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1 <br />' Quarterly Report - Fourth Quarter 2003 <br /> • THREE B'S TRUCK PLAZA <br />' 14749 Thornton Road, Lodi, California <br />' TABLE OF CONTENTS <br /> SECTION PAGE <br />' 1.0. INTRODUCTION AND SCOPE OF WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br />' 2.0. MONITORING AND SAMPLING PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 <br /> 21 WELL MONITORING AND EVACUATION 2 <br /> 22 GROUND WATER SAMPLING 2 <br />' 23 LABORATORY ANALYSIS OF GROUND WATER SAMPLES 3 <br /> 3.0. FINDINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 <br />' 3 1 GROUND WATER ELEVATION AND GRADIENT 3 <br /> 3 1 1 Hydrologic Unit 1 4 <br /> 3 1 2 H,, dr�olo_mc Unit 2 4 <br />' 3 1 3 Hydrologic Unit 3 4 <br /> 3 14 Hydrologic Unit 4 4 <br /> 3 1 5 Hydrologic Unit 6 5 <br /> 32 LABORATORY RESULTS OF MONITORING WELL GROUNDWATER SAMPLES <br /> 5 <br /> 4.0. SUMMARY AND CONCLUSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 <br /> 5.0. RECOMMENDATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> I6.0. LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 <br /> FIGURES <br /> I Figure 1 -Location Map <br /> Figure 2 - Site Plan <br /> Figure 3 - Vertical Gradient Cross Section C-C' 08 December 2003 <br /> IFigure 4 -Inferred Ground Water Elevations Hydrologic Unit 1 <br /> Figure 5 -Inferred Ground Water Elevations Hydrologic Unit 2 <br /> Figure 6 -Inferred Ground Water Elevations Hydrologic Unit 3 <br /> IFigure 7 -Inferred Ground Water Elevations Hydrologic Unit 4 <br /> Figure 8 -Inferred Ground Water Elevations Hydrologic Unit b <br /> Figure 9 -Estimated Extent of Dissolved TPH-g Hydrologic Unit I <br /> IFigure 10 -Estimated Extent of Dissolved TPH-d Hydrologic Unit I <br /> Figure 11 -Estimated Extent of Dissolved MTBE Hydrologic Unit I <br /> Figure 12 -Estimated Extent ofDassolved MTBE Hydrologic Unit 2 <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />