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' Updated Site Conceptual Model and First Quarter 2003 Monitoring and Remediation Report <br /> Cleanup and Abatement Order No 5-00-707 EAI Project No 1232 <br /> TABLE OF CONTENTS <br /> Page <br /> 1.0 INTRODUCTION................... ............................................................................. 1 <br /> 11 Background I <br /> 1 1 I Wards Site I <br /> 1 12 Wards Site Redevelopment I <br /> 1 13 Unocal Site 1 <br /> 1 14 Robmhood Irrigation Well (RIW) 2 <br /> 1 15 CIeanup and Abatement Oidei 3 <br />' 2.0 SITE CONCEPTUAL MODEL UPDATE.......................................................... 4 <br /> 3.0 GROUND WATER MONITORING................................................................... 5 <br /> 3 1 Ground Water Sampling 5 <br /> 32 Effluent Handling 5 <br /> 33 Analytical Testing 5 <br /> 4.0 REMEDIATION SYSTEM STATUS REPORT ................................................ 7 <br />' 5.0 DISCUSSION........................................................................................ ............... S <br /> 5 1 Ground Water Elevation Contour Maps 8 <br /> 52 Ground Water Flow Direction and Magnitude 8 <br /> 53 Monitoring Well Hydrographs g <br /> 54 TPH-G and Benzene Isoconcentration Maps g <br />' <br /> 55 Analytical Testing Results 9 <br /> 5 5 1 Units A and B Wells 9 <br /> 5 5 2 Units C and D Wells (MW-$D, MW-23S/D and MW-24S/D) 9 <br />' 5 5 3 Well MW-9 and Other Perimeter Wells 9 <br /> 6.0 RECOMMENDATIONS...................................................................................... 10 <br />' 7.0 LIMITATION................................... ................................................................... 11 <br /> e <br /> BHM 1232RO321 -1- <br /> ENVIRONMENTALA UDIT, INC <br />