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Quarterly Report - Fourth Quarter 2004 <br /> FLAG CITY CHEVRON <br /> 6421 Capitol Avenue, Lodi, California <br /> TABLE OF CONTENTS <br /> SECTION PAGE <br /> 1.0. INTRODUCTION AND SCOPE OF WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 2.0. GROUND WATER MONITORING AND SAMPLING . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 21 WELL MONITORING AND PURGE PROCEDURES 2 <br /> 22 GROUND WATER SAMPLING 2 <br /> 23 LABORATORY ANALYSIS OF GROUND WATER SAMPLES 3 <br /> 24 FINDINGS 3 <br /> 2 4 1 Ground Water Elevation and Gradient 3 <br /> 2 4 1 1 First Zone Aquifer 4 <br /> 2 4 1 2 Second Zone Aquifer 4 <br /> 2 4 1 3 Secondga Aquifer Zone 4 <br /> 2 4 1 4 Primary Aquifer Zone 4 <br /> 2 4 2 Laboratory Results of Ground Water Samples 4 <br /> 3.0. SUMMARY OF FINDINGS FROM QUARTERLY ACTIVITIES . . . . . . . . . . . . . . 5 <br /> 4 0. CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 5.0 RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S <br /> 6.0 LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 <br /> FIGURES <br /> Figure 1 -Location Map <br /> Figure 2 - Site Map <br /> Figure 3 - Vertical Gradient Cross Section GC' December 2004 <br /> Figure 4 - First Zone Aquifer Ground Water Elevation Map December 2004 <br /> Figure 5 - Second Zone Aquifer Ground Water Elevation Map December 2004 <br /> Figure 6 - Secondary Aquifer Zone Ground Water Elevation Map December 2004 <br /> Figure 7 -Primary Aquifer Zone Ground Water Elevation Map December 2004 <br /> Figure 8 Estimated Extent of First Zone Dissolved MTBE December 2004 <br /> Figure 9 -Estimated Extent of Second Zone Dissolved MTBE December 2004 <br /> Figure 10 -Dissolved MTBE-Impact Cross Section C- C' December 2004 <br /> Advanced GeoEnvironmental,Inc <br />