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1� <br /> Supplemental Investigation Report,Problem Assessment Report and Work Plan <br /> Cleanup and Abatement Order No_5-00-707 EAI Prosect No 1232 <br /> TABLE OF CONTENTS <br /> Page <br /> ' 1.0 INTRODUCTION........................................................................................... 1 <br />' 2.0 BACKGROUND INFORMATION................................................................ 2 <br /> 2 1 Delta College —Robinhood Irrigation Well (RIW) 2 <br /> 22 Wards Site 3 <br /> ' 2 2 1 Removal ofUSTs 3 <br /> 2 2 2 Assessments 3 <br /> 2 2 3 Remediation 5 <br /> 2 2 4 Ground Water Monitoring 6 <br /> 23 Unocal Site 6 <br /> 2 3 1 Removal of USTs 6 <br /> 2 3 2 Assessment/Remediation 6 <br /> 2 3 3 Ground Water Monitoring 8 <br /> 24 Commingled Plume 8 <br />' 3.0 GEOLOGY AND HYDROGEOLOGY <br />' 3 1 Regional 9 <br /> 32 Site Specific 9 <br /> 4.0 EXTENT OF IMPACT....... ..... ..................................................................... 10 <br /> 41 Soil 10 <br /> 42 Ground Water 10 <br /> 4 2 1 Flow Direction and Magnitude 10 <br /> 4 2 2 Elevation Contour Maps 11 <br /> 4 2 3 Shallow and Deep Monitoring Well Hydrographs 11 <br /> 4 2 4 Extent of Impact 11 <br /> 43 Robinhood Irrigation Well 12 <br />' 5.0 FIELD SAMPLING PLAN....... ..................................................................... 13 <br /> 5 1 Unocal Site 13 <br /> 5 1 1 Drilling and Soil Sampling 13 <br />' 5 1 2 Ground Water Monitoring Wells 14 <br /> 5 1 3 Equipment Cleaning Protocol 15 <br /> 5 2 Robinhood Irrigation Well 15 <br /> 5 3 Analytical Testing 16 <br /> 54 Sample Containers and Preservatives 16 <br /> 5 5 Sample Identification, Documentation, Packaging and Shipping 16 <br /> p <br /> 56 Field Log Book 1'; <br />® <br /> 57 Photographs 18 <br /> 5 8 Management of Wastes 18 <br /> 59 Quality Assurance/Quality Control 18 <br /> 5 10 Health and Safety Plan 18 <br /> 9S 1232P IRW_WFTOC <br /> ENVIRONMENTAL AUDIT, INC., <br /> 1 <br />