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September 2001 On-Post

Quarterly Groundwater Monitoring Report

TABLE OF CONTENTS

1.0  WATER LEVEL MEASUREMENTS

2.0  BASEWIDE FLOW DIRECTION AND GRADIENT

3.0  WELL CS-16 WATER LEVEL AND TRANSDUCER DATA

4.0  SEPTEMBER 2001 ANALYTICAL RESULTS

       4.1 Volatile Organic Compound Analyses

4.2 Metals Analyses

4.3 Cations and Anions Analyses

5.0 SUMMARY

LIST OF APPENDICES

Appendix A�� Summary of Data Quality Objectives Attainment

Appendix B�� September 2001 Quarterly On-Post Analytical Results

Appendix C�� PCE and TCE Concentrations over time in Wells CS-16, CS-D, CS-MW1-LGR, and CS-MW2-LGR

LIST OF FIGURES

Figure 2-1  CSSA Overall Potentiometric Surface Map, September 2001

Figure 2-2  Building 90 LGR Potentiometric Surface Map, September 2001

Figure 2-3  Building 90 CC Potentiometric Surface Map, September 2001

Figure 3  Well CS-16 GW Elevation and Precipitation

LIST OF TABLES

Table 1-1  Summary of Groundwater Elevations

Table 1-2  Average Groundwater Elevation Change

Table 4  September 2001 Analytical Results