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7YeadweR& Ialb <br /> Figure 11 <br /> Conceptual Site Model <br /> 420 and 423 N Madison Street <br /> Stockton,California <br /> RECEPTOR <br /> HUMAN ECOLOGICAL <br /> PRIMARY PRIMARY POTENTIAL POTENTIAL <br /> SOURCE RELEASE SECONDARY RELEASE EXPOSURE MEDIA EXPOSURE Construction Commercial Nearby Aquatic <br /> MECHANISM SOURCE MECHANISM - ROUTE Worker Worker Resident <br /> Ambient/Trench <br /> Air - <br /> Dissolved Volatilization INHALATION O° O' O O <br /> _ (including Soil <br /> Spills,Overfills, Groundwater Gas) <br /> Underground Storage Leaks <br /> Tanks Indoor Nr <br /> INHALATION O • O O <br /> Soil INGESTION O O O O <br /> Soil DERMAL O O O O <br /> Wind Erosion , <br /> andAtmosphedc Ambient Air - ' <br /> -, -Dispersion I. INHALATION_. _. O O O O <br /> Leachin Groundwater DERMAL O O O O <br /> INGESTION O O O O <br /> Not- <br /> Potentially complete routes of exposure evaluated in Closure Request. <br /> O Incomplete exposure pathway;not evaluated in Closure Request <br /> °Ambient air exposures were not evaluated for volatile chemicals because Indoor intrusion pathway is protective of outdoor soil vapor exposures for the residential and commercial receptors. <br /> June 2013 <br /> I . <br />