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ATTACHMENT 3
<br /> HUMAN HEALTH SCREENING EVALUATION
<br /> POMBO PROPERTY
<br /> 1755 WEST 11TH STREET,TRACY,CALIFORNIA
<br /> PROJECT#7243.001
<br /> MAXIMUM CONC;GROUNDWATER NOT POTABLE
<br /> DERMAL CONTACT AND INCIDENTAL INGESTION OF SOIL-Cancer
<br /> Chemical Concentration Absorption Oral Slope Excess Cancer
<br /> Soil(C§) Fractions Soil Factor(SFo) Risk
<br /> (ABSds)
<br /> (mfg) (`•) (n► g-d)'i (--)
<br /> z
<br /> Benzene ND 0.1 0.1 ND
<br /> 19 1.3 0.1 NA NA
<br /> Toluene 7.5 0.1 NA NA
<br /> Xylenes,Total 3.4 0.1 NA NA
<br /> Acenaphthene 0.76 0.15 NA NA
<br /> Benzo(a)anthracene 0.13 0.15 1.2 6.813-07
<br /> Chrysene 0.54 0.15 0.12 2.8E-07
<br /> Fluoranthene 0.098 0.15 NA NA
<br /> Fluorene 3.9 0.15 NA NA
<br /> Naphthalene 3.3 0.15 NA NA
<br /> Phenanthrene 5.1 1 0.15 NA NA
<br /> jPyrene 0.27 0.15 NA NA
<br /> IE-06
<br /> Risk,., = SF. x C, x IR,,,,,,,,x EF x ED.,,x 10'6 kg/mg
<br /> BW,,.,, x AT x 365 dayslyr.
<br /> IR,,,1fd x EF x ED,,,,, x 10'kg/mg
<br /> + SF. x C, x BW.,,,.0 x AT x 365 days/yr
<br /> SA,d.,, x AF x ABS x EF,,,,,x ED.,,,, x 10"kg/mg
<br /> + SF. xC, x
<br /> ]3W,,.,,x AT x 365dayslyr
<br /> SAan,re x AF x ABS x EFS,,;,,x ED.,,i,d x I076 kg/mg
<br /> + SF, x C, x BW,,,,,x AT x.365 days/yr
<br /> Parameter -Symbol Values Units
<br /> Exposure Frequency-in estion EFig 350 d/yr
<br /> Exposure Duration-adult EDar 24 s
<br /> Exposure Duration-child EDcr 6 yrs
<br /> Body Weight-adult B War 70 k
<br /> Body Weight=child BWcr 15 k
<br /> Averaging Time-Cancer Arca 70 yrs
<br /> Ingestion Rate-adult IRsar 100 m d
<br /> Ingestion Rate-child IRscr 200 m d
<br /> Exposure Frequency-dermal
<br /> contact/adult EFdc 100 d/yr
<br /> Exposure Frequency-Dermal
<br /> contact/child EFdc 350 dlyr
<br /> Surface Area-adult SAsar 5800 cm
<br /> Surface Area-child SAser 2000 cm
<br /> Soil-to-Skin Adherence Factor AF 1. mg/cm2
<br /> Conversion Factor from mg to kg CF,,,_k 113-06 kg/mg
<br /> pomba_based on UCLslrisk soil Page 13 of 18
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