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16 Jonas & Associates Inc <br /> ' TABLE OF CONTENTS(continued) <br /> PAGE <br /> 3 2 2 BTEX - 1988 Analytical Results 11 <br /> ' 3 2 3 EDB, 1,2-DCA and PAHs - 1988 Analytical Results 11 <br /> 3 2 4 Lead - 1988 Analytical Results 11 <br /> ' <br /> 33 1989 through 1995 Groundwater Investigations 11 <br /> 34 Mass Balance Calculation 12 <br /> ' 4.0 REGIONAL AND LOCAL HYDROGEOLOGY 12 <br /> 41 Regional and Site Geology and Hydrogeology 12 <br /> 42 Beneficial Uses of Groundwater 13 <br /> ' 5.0 REMEDIATION ACTIVITIES 13 <br /> 6.0 REMEDIATION EFFECTIVENESS AND COUNTY CLOSURE 14 <br /> REFERENCES 15 <br /> LIST OF FIGURES - Appendix A <br /> ' Figure I-1 Tracy Service Center - Location Map <br /> Figure 1-2 Tracy Service Center Site Plan <br /> Figure 3-1 Observation Well and Soil Boring Locations - Tracy Service Center <br /> ' Underground Tank Investigation <br /> Figure 3-2 Soil Vapor Survey Sampling Point Locations - Tracy Service Center <br /> Underground Tank Investigation <br /> ' Figure 3-3 Relative Potentiometric Contour Elevations Estimated for Tracy Service <br /> Center, January 11, 1988 <br /> Figure 3-4 Relative Potentiometric Contour Elevation Estimated for Tracy Service <br /> Center, February 26, 1988 <br /> Figure 3-5 TPH Isoconcentration Lines Estimated for Soils - Tracy Service Center <br /> Underground Tank Investigation, February 1988 <br /> Figure 3-6 TPH Isoconcentration Lines Estimated for Groundwater- Tracy Service <br /> Center Underground Tank Investigation, February 1988 <br /> Figure 3-7 Groundwater Elevation Contour Map, Fourth Quarter 1995 <br /> ' ii <br />