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Former Beacon Station No 12474 June 7,2005 <br /> Stockton,California Results of Additional Groundwater Assessment/CSM <br /> CONTENTS <br /> INTRODUCTION I <br /> SITE DESCRIPTION, LAND AND WATER USE 2 <br /> BACKGROUND 2 <br /> ADDITIONAL SITE INVESTIGATION 3 <br /> RESULTS OF ADDITIONAL GROUNDWATER ASSESSMENT 6 <br /> UPDATED SITE CONCEPTUAL MODEL 6 <br /> CONCLUSIONS AND RECOMMENDATIONS 12 <br /> DISTRIBUTION 13 <br /> LIMITATIONS 14 <br /> FIGURES, TABLES AND GRAPHS <br /> FIGURE 1 SITE VICINITY MAP <br /> FIGURE 2 SITE PLAN <br /> FIGURE 3 GEOLOGIC CROSS SECTION A-A' <br /> FIGURE 4 GEOLOGIC CROSS SECTION B-B' <br /> FIGURE 5 SITE PLAN/GROUNDWATER CONTOUR MAP <br /> • FIGURE 6 DISTRIBUTION OF TPHg IN GROUNDWATER <br /> FIGURE 7 DISTRIBUTION OF BENZENE IN GROUNDWATER <br /> FIGURE 8 APPROXIMATE DISTRIBUTION OF TPHg AND BENZENE IN SOIL <br /> TABLE I SOIL ANLAYTICAL DATA <br /> TABLE 2 HYDROPUNCH GROUNDWATER ANALYTICAL DATA <br /> TABLE 3 GROUNDWATER MONITORING DATA <br /> TPHg CONCENTRATION vs TIME GRAPHS <br /> BENZENE CONCENTRATION vs TIME GRAPHS <br /> APPENDICES <br /> APPENDIX A SJCEHD CORRESPONDENCE AND WELL PERMIT <br /> APPENDIX B FIELD METHODS AND PROCEDURES <br /> APPENDIX C CPT AND MONITORING WELL LOGS <br /> APPENDIX D MONITORING WELL DEVELOPMENT LOGS <br /> APPENDIX E ANALYTICAL REPORTS <br /> APPENDIX F WELL SURVEY REPORT - <br /> APPENDIX G LANDFILL SCALE TICKETS <br /> APPENDIX H WELL SEARCH DATA <br /> AddtnlG Wassmnt tt <br /> Project No 1474 15 HORIZON ENVIRONMENTAL INC. <br />