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S
<br /> RBCA Tool Kit for Chemical Releases,Version 1.2
<br /> SInput Parameter Summary
<br /> Site Name: North Stockton Auto Service C
<br /> Site Location: 8704 N.Davis Rd. Stockton,CA ompleted By: GPS Jab ID: 388 Date Completed:1-Nov-01
<br /> iOFI
<br /> Adul
<br /> Exposure Parameters Residential - Commercial/Industrial Surface Parameters _
<br /> .._, General Cdnstrvet€on', (Units}
<br /> t 1-e rs) f1.1b rs Chr_onic Cgnstmt. A Source Zone area NA NA (cm^2)
<br /> AT, Averaging time for carcinogens(yr) 70 W Length of source-Zane area parallel to wind N NA
<br /> AT„ Averaging time for non-carcinogens(yr) 30 25 1 (cm)
<br /> BW Body weight(kg) 70 15 35 U& Length of it velocity
<br /> in area parallel to GW flow NA (�)
<br /> 70 U,i Ambient air velocity in mixing zone NA (cm/s)
<br /> ED Exposure duration(yr) 30 6 16 25 1 S,t Air mixing zona height NA
<br /> z Averaging time for vapor flux(yr) 30 cm
<br /> 25 1 P. Areal particulate emission rate ( )
<br /> EF Exposure frequency(dayslyr) 350 250 180 L. Thickness of affected surface soils NA (glom"Zs)
<br /> EF, Exposure frequency for dermal exposure 350 NA {cm)
<br /> 250
<br /> IRw Ingestion rate of water(Llday) 2 1 Surface.$oil Column Parameters - -Value
<br /> IR, Ingestion rate of soil(mglday) 100 200 50 100 - IUnitsy.-
<br /> t>c,p Capillary zona thickness pip, (�}-
<br /> SA Skin surface area(dermal)(cm"2} 5800 2023 5000 5800 by Vadose zone thickness Nq
<br /> M Soil to skin adherence factor 1 (cm)
<br /> ET P. Soil bulk density (glcm"3)
<br /> .w„ Swimming exposure time(hdevent) 3 fa Fraction organic carbon NA
<br /> EV,„t„ Svdmming event frequency(eventslyr) 12 12 g NA (_)
<br /> IR,„t,,, Water ingestion while swimming Mr, OAS 12 12 0, Soil total porosity NA
<br /> K„ Vertical hydraulic conductivity NA {-)
<br /> SA,,.r„ Skin surface area for swimming(rm"2) 23000 8100 (cm/d)
<br /> k Vapor permeability NA (�^2)
<br /> IR,�, Ingestion rate of fish(kglyr) 0.025 Lv„ Depth to groundwater NA
<br /> Flyd, Contaminated fish fraction(unifless) 1 L, (cm)
<br /> Depth to top of affected soils NA (cm)
<br /> Complete Exposure La„ Depth to base of affected soils NA (�)
<br /> Pathways and Receptors _._ On-site off-site 1 Off-Site 7; L,,,,, Thickness of affected soils NA
<br /> Groundwater. (
<br /> Groundwater Ingestion None Residential None pH SOUgroundwater pH NA 0(-)
<br /> $oil Leaching to Groundwater Ingestion Nona None None c vadose foundation
<br /> 0w Volumetric water content NA NA NA (_)
<br /> Applicab]e Surface Water Exposure Routes:
<br /> 0. Volumetric arr content NA NA NA (_)
<br /> Swimming NA ___Puilding parameters
<br /> Fish Consumption NA --- Residential Commerelal @nrtsp_;;;'
<br /> Aquatic Life Protection NA Lb Building volumelarea ratio NA NA (n"
<br /> Ab Foundation area NA NA
<br /> lGn Foundation perimeter N NA (cm}
<br /> Soil: ER Building air exchange rate
<br /> Direct Ingestion and peroral Contact None - NA N (115)
<br /> � Foundation thickness NA NA (CM)
<br /> 7-„e Depth to bottom of foundation slab (cm)
<br /> NA NA
<br /> Outdoor Air: '1 Foundation crack fraction NA NA
<br /> Particulates from Surface Soils None None None dp Indoor/outdoor differential pressure NA NA ()
<br /> Volatilization from Soils None None Nona Q, Convective air flow through slab (gfcm/s"2)
<br /> Volatilization from Groundwater None None None g NA NA (cm"3!s)
<br /> / Groundwater Parameters (Units)';
<br /> Indoor Air. -.c .Value
<br /> NA Ss„ Groundwater mixing zone depth NA
<br /> Volatilization from Subsurface Softs None NA If Not groundwater infiltration rate )
<br /> Volatilization From Groundwater None NA NA U Groundwater Darcy velocity 1 9E+0 (cm/yr)
<br /> °� (-Vd)
<br /> Vv„ Groundwater seepage velocity 3,7E+0 (fid)
<br /> Receptor Distance,from.Scurce Media - On-site' -,Off-site 1 Off-site 2 (Ones) K, Saturated hydraulic conductivity 8.6E+2
<br /> Groundwater receptor NA 2280 (crNd)
<br /> :NA mGroundwater gradient 1.5E-3 nVSoil leaching to groundwater receptor N NA (rJn} S,„ Width Of groundwater source zoneq,5E+2Outdoor air inhalation receptor NA N (cm)
<br /> (cm) Sa Depth of groundwater source zone 2.0E+2 (cm)
<br /> 0,a Effective porosity in water-bearing unit 3.5E-1 {-)
<br /> Target eTarget R Values - Individual Cumulative fa.,,, Fraction organic carbon in water-bearing unit 1,0E-3
<br /> TR.,, Target Risk(class A&B carcinogens) 7.0E-fi 1.0E-5 pH,g Groundwater pH 7 0E.0 (-)
<br /> TR, Target Risk(class C carcinogens) 1.0E-5 Biodegradalron considered? ()
<br /> THG Target Hazard Quotient(non-carcinogenic risk) 1.0E+0 1.0E+0 1st Order
<br /> Modeling Options - - - - Transport Parameters _
<br /> RSCA tier Tier 2 Off-site_1, -Off-site 2 .Off-site l - Off sde 2 __Nnilsl_'.
<br /> Outdoor air volatilization model NA Lateral Groundwater Transport S/ Groundwater lnoestlon Soil Leaching to GW
<br /> a. Longitudinal dispersivily ' A. 2.3E+2 NA NA NA (cm)
<br /> Indoor air vola model
<br /> model NA g Transverse dis ersivi /t9-/ L
<br /> Soil leaching model NA r P h' ( 7.5E+1 NA N NA (cm)
<br /> I
<br /> Use soil attenuation model(SAM)for leachate? NA % Vertical dispersivity 1.1E+1 NA NA NA (cm)
<br /> Air dilution factor NA Latoral Ouldoor Air Transport Soil to Outdoor Air tnhal, GW to Outdoor Air hrhat
<br /> Groundwater dilution-attenuationa Transverse dispersion coefficient NA NA NA factor Domenico model w!biodeg. o. Vertical dispersion coefficient NA NA NA NA (tor)
<br /> (
<br /> ADF Air dispersion factor NA N cm)
<br /> NA i NA NA (-)
<br /> NOTE; NA=Not applicable
<br /> Surface Water Parameters - Mats is 2
<br /> Q,,, Surface water flowrale -
<br /> NA (cm"3!s)
<br /> Wq Width of GW plume at SW discharge NAem
<br /> by Thickness of GW plume at SW discharge NA (cm)
<br /> DF,,,. Groundwater-to-surface water dilution factor NA 0
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