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L <br /> L <br /> LTABLE OF CONTENTS <br /> 1.0 INTRODUCTION...............................................................................................................1 <br /> L 2.0 PURPOSE.........................................................................................................................1 <br /> 3.0 SITE LOCATION ..............................................................................................................1 <br /> 3.1 Site Background..................................................:. ..........................1 <br /> 4.0 REGIONAL AND SITE GEOLOGY.HYDROGEOLOGY::::::::::::::::::................................2 <br /> 5.0 GROUNDWATER MONITORING 3 <br /> 6.0 CONTAMINANT DISTRIBUTION.....................................................................................3 <br /> 6.1 Soil ...........................................................................................................................3 <br /> 6.2 Groundwater.......................I... .................4 <br /> ................................................................. <br /> 7.0 RECEPTOR SURVEY ......................................................................................................4 <br /> 7.1 Wetlands ..................................................................................................................4 j <br /> 7. <br /> Man-made ION ...ors.............................................................................................. 5 <br /> M 1 <br /> 8.0 MASS EVALUATION .5 <br /> 8.1 Contaminant Mass In-Place ....................................._...............................................5 <br /> 8.2 Contaminant Mass L9.0 SOIL VAPOR SURVEY Removed................................................................................... 6 <br /> .6 <br /> 9.1 Soil Vapor Probe Installation.................................................................................6 <br /> 9.2 Soil Vapor Sample Collection................................................................................7 <br /> 9.3 Laboratory Analytical Protocol —Soil Vapor..........................................................7 <br /> 9.4 Laboratory Analytical Protocol—Soil................:.................................. <br /> ..................7 j <br /> 9.5 Soil Disposal.................. .....................................8 #! <br /> ................................................... <br /> 10.0 VAPOR INTRUSION MODELING ....................................................................................8 <br /> 10.1 Risk based Corrective Action Methodology...........................................................8 t <br /> 10.2 Tier 1 and Tier 2 RBCA Evaluation .....................................................................10 G <br /> 10.2.1 Tier 1 RBCA Analysis..........................................................................................10 <br /> 10.2.2 Tier 2 RBCA Analysis..........................................................................................11 <br /> 11.0 REFERENCES................................................................................................................12 <br /> i <br /> L <br /> L <br /> 3 <br /> I <br /> { L <br /> L <br /> L workplan to Conduct Subsurface Soil Vapor Intrusion Study <br /> ATC project 54.26874.0001 Y <br /> t <br /> 1 <br />