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�•y TABLE OF CONTENTS <br /> EXECUTIVE SUMMARY PAGE <br /> W" 1.0 INTRODUC."IION . . . . . . . . . •. . . . . . . . . . . • . . . . . . . . . . .. . . . . . . . . . . • . . . . . . . 1 <br /> 1.1 SITE DESCRIPTION . . . . . . . . . . . .. . . . .. . . . • . 2 <br /> 1.2 SITE HISTORY . . . . . . . . . .. . . . . . . <br /> 2 <br /> 2.0 PREVIOUS INVESTIGATIONS 2 <br /> { 2.1 PRELIMINARY UST INVESTIGATION . . . 3 <br /> �. 2.2 CONTAMINATION ASSESSMENT . <br /> 2.3 QUARTERLY GROUNDWATER MONTTORING AND SAMPLING : ; ;: : : 5 <br /> 2.4 VAPOR EXTRACTION PILOT TEST <br /> . . . . . . . <br /> b <br /> 3.0 ADDITIONAL ASSESSMENT . . . . . . . . . . . . . <br /> „i 8 <br /> L ASSESSMENT PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . <br /> 3.1 <br /> ADDITIONAL 9 <br /> 3.1.1 Drilling and Subsurface Soil Sampling . • • . <br /> 3.1.2 Groundwater Monitoring and Vapor Extraction Test Well 10 <br /> Construction1 t <br /> 3.1.3 Groundwater Monitoring Well Development <br /> 11 <br /> Groundwater Sampling . • • • • • •• • • • • • ' • • • ' 11 <br /> 3.1.4 . . . .. . . . . . . . . . . <br /> . . . . . . . <br /> 1 3.1.5 Soil Vapor Monitoring . • • • • • • • 12 <br /> 3.1.6 Sampling Care and Handling <br /> 12 <br /> 3.1.7 Equipment Decontamination Procedures . . .. ... . . ... .. . . . . . . . 13 <br /> 3.1.8 Boring Abandonment . . • • • • S . 13 <br /> 3.2 ANALYTICAL CHEMISTRY PROCEDUR <br /> 3.3 ANALYTICAL CHEMISTRY RESULTS . . . . . 15 <br /> 3.3.1 Soil Analytical Test Results . . . .. . . •• • • • •• • • • • . • • 15 <br /> 3.3.2 Groundwater Analytical Test Results . . . .. . . - 16 <br /> 3.4 HYDROCARBON DISTRIBUTION • • • . • . . . . . . . . . . . . . * ' ' * * ' 16 <br /> 3.4.3 Distribution of Hydrocarbons in the Soil . . <br /> 3.4.2 Distribution of Dissolved Hydrocarbons in the Groundwater . . . . . . 17 <br /> 17 <br /> 4.0 INITIAL REMEDIAL ACTIONS . . . . . . . . . . . • <br /> 5.0 CONCEPTUAL REMEDIAL SYSTEM DESIGN 18 <br /> y 5.1 DESIGN APPROACH . . .. • . . . . 18 <br /> 5.2 VAPOR EXTRACTION RATIONALE . . . . . . . . . . . . . . . . .. . . . . 19 <br /> 5.3 VAPOR EXTRACTION SYSTEM . . • . . . . . . . . . . . . . . . . . 20 <br /> 5.4 THERMAL OXIDATION UNIT . . • . . 20 <br /> 5.4.1 Regenerative Oxidation Process . . . . . . . . • . . . . . . . . . 21 <br /> 5.4.2 fan, Motor, and Drive . . . . . . • 21 <br /> 5.4.3 1 seat Transfer Media . . . . . . . . ' 21 <br /> 5.4.4 Bed Casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 . . . . . • . 22 <br /> 5.4.5 Inlet and Outlet Plenums . . . . . . . . . . . . . . . . . . . . . . . . 22 <br /> 5.4,6 13w*d Casing Insulation . . . . • , . . . . . . . • • . . . . 22 <br /> -- - —- <br /> 5,4,7-_Casing Access openings <br />