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� I a <br /> i <br /> I I <br /> I <br /> 1 <br /> I it 1 i <br /> i <br /> I <br /> TABLE OF CONTENTS (continued) <br /> PROBLEM ASSESSMENT REPORT <br /> 1 , <br /> 50 DISCUSSION OF REMEDIAL OPTIONS 26 <br /> 5 I No Remediation Alternative 26 <br /> 52 Excavation of Soil 26 <br /> ' u 5 3 Onsite Soil Aeration 27 <br /> 54 Offsite Soil Treatment 27 <br /> 55 Landfilling 27 <br /> ' <br /> 56 Bioremediation 27 <br /> 5 7 Full Scale Vapor Extraction 28 <br /> 58 Targeted Vapor Extraction 29 <br /> 60 CONCLUSIONS 30 <br /> 70 RECOMMENDATIONS 32 <br /> 8 0 REPORT LIMITATIONS 33 <br /> Fijzures <br /> 1 Vicinity Map <br /> 2 Site Plan <br /> 3 Cross Section A-A' <br /> 4 Cross Section B-B' <br />' 5 Groundwater Elevation Map <br /> 6 Lateral Limits of Petroleum Hydrocarbons in Soil <br /> 7 Concentrations of Petroleum Hydrocarbons and Selected Organic Chemicals in <br /> Groundwater, Nov 30, 1994 <br /> Tables <br /> I Summary of Soil Borings <br /> II Summary of Groundwater Elevation Measurements <br /> III Summary of Soil Sample Analyses, March 1991 - April 1994 <br /> IV Summary of Soil Sample Analyses, July 1994 - November 1994 <br /> V Summary of Groundwater Analyses <br /> VI Vapor Extraction Test Field and Analytical Data <br />' Appendices <br /> A Boring/Well Logs <br />' B Geophysical Survey Report <br /> C Laboratory Reports and Chain-of-Custody Records <br /> ii <br /> I <br />