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I <br /> • TABLE OF CONTENTS r?y <br />' 10 INTRODUCTION .. . .. .. .... . .. . . .-• ---- �::� i <br /> 2 0 SITE BACKGROUND .. .. .. . .. . .... .. .... ..... . . .. <br /> 3 0 QUARTERLY GROUNDWATER MONITORING--APRIL,2000 ... ......... .. .. .... . .. .1 <br /> I <br /> 31 GROUNDWATER MONITORING OBSERVATIONS AND PARAMETERS 2 <br /> 3 2 GROUNDWATER SAMPLING 2 <br /> 4 0 GROUNDWATER MONITORING RESULTS .. .. . . . .. .. .. .. .. .. . ....2 <br /> 41 GROUNDWATER ELEVATION CONTOURS 2 <br /> 42 LABORATORY ANALYSES (TPH-G, BTEX, OXYGENATES/ADDITIVES) 3 <br /> I 5 0 DISCUSSION OF RESULTS ...... .. . . . . . .... . ...... ... . . ... ......... . . ........ ... . ....4 <br /> 5 1 DISCUSSION OF GROUNDWATER ELEVATIONS 4 <br /> 5 2 DISCUSSION OF ANALYTICAL RESULTS 4 <br /> r6 0 RECOMMENDATIONS . ... . . . .. . .. .. . .. ... . .. .. . ... . . ....... . .. 5 <br /> ILIST OF APPENDICES <br /> APPENDIX A <br />�. Figure 1 Vicinity Map <br /> Figure 2 Groundwater Elevation Contour Map—April 18,2000 <br /> Figure 3 Groundwater Analytical Results--April 18 and 19,2000 <br /> I Figure 4 Benzene Iso-concentration Contour Map—April 18 and 19,2000 <br /> Figure 5 MTBE Iso-concentration Contour Map—April 18 and 19, 2000 <br /> Figure 6 Hydrograph and Hydrograph Table <br /> I Figure 7 Benzene and GWE vs Time <br /> Figure 8 Toluene and GWE vs Time <br /> Figure 9 Total Xylenes and GWE vs Time <br /> Figure 10 MTBE and GWE vs Time <br /> APPENDIX B <br /> Table A -Historical Groundwater Analyses (MW-1 through MW-7) <br /> Gi oundwater Monitoring Field Forms (MW-1 through MW-7) <br /> Groundwater Measurement Field Form <br /> APPENDIX C <br /> Certificates of Analyses (MW-1 through MW-7) <br /> Chain-of-Custody <br /> L� <br /> CONDOR <br />