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' Updated Site Conceptual Model and Second Quarter 2003 Monitoring and Remediation Report <br /> Cleanup and Abatement Order No 5-00-707 EAl Project No 1232 <br /> TABLE OF CONTENTS <br />' Page <br /> 1.0 INTRODUCTION................................................................................................. 1 <br />' 11 Background 1 <br /> I 1 1 Wards Site 1 <br /> 1 1 2 Wards Site Redevelopment 1 <br />' 1 1 3 Unocal Site 1 <br /> 1 1 4 Robinhood lrngatton Well (RIW) 2 <br /> 1 15 Cleanup and Abatement Order 3 <br /> 2.0 SITE CONCEPTUAL MODEL UPDATE.......................................................... 4 <br />' 3.0 GROUND WATER MONITORING.................................. ................................ 5 <br /> 3 1 Ground Water Sampling <br /> 32 Effluent Handling 5 <br />' 33 Analytical Testing 5 <br /> 4.0 REMEDIATION SYSTEM STATUS REPORT ..................... .......................... 6 <br /> 5.0 DISCUSSION................. ................ ..... ................... ..... 7 <br /> .. ........................ ....... ...... <br /> 5 1 Ground Water EIevation Contour Maps 7 <br /> 52 Ground Water Flow Direction and Magnitude 7 <br /> 53 Monitoring Well Hydrographs 7 <br /> 54 TPH-G and Benzene Isoconcentration Maps 7 <br /> 5 5 Analytical Testing Results 8 <br /> 5 5 1 Units A and B Wells 8 <br />' 5 5 2 Units C and D Wells (MW-8D, MW-23S/D and MW-24S/D) 8 <br /> 5 5 3 Perimeter Wells 8 <br />' 6.0 RECOMMENDATIONS...................................................................................... 9 <br /> 7.0 LIMITATION...................................................................... ................................ 10 <br /> t <br /> 1 <br />■ <br /> SHM 1232RO351 -1- <br /> ENVIRONMENTAL AUDIT,INC <br />