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[Groundwater Index]

March 2002 On-Post Quarterly Groundwater Monitoring Report - June 2002

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 - March 2002 Analytical Results

4.1   Volatile Organic Compound Analyses

4.2   Metals Analyses

5.0 - Summary

Appendices

Appendix A   Evaluation of Data Quality Objectives Attainment

Appendix B   Quarterly On-Post Groundwater Monitoring Analytical Results, March 2002

Figures

Figure 2-1   Potentiometric Surface Map, March 2002

Figure 2-2   Potentiometric Surface Map for the LGR Screened Wells Near Building 90, March 2002

Figure 2-3   Potentiometric Surface Map for the CC Screened Wells near Building 90, March 2002

Figure 3-1   Well CS-16 GW Elevation and Precipitation Data

Figure 3-2    Well CS-MW9 GW Elevation and Precipitation Data

Figure 3-3   Well CS-MW4-LGR & CS-16 GW Elevation and Precipitation Data, March 2002

Figure 4-1   Trend Graphs for Well CS-16

Figure 4-2   Trend Graphs for Well CS-D

Figure 4-3   Trend Graphs for Well CS-MW1-LGR and CS-MW2-LGR

Figure 5-1   Concentrations of Tetrachloroethene in Selected Wells

Figure 5-2   Concentrations of Trichloroethene in Selected Wells

Figure 5-3   Concentrations of cis-1,2-Dichloroethene in Selected Wells

Tables

Table 1-1   Summary of Groundwater Elevations

Table 1-2   Summary of Groundwater Elevations by Formation

Table 3-1   Comparison of CS-16 Weather Station Precipitation and Overall Groundwater Elevation Change, per Quarter

Table 4-1   March 2002 Detections

Table A-1   Evaluation of Data Quality Objectives Attainment