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FABLE OF CONTENTS <br /> A <br /> Section4 introduction..........................................................................................................................1 4 <br /> 1 1 Site Background 1-1 <br /> 12 Geology and Hydrogeology 1-2 <br /> Section2 Previous Investigations......................................................................................................2.4 <br /> Section3 Technical Approach............................................................................................................3.4 <br /> 3 1 Human Health Screening Evaluation 3-1 <br /> 3 1 1 Prepare a Conceptual Site Model 3-2 <br /> 3 12 Data Evaluation and Selection of Chemicals of Concern 3-2 <br /> 3 13 Identify Exposure Pathways 3-3 <br /> 3 14 Identify Exposure Points and Concentrations 3-4 <br /> 3 15 Estimate Chemical Intake for All Receptors 3-6 <br /> 3 16 Assess Toxicology of Chemicals of Concern 3-7 <br /> 3 17 Risk Characterization 3-8 <br /> Section4 Site Management.................................................................................................................4.4 <br /> Section5 References............................................................................................................................5.4 <br /> LIST OF TABLES <br /> 2-1 Summary of Soil Analytical Data <br /> 2-2 Summary of Groundwater Analytical Data <br /> 2-3 Summary of Frequency of Detection of Groundwater Data <br /> 3-1 Data Requirements for the Jury Behavior Assessment Model <br /> 3-2 Chemical Specific Input Parameters <br /> 3-3 Data Requirements for AT 123D Groundwater Model <br /> 3-4 Intake Assumptions for Soil Ingestion <br /> 3-5 Intake Assumptions for Dermal Exposure <br /> 3-6 Intake Assumptions for Water Ingestion <br /> 3-7 Intake Assumptions for Inhalation Exposure <br /> 3-8 Chronic and Subchronic RFDs and Slope Factors for Potential Chemicals of Concern <br /> LIST OF FIGURES <br /> ' 1-1 Site Vacuity Map <br /> 1-2 Site Plan <br /> ' 2-1 Groundwater Concentration vs Time Monitoring Well MW-9 <br /> 2-2 Groundwater Concentration vs Tame Monitoring Well MW-11 <br /> ® CVCALTRANS%SHOP101WRKPLNF DOC%7-C=4SW730DONAW4A 1 <br />