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TABLE 7 <br /> RECEPTOR EXPOSURE PARAMETERS <br /> MOUNTAIN HOUSE DEVELOPMENT SITE#6 <br /> Mountain House, San Joaquin County,California <br /> Resident Resident <br /> Pathway Parameter Adult Child <br /> IR-Inhalation Rate(m3/day) 20 10 <br /> EF-Exposure Frequency(days/year) 350 350 <br /> Inhalation of Particulates/VOCsED-Exposure Duration(years) 24 6 <br /> BW-Body Weight(kg) 70 15 <br /> AT-Averaging Time,Carcinogen(years) 70 70 <br /> AT-Averaging Time,Noncarcinogen(years) NA' 6 <br /> IR-Ingestion Rate(mg/day) 100 200 <br /> EF-Exposure Frequency outdoors(days/year) 350 350 <br /> Ingestion of Soil ED-Exposure Duration(years) 24 6 <br /> BW-Body Weight(kg) 70 15 <br /> AT-Averaging Time,Carcinogen(years) 70 70 <br /> AT-Averaging Time,Noncarcinogen(years) NAl 6 <br /> SA- Surface Area(CM 2/d) 5,800 2,000 <br /> ABS-Absorption Coefficient CS CS <br /> AF-Adherence Factor(mg/cm2) 1 1 <br /> Dermal Contact with Soil ED-Exposure Duration(years) 24 6 <br /> EF-Exposure Frequency outdoors(days/year) 100 350 <br /> BW-Body Weight(kg) 70 15 <br /> AT-Averaging Time,Carcinogen(years) 70 70 <br /> AT-Averaging Time,Noncarcinogen(years) NAl 6 <br /> Abbreviations: <br /> Cal/EPA=California Environmental Protection Agency <br /> cm2/d=Square centimeters per day <br /> CS=Compound Specific <br /> days/year=Days per year <br /> DTSC=Department of Toxic Substances Control <br /> NA=Not applicable <br /> kg=Kilograms <br /> m3=Cubic meters <br /> mg/cm2=Milligrams per square centimeter <br /> mg/day=Milligrams per day <br /> PEA=Preliminary Endangerment Assessment <br /> VOCs=Volatile organic compounds <br /> Note: <br /> 1.Hazards are only calculated for resident child. <br /> Source: <br /> PEA Guidance Manual(Cal/EPA DTSC,June 1999). <br /> Page 1 of 1 From Science to Solvilons <br />