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LTABLE OF CONTENTS <br /> 1.0 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0 OBJECTIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.1 Proposed Scope of Work . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . 1 <br /> 3.0 BACKGROUND . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . ..2 <br /> 3.1 Facility Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 3.2 Project History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 <br /> 4.0 GEOLOGIC AND HYDROGEOLOGIC SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 4.1 Geology and Regional Hydrogeology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br /> 4.2 Local Hydrogeology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 5.0 VAPOR EXTRACTION TESTING AND RESULTS REVIEW . . . . . . . . . . . . . . . . . . 4 <br /> { 5.1 Vapor Extraction Testing and Sampling Methodology . . . . . . . . . . . . . . . . . . . . 4 <br /> I C' 5.2 Analytical Results from Vapor Sampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 <br /> 5.3 Vapor Extraction Test Results . . . . . . . . . . . . . : : : : : : : . . . . . . . . . . . . . . . . . 5 <br /> 5.4 Radius of Influence 5 <br /> 6.0 REMEDIAL ACTION ALTERNATIVES REVIEW . . . . ... . . . . . . . . . . . . . . . . . . . . . 5 <br /> 6.1 OPTION I - Passive Soil Remediation . . . . . . . . 6 <br /> 6.2 OPTION II - Soil Vapor Extraction with Off-Gas Treatment . . :. . . . . . . . . . . . 6 <br /> � 6.3 OPTION III - Excavation With Off-site DisposallTreatment . . . . . . . . . . . . . . . . 7 <br /> 6.4 Recommended Remedial Action Alternative . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> 7.0 VAPOR EXTRACTION SYSTEM INSTALLATION AND OPERATION . . . . . . . . . 8 <br /> 7.1 VES Manifold and Vent Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> 7.2 Installation of 250 SCFM "Bobcat" Catalytic Oxidization <br /> Unit and VES Manifold Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 <br /> 7.3 Equipment Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . 8 <br /> # 7.4 Vapor Extraction System Operation and Maintenance . . . . . . . . . . . . . . . . . . . 9 <br /> SAMPLING 8.0 CONFIRMATORY SOIL SA NG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 <br /> 9.0 QUARTERLY GROUNDWATER SAMPLING AND ANALYSIS . . . . . . . . . . . . . . 10 <br /> 10.0 LABORATORY ANALYSIS METHODOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 <br /> 10A Groundwater and Vapor Samples from Wells and VES Influent . . . . . . . . . . . . 11 <br /> L <br /> 11.0 PREPARATION OF REPORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 <br /> I 11.1 Quarterly Groundwater Status Reporting . . . . . . . . . . . . . . . . . . 12 <br /> . . . . . . . . . . . <br /> 11.2 Reporting of Vapor Extraction and Treatment System Operation 12 <br /> 11.3 Closure Report Preparation . . .. . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . 13 i <br /> 1 <br /> E_ <br />