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Estlutated Muss of Petroleum Hydrocarbons Conahtuents Remmnuig in Groundn Ater <br /> Colber Boat Works,401 North Stockton Street Stockton,California <br /> Page S <br /> . FIGURES: <br /> FIGURE 1 LOCATION MAP <br /> FIGURE 2 SITE PLAN MAP <br /> FIGURE 3 GROUNDWATER CONTOUR MAP <br /> OCTOBER 21, 1999 <br /> FIGURE 4 TPHg ISOCONCENTRATION MAP <br /> SEPTEMBER 29, 1999 <br /> FIGURE 5 BENZENE ISOCONCENTRATION MAP <br /> SEPTEMBER 29, 1999 <br /> FIGURE 6 MTBE ISOCONCENTRATION MAP <br /> SEPTEMBER 29, 1999 <br /> TABLES <br /> TABLE 1 SOIL ANALYTICAL RESULTS <br /> TABLE 2 GROUNDWATER ELEVATION DATA <br /> TABLE 3 GROUNDWATER ANALYTICAL RESULTS <br /> TABLE 4 ESTIMATED MASS OF TPH-G REMAINING <br /> IN GROUNDWATER <br /> TABLE 5 ESTIMATED MASS OF BENZENE REMAINING ` <br /> IN GROUNDWATER <br /> TABLE 6 ESTIMATED MASS OF MTBE REMAINING <br /> IN GROUNDWATER <br /> APPENDIX: <br /> APPENDIX A SAN JOAQUIN ENVIRONMENTAL <br /> ` HEALTH DIVISION RESPONSE LETTER <br /> APPENDIX B APEX STANDARD OPERATING PROCEDURES <br /> APPENDIX C SOIL BORING LOGS <br /> APPENDIX D LABORATORY ANALYTICAL REPORTS AND <br /> . CHAIN-OF-CUSTODY FORMS <br />