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Closure Report lit <br /> Golden Graln Manteca Bean Facility,299 Moffat Boulevard,Manteca,California July 16,1996 <br /> 60 <br /> RISK-BASED APPROACH FOR SITE CLOSURE 25 <br /> 61 Objectives of the RBC Approach 25 <br /> 62 Identification of Chemicals of Potential Concern 26 <br /> 63 Exposure Assessment 27 <br /> 6 3 1 Land Use 27 <br /> ! <br /> 632 Identification of Potential Receptors and Exposure Pathways 28 <br /> 6 3 3 Exposure Parameters 28 <br /> 634 Algorithms for Calculating Exposure Dose 29 <br /> ' 6 3 5 Toxicity Assessment 30 <br /> 636 Proposed Target Risk and Target Hazard Index 31 <br /> 6 3 7 Proposed Cleanup Goals for Soil COPCs 32 <br /> 1 6 3 8 Results and Recommendations 32 <br /> 7 0 CLOSURE REQUEST 33 <br /> ' 7 1 Request for Closure 33 <br /> 7 2 Information Summary in Support of Request for Closure 33 <br /> 7 2 1 Extent and Stability of Plume 34 <br /> 722 Hydrogeology 35 <br /> 723 Local Groundwater Uses 35 <br /> 724 Concentrations Remaining 35 <br /> 7 2 5 Cost of Remediation 35 <br /> 7 3 Conclusion 36 <br /> 8 0 REFERENCES 37 <br /> 1 <br /> i <br /> 1 <br /> i <br /> 1 <br /> 42020213_CR <br /> FLUOR DANIEL GT1 <br />. 1 <br />