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1 � <br /> . CONTENTS <br />' Chapter <br /> FOREWORD ABS-1 <br />' EXECUTIVE SUMMARY ES-1 <br /> 10 INTRODUCTION 1-1 <br /> 11 BACKGROUND 1-1 <br />' 12 OBJECTIVES 1-2 <br /> 13 APPROACH 1-3 <br /> 14 REPORT ORGANIZATION 1-4 <br />' 20 BACKGROUND SOIL VAPOR EXTRACTION ENHANCEMENT TECHNOLOGIES 2-1 <br /> 30 AIR SPARGING 3-1 <br /> 31 TECHNOLOGY OVERVIEW 3-1 <br /> 32 APPLICABILITY 3-2 <br />' 33 ENGINEERING DESCRIPTION 3-3 <br /> 33 1 Air Flow Within the Subsurface 3-4 <br /> 10 3 3 2 Equipment Requirements and Operational Parameters 3-6 <br /> 3 3 2 1 Air Sparging Wells and Probes 3-6 <br /> 3 3 2 2 Manifolds, Valves, and Instrumentation 3-10 <br /> 3 3 2 3 Air Compressor or Blower 3-11 <br /> 3 3 3 Monitoring of System Performance 3-13 <br /> 34 PERFORMANCE AND COST ANALYSIS 3-14 <br /> 3 4 1 Performance 3-15 <br /> 3 4 1 1 U S Department of Energy Savannah River Integrated <br />' Demonstration Site 3-15 <br /> 3 4 1 2 Toluene Remediation at a Fortner Industrial Facility 3-16 <br /> 3 4 13 Electro-Voice, Inc ,Demonstration Site 3-17 <br /> 342 Cost Analysis 3-18 <br /> 3 4 2 1 Cost for Department of Energy-Patented In Situ <br /> Bioremediation System 3-19 <br /> 3 4 2 2 Cost for Subsurface Volatilization Ventilation System 3-20 <br /> i <br /> 1 <br />