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TABLE OF CONTENTS <br /> Pale <br /> LILLUSTRATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> TABLES . . . . . . . . . . . . . . . <br /> . <br /> 3 <br /> LINTRODUCTION . . . . . . . . . . . . . . . . . . . <br /> . . . . . . . . . . 1 <br /> SCOPE . . . . . . . . . . . . . . . . . . . 1 <br /> SITE DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> ' L BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> r <br /> REGIONAL AND SITE GEOLOGY AND HYDROGEOLOGY . . . . . . . . . . . 9 <br /> LMETHODOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br /> SOIL VAPOR SURVEY . . . . . . . . . . . . . . . . . . . . . . . 11 <br /> OBSERVATION WELL INSTALLATION, WELL DEVELOPMENT. AND <br /> HYDRAULIC 'GRADIENT DETERMINATION 13 <br /> SOIL SAMPLING AND ANALYSIS . . . . . . . . . . . . . . . . . . . 16 <br /> GROUNDWATER SAMPLING AND ANALYSIS . . . . . . . . . . . . . . . 17 <br /> RESULTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 <br /> HYDRAULIC GRADIENT AND FLOW DIRECTION ANALYSIS . . . . . . . . . 19 <br /> Lowt` SOIL ANALYSES . . . . . . . . . . . . . . . . . . . . . . . . . 19 <br /> GROUNDWATER ANALYSES . . . . . . . . . . . . . . . . . . . . . . 19 <br /> . . . . . . . . . . . . . . . . . . . . . . . . . . . <br /> DISCUSSION 24 <br /> SOIL AND GROUNDWATER INVESTIGATION . . . . . . . . . . . . . . . 24 <br /> Total Petroleum Hydrocarbons as gasoline (TPH) . . . . . . . 24 <br /> Benzene, Toluene, Ethylbenzene and Xylenes (BTEX) . . . . . 26 <br /> i Ethylene Dibromide, 1,2-Dichloroethane and Polynuclear <br /> Aromatic Hydrocarbons . . . . . . . . . . . . . . . . . . . 26 <br /> Lead 26 <br /> CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 <br /> LBIBLIOGRAPHY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 <br /> APPENDICES <br /> APPENDIX A: SOIL BORING LOGS AND LABORATORY ANALYSES OF <br /> SOIL AND GROUNDWATER SAMPLES COLLECTED DURING <br /> THE NOVEMBER 1986 FIELD INVESTIGATION <br /> LAPPENDIX B: SOIL BORING LOGS AND SIEVE ANALYSES FROM <br /> THIS INVESTIGATION <br /> APPENDIX C: LABORATORY ANALYSES OF SOIL AND GROUNDWATER <br /> SAMPLES, FIELD DATA SHEETS, AND CHAIN-OF=CUSTODY <br /> FORMS FROM THIS INVESTIGATION <br /> 3286a/BAV100 i <br />