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t <br /> TABLE OF CONTENTS <br /> Page <br /> I1.0. INTRODUCTION AND SCOPE OF WORK 1 <br /> 2.0. BACKGROUND 1 <br />' 2 1 SITE LOCATION AND DESCRIPTION 1 <br /> 2 2 UNDERGROUND STORAGE TANK REMOVAL 1 <br /> 2 3 PREVIOUS INVESTIGATION 2 <br />' 2 4 REGIONAL GEOLOGICALI=ROGEOLOGICAL SETTING 4 <br /> 2 5 DOMESTIC AND MUNICIPAL WELL SURVEY 4 <br /> 2 6 SOIL CHARACTERIZATION 5 <br />' 3.0 SOIL VAPOR EXTRACTION PILOT TEST 6 <br /> 3 1 SOIL VAPOR EXTRACTION SYSTEM 6 <br />' 3 2 PILOT TEST PROCEDURES 7 <br /> 3 3 COLLECTION AND ANALYSIS OF VAPOR SAMPLES 7 <br /> 3 4 RESULTS OF VAPOR EXTRACTION PILOT TEST 7 <br />' 3 5 ANALYTICAL RESULTS OF VAPOR SAMPLES 8 <br /> 4.0. IN-SITU AIR SPARGING PILOT TEST 8 <br />' 4 1 PROCEDURES 8 <br /> 4 1 1 System Installation and Setup 9 <br /> 4 12 Collection of In-Situ Air Sparging Ground Water Sample 9 <br /> 4 13 Field Measurements and Data Collection 9 <br /> 4 2 RESULTS OF INSITU AIR SPARGING PILOT TEST 9 <br /> 4 2 1 Induced Pressure 10 <br />' 4 2 2 Dissolved Oxygen 10 <br /> 4 2 3 Organic Vapor 10 <br /> 4 2 4 Ground Water Depth 11 <br />' 4 2 5 Laboratory Results of Ground Water Sample 11 <br /> 5 0. GROUND WATER DRAW-DOWN PILOT TEST 11 <br /> 5 1 PROCEDURES 12 <br /> f5 2 GROUND WATER PUMP TEST RESULTS 12 <br /> 5 3 LABORATORY ANALYSIS OF PURGED GROUND WATER 13 <br /> 5 4 PURGED GROUNDWATER DISPOSAL 13 <br /> 6.0. ASSESSMENT OF HYDROCARBON-IMPACTED SOIL AND GROUND 13 <br />' 7.0 POTENTIAL IMPACT ON NEARBY SURFACE AND GROUND WATER 15 <br /> 8.0. SOEL REMEDIATION ALTERNATIVES 15 <br />' <br /> 81 SOIL VAPOR EXTRACTION 15 <br /> 81 1 Pnnciples 16 <br /> 8 1 2 Required Soil Conditions 17 <br />' 8 1 3 Monitoring Activities 17 <br /> 8 14 Feasibility 17 <br /> 8 1 5 Duration 18 <br /> 8 1 6 Estimated Cost of Soil Vapor Extraction 1$ <br /> 8 2 EX-SITU TREATMENT OF IMPACTED SOIL 18 <br /> IAdvanced GeoEnvi ron mental,Inc <br />