Laserfiche WebLink
Table 2b: <br />Noncancer Hazard Index Calculations for Exposure of Construction Worker to Sludge <br />Waste Water Pollution Control Plant, Waste Water7reatment Weiland Project, CRY of San Leandro, San Leandro, California <br />w sran... Lnlul.nrtnI I <br />snu vankulate Inhalallrn Alitules <br />[hem <br />Group <br />Chemical <br />-RN <br />Sw, <br />(mg/kg) <br />RBA <br />ADD <br />(mg/kg/d) <br />RfD- <br />1 k¢/d) <br />HQ <br />AB34,,,,, <br />ADD - <br />(mg/kg/d) <br />- Mod <br />(mg/kg/dj <br />HQ <br />C,,, <br />m' <br />RK <br />1 ma) <br />Hot <br />Ca, <br />m' <br />RK <br />Img/m'1 <br />HQ <br />HQ <br />lNO0.G <br />Monk <br />7440.384 <br />1 4.7E+40 <br />0.6 <br />A0E-05 <br />5-0E-03 <br />4.K4X <br />3.00E-02 <br />3,7E-06 <br />5.0E-03 <br />3At 04 <br />15E-os <br />9.4E-08 <br />LSE•05 <br />72E•04 <br />1 1-51-03 <br />[NORG <br />[admlum <br />7440�43-9 <br />3.2E.00 <br />7.7C-06 <br />7-9i-03 <br />7.7E-03 <br />1.00E-03 <br />3.9E-08MLS�4�15 <br />1 SF01 <br />9AE474 <br />L-4E.0$ <br />9AE-O{ <br />8.1E-0fi <br />43E-03 <br />INORG <br />aturaum II! <br />16065413.1 <br />a.2E•02 <br />3-6E-04 <br />15Er00 <br />7.4E-04 <br />S.OF-03 <br />8-4E.06 <br />5.0E-03 <br />19E-04 <br />4.3E-04 <br />INORG <br />Chromlu n Vl <br />18540-29.9 <br />9.SE-00 <br />8.3E-06 <br />s.DE-M <br />1.6E 03 <br />1-OF-03 <br />19E-W <br />lAE•D3 <br />2-2E-05 <br />1.6E-03 <br />NORG <br />Co er <br />7440-50-8 <br />2.0E+02 <br />1.7E-04 <br />4.0E-02 <br />4.3E-03 <br />4.0E-06 <br />Lend <br />7439-92-1 <br />1.6E+03 <br />1.0-03 <br />12E-05 <br />INQRG <br />ktettY <br />7439-97-fi <br />1.SEr00 <br />7.3E-06 <br />1.6E-01 <br />AOE-03 <br />IIAE•05 <br />3.0E-04 <br />37l•02 <br />3AE-04 <br />3AE414IHCNtGNkkelSSE-05 <br />g1E1131NORG <br />2AE-0I <br />2.7E 03 <br />-05 <br />1 3E-06 <br />3.4E4lsIHDAO <br />p l <br />7440•]I-4 <br />2AE-03 <br />1.7E-0j <br />3.0E-03 <br />3.4E-03 <br />-054,pE.07INORG <br />hoc <br />7440-6" <br />SAE.G7 <br />S16-0c <br />IAE-01 <br />t 7E-03 <br />7.7E. GS <br />Hazard Index: 2E-01 2E-03 3E-02 2E-02 3E-01 <br />Notes: <br />Exposure Concentrations: <br />Sludge exposure concentrations (C,J based upon maximum detected concentrations in sludge <br />Cr III concentration estimated using maximum detected Cr (total) and subtracting the estimated Cr VI concentration determined based upon the average ratio Cr VI:Cr (total) observed In soil sampling data. <br />Exposure Factors: <br />Soil Ingestion Rate (mg/d) = 200 <br />Adherence Factor(mg/cmz)= 0.8 <br />Skin Surface Area (cmz/d) = 3,527 <br />Body Weight (kg)= 80 <br />Exposure Frequency(d/yr)= 125 <br />E%Po:ureTme(h/d)= B <br />Exposure Duration(yr)= 1 <br />Averaging Ti-, noncancer(d)= 365 <br />Air Concentrations: <br />The concentration of chemicals in air due to vapor emissions based upon estimated normalized average vapor Flux (kg/mz-s) form unsaturated soil using steady state model derived by Jury, Spencer, and Farmer (1983). <br />Disp Factor C/Q (kg/m')/(kg/mz-s): 19.3 <br />The concentration of particulates in the air is assumed to be no more than the California Ambient Air Quality Standards for PMt4 of 20 ug/m'. <br />OfherAcmnyms: <br />HQ- Hazard Quotient <br />RBA - Relative Bloavallabllry Adjustment Factor <br />LADD - Lifetlme Average Daily Dose <br />ABSae,m - Dermal Absorption Factor <br />Page: 1 of 1 Terraphase Engineering Inc. <br />