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[On-Post Quarterly GW Reports]

Final June 2002 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 - June 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   June 2002 Quarterly On-Post Groundwater Monitoring Analytical Results

Figures

Figure 2-1   June 2002 Potentiometric Surface Map

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

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

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

Figure 3-2   Well CS-MW9 Cluster Groundwater Elevation and Precipitation Data

Figure 3-3   Wells CS-16 and CS-MW4-LGR Groundwater Elevation and� Precipitation Data, June 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   CSSA Summary of Groundwater Elevations, June 2002

Table 1-2   Summary of Groundwater Elevations by Formation, June 2002

Table 3-1   Comparison of CS-16 Weather Station Precipitation� and Average Overall Groundwater Elevation Change

Table 4-1   June 2002 Quarterly Groundwater Detected Concentrations