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r <br />+� TABLE OF CONTENTS <br /> CCONTENTS PAGE <br /> L1.0 INTRODUCTION.........................................................................................................1 <br /> ' 2.0 BACKGROUND .........................................1 <br />' 21 Site Location 1 <br /> 22 Previous Work 1 <br />' 3.0 OBJECTIVE AND SCOPE OF SITE ASSESSMENT................................................2 <br /> L 4.0 FIELD INVESTIGATION............................................................................................3 <br /> ( <br /> 41 Soil Bonngs 3 <br /> tL ' 5.0 RESULTS OF INVESTIGATION................................................................................3 <br />' <br /> 51 Site Geology 3 <br /> 52 Analytical Results - Soil 4 <br /> f <br /> 53 Analytical Results - Groundwater 4 <br /> 6.0 GROUNDWATER GRADIENT...................................................................................4 <br />' l 7.0 THORNTON NO.2 MUNICIPAL SUPPLY WELL - CONSTRUCTION.................5 <br /> l 8.0 DISTRIBUTION OF PETROLEUM HYDROCARBONS.........................................5 <br /> t81 Soil 5 <br />' 82 Groundwater 5 <br /> 9.0 SUMMARY...................................................................................................................6 <br /> 1 10.0 REMEDIAL ALTERNATIVES ...................................................................................7 <br /> 101 Natural Attenuation 7 <br /> 102 Soil Excavation 8 <br /> 103 In-Situ Air Sparging with Soil Vapor Extraction 8 <br /> 11.0 RECOMMENDATIONS ..............................................................................................9 <br /> 12.0 REFERENCES............................................................................................................10 <br /> 1 [� <br /> SMITH <br />