Update,Fy 1997.National Center for Environurennl <br /> Assasmenl Office of Research and Developmatt and Office of Emergency and Remedial Response,Washington D.C. <br /> U.S.EPA. 1998.Risk Axs vuent Guidance for Superfund. Valume 1:Human Health Evaluation Manual.Supplemental Guidance, <br /> Deraml Risk Assessi neni interim Guidanre. NCEA-W-0364.External Review Drill May 7. <br /> USEPA. 1999 Integrated Risk Information System(IRIS)downloaded from the World Wide Web for specific chemicals. <br /> Psac 1 or I <br /> SOMA 99.221a <br />