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1 � C ® R <br /> 1 SIECOR . <br /> 1 <br /> TABLE OF CONTENTS <br /> 1.0 INTRODUCTION <br /> 1 2.0 SITE HISTORY..................................................................................................................1 <br /> 2.1 Site Location ......... ...................................................2 <br /> 2. <br /> 2 Previous Investigations ............................ <br /> 2.3 Supply Well Survey................... 42. <br /> .................................. <br /> 4 Summary of Remedial Action <br /> p_ <br /> 3.0 CURRENT ASSESSMENT ACTIVITIES AND RESULTS ................ b <br /> 4.0 GEOLOGIC AND HYDROGEOLOGIC SETTINGS ...........................................................8 '' <br /> 5.0 PETROLEUM HYDROCARBON DISTRIBUTION AND CONCENTRATION TRENDS.....9 <br /> 5.1 Distribution of Petroleum Hydrocarbons in Soil .................... 9 <br /> 1 5.1.1 Lateral Distribution of Hydrocarbons in Shallow Soil......................................9 <br /> 5.1.2 Vertical Delineation of Hydrocarbons in Soil ............ <br /> 5.2 Petroleum Hydrocarbons in Groundwater............. 9 <br /> 1 5.2.1 Lateral Distribution of TPI-Ig in Shallow Groundwater....................................9 <br /> 5.2.2 Lateral Distribution of Benzene in Shallow Groundwater ............ .,- 10 <br /> .3 Lateral Distribution of MtBE in Shallow Groundwater................................... <br /> 5.2.4 Vertical Delineation of Hydrocarbons in Groundwater.................................. 10 <br /> 1 <br /> 5.3 Shallow Zone Dissolved Concentration Trends............... _ _ .•-• 10 <br /> 6.0 CONCLUSIONS AND RECOMMENDATIONS................................... <br /> 11 <br /> 7.0 REFERENCES 13 <br /> 'r. <br /> Ya. <br /> IA <br /> Jt� <br /> .W• <br /> Y <br /> . <br /> 1205 SCM.doc i 4 <br />