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w 1101�" 'r 4 R V � TABLE OF CONTENTS 1.0 INTRODUCTION . .. . . .. . . . . . . . . .. .. . . . .. . ... .. .. . . ... . . . . .. . . . .. . . . ... . . . .. . 1 2.0 BACKGROUND .. .. . ..... .. .. . .. ... .. .. ... . . .. .. .. . .. .. .. . . . .. .. . .. .. . ... . . 1 3.0 ADDITIONAL ASSESSMENT WORK . ... . .... . . ............. .. .. . . . .. .. . ...... .... 1 3.1 SITE-SPECIFIC HEALTH AND SAFETY PLAN/BACKGROUND REVIEW/PERMITTING . .. . 1 3.2 SOIL BORINGS/SAMPLING .. . . .. .. ...... . ... . .... ... .. . .. .. ... ... . .. .. . 2 3.3 WELL INSTALLATION/DEVELOPMENT .. ... . . .. ... . .... . .. . . . .. . . . .. ... ... . . 2 3.4 GROUND1VATER MONITORING AND SAMPLING . . . . .. .. . .... . . ..... . ..... .... 3 4.0 SITE CONDITIONS. . . .. .... .. . . .. .. .. .... . . . . . ... ..... .... . . . ... .. .. .. . ... .. . 3 4.1 HYDROGEOLOGY . .. .. .... . . . .. .. ... . . .. ... . .... . .. . . . .. .. . .. .... .. .. . 3 4.2 RESULTS OF SOIL ANALYSES.. .... .. ... . ... . . ....... .. . .. .. ..... . . . ... . . 4 4.3 RESULTS OF GROUNDWATER MONITORING AND ANALYSES .. . .. .. . . . .. .... .. . . 4 5.0 CONCLUSIONS . ... . .. . . .. .. . ... . .. . .. .... . . . . .. . . .. . . . .. . . .. . . . . .. .. . ... . . . 5 LIST OF FIGURES i FIGURE i -SITE LOCATION MAP FIGURE 2-POTENTIOMETRIC SURFACE MAP, MARCH 11, 1992 FIGURE 3-POTENTIOMETRIC SURFACE MAP,MARCH 17, 1992 FIGURE 4 -DISSOLVED TPH-G CONCENTRATION MAP, MARCH 17, 1992 FIGURE 5-DISSOLVED BENZENE CONCENTRATION MAP, MARCH 17, 1992 LIST OF TABLES TABLE 1 -HISTORICAL GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA TABLE 2-RESULTS OF SOIL SAMPLE ANALYSES APPENDICES APPENDIX A-DRILLING LOGS AND WELL CONSTRUCTION SPECIFICATIONS APPENDIX B-GROUNDWATER SAMPLING FIELD ME"SUREMENTS APPENDIX C-LABORATORY REPORTS AND CHAIN-OF-CUSTODY REPORTS I LJL�_LTJ CRpIINptiSATk:R TECHNOLOGY,INC22at5uMY,RRr