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FORMER AMERICAN FOREST PRODUCTS FACILITY Table of Contents { Additional 1,2-DCA Investigation and Site Conceptual Model February 2005 And Second Quarter 2004 Quarterly Monitoring Report Page i � s t: TABLE OF CONTENTS 1.0 INTRODUCTION .-------•--- .-----•........................................................................................1-1 1.1 BACKGROUND.............................................................................................................1-1 1.2 PURPOSE AND SCOPE.........................................................•.---...................................1-2 1.3 REPORT FORMAT.........................................................................................................1-2 2.0 FIELD ACTIVITIES.......................................................................................... ---- ...2-1 2.1 MONITORING WELL INSTALLATION......................................................................2-1 2.2 GROUNDWATER MONITORING................................................................................2-1 2.2.1 Groundwater Monitoring Field Methods............................................................2-2 2.2.2 Laboratory Analysis and Data Validation...........................................................2-2 3.0 SOIL ANALYTICAL RESULTS...........................................................................................----..3-1 = 4.0 SITE CONCEPTUAL MODEL..................... 4-1 F 4.1 SITE GEOLOGY.............................................................................................................4-1 4.2 GROUNDWATER ELEVATION AND GRADIENT....................................................4-1 4.3 GROUNDWATER ANALYTICAL RESULTS.............................................................4-2 4.3.1 TPH-D.................................................................................................................4-2 4.3.2 Volatiles and Oxygenates by EPA Method 8260B.............................................4-2 4.3.3 Lateral Distribution of 1,2-DCA with Time ..4-2 5.0 CONCLUSIONS AND RECOMMENDATIONS .......................................................................5-1 I5.1 CONCLUSIONS..............................................................................................................5-1 5.2 RECOMMENDATIONS .....5-1 6.0 REFERENCES ............................................................ .....6-1 j APPENDICES 3 Appendix A Boring Logs and Well Completion Diagrams Appendix B Field Record of Water Sample and Chain-of-Custody Forms Appendix C Data Validation Summary and Analytical Laboratory Reports Appendix D Graphs of Groundwater Elevations in Monitoring Wells Versus Time �I f � , i KAWprocess1227361American ForesAWell Installation Report rev0l.doc