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Cleanup Plan S E C O R ---- <br /> October 27, 2003 <br /> Page i <br /> ' TABLE OF CONTENTS <br /> 1.0 INTRODUCTION........................................................................................................1 <br /> ' 2.0 SITE BACKGROUND ................................................................................................1 <br /> 2.1 Geology......... ......................................................................................................................... 1 <br /> 2.2 Hydrogeology...........................................................................................................................2 <br /> 2.2.1 Groundwater Flow Rates, Directions, Recharge, and Discharge..................................2 <br /> ' 2.2.2 Groundwater Use...........................................................................................................2 <br /> 2.2.3 Extraction Wells Affect on Groundwater Flow...............................................................3 <br /> 2.3 Surface Water..........................................................................................................................3 <br /> ' 2.4 Hydraulic Connection with Aquifers.........................................................................................3 <br /> 2.5 Local Land Use........................................................................................................................3 <br /> 2.6 Previous Investigations and Remedial Actions........................................................................4 <br /> 3.0 NATURE AND EXTENT OF CONTAMINATION........................................................8 <br /> 3.1 Soil Contamination...................................................................................................................8 <br /> 3.2 Groundwater Contamination....................................................................................................9 <br /> ' 4.0 SELECTED REMEDIATION ALTERNATIVE SUMMARY..........................................9 <br /> 4.1 Remedial Objectives................................................................................................................9 <br /> 4.2 Remedial Goals........................................................................................................................9 <br /> 5.0 TREATMENT SYSTEM DESIGN AND IMPLEMENTATION....................................10 <br /> 5.1 Separate Phase Hydrocarbon Removal ................................................................................ 10 <br /> ' 5.2 Limited Excavation................................................................................................................. 10 <br /> 5.2.1 Pre-Construction.......................................................................................................... 10 <br /> 5.2.2 Construction................................................................................................................. 10 <br /> 5.2.3 Waste Management..................................................................................................... 11 <br /> 5.3 Groundwater Oxygenation System........................................................................................ 11 <br /> 5.3.1 Pre-Construction Activities........................................................................................... 11 <br /> 5.3.2 Construction Activities ................................................................................................. 12 <br /> ' 5.3.3 Troubleshooting and Start-up...................................................................................... 12 <br /> 5.3.4 Performance Monitoring .............................................................................................. 12 <br /> 5.3.5 Reporting ..................................................................................................................... 12 <br /> ' 6.0 WORK PLAN FOR GROUNDWATER OXYGENATION POINT INSTALLATION....13 <br /> 6.1 Proposed Scope of Work....................................................................................................... 13 <br /> 6.2 Site Health and Safety Plan................................................................................................... 13 <br /> ' 6.3 Permitting............................................................................................................................... 13 <br /> 6.4 Groundwater Oxygenation Point Installation, Soil Samples, and Analysis............................ 13 <br /> 6.5 Report..................................................................................................................................... 14 <br /> ' 7.0 SCHEDULE..............................................................................................................14 <br /> 8.0 REFERENCES.........................................................................................................14 <br /> • <br /> ' I:\Chevron\1001621\REPORTS\2003\2003-Cleanup Plan\Cleanup Plan.doc <br />