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CONCEPTUAL SITE MODEL <br /> Yellow Freight Systems, Stockton, California <br /> IFPrimary Secondary Release Mechanisms& Transport Fate of Exposure Potential <br /> Source Source Transport Processes Media Contaminants outReceptor <br /> Ingestion <br /> Contaminated —� Storm Water Erosion Surface Water —410- Off-site Migration Inhalation <br /> Soils of Surface Soils and Runoff Dermal <br /> Sediment Transport <br /> Wind Erosion of Ingestion <br /> Soils! Fugitive Dust Air On site/Offisite Inhalation <br /> Redeposition Surface Soil Dermal <br /> Leaks <br /> Residual Contaminants -.Volatilization Soil Gas Atmosphere Ingestion, <br /> in Surface and InhalationI + <br /> Subsurface Soils Dermal <br /> Contaminated ► Advection/Diffusion Saturated —� Potential Ingestion + <br /> Groundwater Zone Off-site Migration Inhalation + <br /> Dermal - � + <br /> Incomplete exposure pathway r <br /> + Complete exposure pathway <br /> FIGURE 4-1 Sheet,of, <br />