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• G•ydrologic Consultants, Inc. <br /> CONTENTS <br /> 1.0 INTRODUCTION....................................................................................................................1 <br /> 1.1 Site Description ..............................................................................................................1 <br /> 2.0 SITE CHARACTERIZATION DATA....................................................................................1 <br /> 2.1 Geology/Hydrogeology ..................................................................................................I <br /> 2.1.1 Regional Geology..................................................................................................1 <br /> 2.1.2 Site Geology..........................................................................................................2 <br /> 2.1.3 Hydrogeology........................................................................................................2 <br /> 2.2 Previous Site Assessment Activities...............................................................................3 <br /> 2.3 12-Hour Pump Test.........................................................................................................5 <br /> 2.4 Baseline Soil Assessment and Temporary Closure of Underground Storage Tanks......5 <br /> 2.5 Vapor Extraction System................................................................................................5 <br /> 2.6 Groundwater Treatment System.....................................................................................6 <br /> 2.7 Contaminants of Concern...............................................................................................6 <br /> 3.0 WELL ABANDONMENT, UST REMOVAL, WELL REINSTALLATION AND SOIL <br /> SAMPLINGACTIVITIES ......................................................................................................7 <br /> 3.1 Well Abandonment—Piping Removal...........................................................................7 <br /> 3.2 Well Abandonment........................................................................................................7 <br /> 3.3 UST Removal Activities.................................................................................................8 <br /> 3.4 UST Tank Pit, Stock Pile and Dispensers Soil Sampling Activities............................10 <br /> 3.5 Reinstallation of Vapor and Groundwater Wells..........................................................11 <br /> 3.6 Reconnection of Remediation System Piping..............................................................12 <br /> 4.0 CONCLUSIONS AND RECOMMENDATIONS.................................................................13 <br /> 5.0 REFERENCES.......................................................................................................................13 <br /> CERTIFICATION .........................................................................................................................15 <br /> TOC 172 UST Removal Report Final Page ii <br />