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TABLE 17. <br /> PARAMETERS USED IN NONCARCINOGENIC HAZARD AND CARCINOGENIC RISK MODELS <br /> SOUTH SHORE PARCELS <br /> CITY OF STOCKTON HOUSING AND REDEVELOPMENT AGENCY <br /> STOCKTON,CALIFORNIA <br /> Landscape Commrercial/ <br /> Construction Worker Maintenance Worker Industrial Worker Residential <br /> Parameter Acronym Units Value Value Value Value Source <br /> Soil Concentration C. mg/kg Chem-Spec Chem-Spec Chern-Spec Chem-Spec Table 1 <br /> Groundwater Concentration C_ mg/L Ch—Sper ChemSpec Chem-Spec Che-Spec Table I <br /> Air Concentration,Dust' C,, room ChemSpec ChemSpec ChemSpec Che-Spec Table 1 <br /> Air Concentration,VOCs C. mg/m' Chern-Spec Chem-Sptt ChemSpec Clv—Spec Calculated-OCVVPAM <br /> Inhalation Rate-Child Ch IR, m'lday N/A N/A N/A 15 USEPA 1997a;CalEPA 1992 <br /> Inhalation Rate-Adult Ad IR, m/day 20 20 20 20 USEPA 1997a;CaIEPA 1992 <br /> Ingestion Rate-Child CH MGR,. rug/day N/A N/A N/A 200 USEPA 1991;CaIEPA 1992 <br /> Ingestion Rate-Adult CH MGR nWday 480 480 50 100 USEPA 1991;CaIEPA 1992 <br /> Skin Surface Area-Child SA, cow N/A NIA N/A 2000 USEPA 1991;CaIEPA 1992 <br /> Skin Surface Area-Adult SAA crn day 3600' 3600' 36002 5800 USEPA 1991.1997;CaIEPA 1992 <br /> Soil Adherence Factor-Child A( mg/em' NIA N/A N/A 0.3 USEPA 1998 <br /> Soil Adherence Factor-Adult AFA mgkrrw 0.2 0.2 0.1 0.085 USEPA 1998 <br /> Dermal Absorption Factor ABS Unitless Chem-Spec Chern-Spec ChemSpec ChemSpec Cal EPA 1994 <br /> Dermal Permeability Coefficient for water Kp Cron. ChemSpec ChemSpec ChemSpec ChemSpec CaIEPA 1994;U.S.EPA 1992 <br /> Groundwater Dermal Exposure Duration-Adult AdEDder hour 0.5 -- -- -- Professional judgement <br /> Exposure Frequency-Child Ch EF days/year N/A N/A N/A 350 USEPA 1991;CaIEPA 1992 <br /> Exposure Frequency-Adult Ad EF days/year 250 250 250 350 USEPA 1991;CaIEPA 1992 <br /> Exposure Duration-Child Ch ED years N/A N/A N/A 6 USEPA 1991;C.IEPA 1992 <br /> Exposue Duration-Adult Ad ED years 1 25 25 24 Project-specific;USEPA 1991;CaIEPA 1992 <br /> Boo Wei t- N/A N/A NIA 15 USEPA 1991;C.IEPA 1992 <br /> y Child Ch BW kg 70 70 70 70 USEPA 1991;CaIEPA 1992 <br /> Body Weight-Adult Ad BW kg <br /> Averaging Time-Noncarcinogenic-Child' Ch AT_ days NIA NIA N/A 2190 USEPA 1991;CalEPA 1992 <br /> Averaging Time-Nonearciriogenic-Adult' Ad AT_ days 365 9125 9125 8760 USEPA 1991;CaIEPA 1992 <br /> Averaging Time-Carcinogenic' AT, days 25550 25550 25550 25550 USEPA 1991;CAEPA 1992 <br /> Toxicity Criteria-Verified Reference Dose RID mg/kg-day ChemSpec Che-Spec Cb.—Spec Chem-Spec IRIS,1999;US EPA 1997b <br /> JToxicity Criteria-Cancer Sloe Factor f CSF (m)kg-day)' Che-Spec ChemS ec ChemS ChemS ee CaIEPA 1995;CaIEPA 1998 <br /> ChemSpec Chemical-specific parameter value. <br /> kg Kilogram. <br /> m'/day Cubic meters per day. <br /> mg/kg-day Milligram per kilogramday. <br /> (mg/kg-day)' Reciprocal milligram per kilogramday. <br /> mg/nn' Milligrams per cubic anter. <br /> OCVPAM Orange County Vapor Pathway Assessnrnt Model <br /> 'Air concentration in duct calculated assuming ambient air particulates are equal to the Federal Ambient Air Quality Standard for the annual average respirable portion PM of 50 ug/m'(0.05nip/m') <br /> 'Skin Surface Arm Value represents 501h percentile for adult male and includes head,forearm,and hands(Exposure Factors Hand/ooh.U.S.EPA,1997) <br /> 'For a noncaminogenic calculation the averaging time("ATne")parameter value is equal to 365 days/year'exposure frequency. <br /> 'For a carcinogenic calculation-the averaging time("ATcare")parameter value is equal to 25550 days(365 days/year-70 years), <br /> References: <br /> California Environmental Protection Agency(CaIEPA). 1992.Supplemental Guidance%or Human Health Multimedia Rick A.ccessinents of <br /> Hazardous Wavle Sites and Permitted Facilities,Depariimeni o%Taxis Suhslance.,Control. July. <br /> CalEPA. 1994.Prelinrinan'Endangerment Accecsmew Guidance Manual. January. <br /> CaIEPA. 1998.Hol Spots Unit Risk and Cancer Potency Values Lookup Table.December. <br /> U.S.Environmental Protection Agency(US EPA). 1991.Risk Assessment Guidance for Superfund,Vol I-Hainan Health Evaluation Manual <br /> Supplemental Guidance.Standard Default Erposure Farfcrv.Interim Final,OSWER Directive 9285.6-03,March. <br /> USEPA. 1992.Dermal Erpo.cum A.cse.,ameru:Principles and Applications.EPA/600/8-91-01 IBH. Office of Health and Enviromnental <br /> Assessment.Washington,D.C. <br /> US EPA. 1997..Expasura Far—.,Hu..fto k.Volume I General F dors.EPA/600/P-95/002Fa.Office of Research and Develop=nL <br /> Washington,D.C. <br /> US EPA. 19986.Health Effects Assessment Surnmry Tables(HEAST):Annual Update,FY 1997.National Center for Enviroturcmal <br /> Assessment,Once of Research and Development and Office of Emergency and Remedial Response,Washington,D.C. <br /> U.S.EPA. 1998.Rick A.ececament Guidance for Superlivid. Volume 1:Human Health Evaluation Manual,Supplemental Guidance, <br /> Dernml Risk Assessment,Interim Guidance. NCEA-W-0364,External Review Draft. May 7. <br /> USEPA. 1999 Integrated Risk Information System(IRIS)downloaded from the World Wide Web for specific chemicals. <br /> 1±nmrim <br /> roe.1 or 1 <br /> x(1MA11--221X <br />