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[On-Post Quarterly GW Reports]

Final June 2003 On-Post Quarterly Groundwater Monitoring Report, September 1993

Table of Contents

1.0 - Water Level Measurements

2.0 - Basewide Flow Direction and Gradient

3.0 - Weather Station and Transducer Data

4.0 - June 2003 Analytical Results

4.1   Volatile Organic Compound Results

4.2   Metals Analyses

5.0 - Summary

Appendices

Appendix A   Evaluation of Data Quality Objectives Attainment

Appendix B   June 2003 Quarterly On-Post Groundwater Monitoring Analytical Results

Tables

Table 1-1   Summary of Groundwater Elevations

Table 1-2   Comparison of Groundwater Elevations from  April 2003 to June 2003

Table 3-1   Comparison of CS-MW16-LGR Weather Station Precipitation and Average Overall Groundwater Elevation Change

Table 4-1   June 2003 Quarterly Groundwater Detected Concentrations


Figures

Figure 2-1   June 2003 Potentiometric Surface Map

Figure 2-2   June 2003 Potentiometric Surface Map for the LGR Screened Wells near Building 90

Figure 2-3   June 2003 Potentiometric Surface Map for the CC Screened Wells near Building 90

Figure 2-4   Groundwater Elevations for Wells CS-MW6-LGR/BS/CC

Figure 3-1   Well CS-MW16-LGR Groundwater Elevation and Precipitation Data

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

Figure 3-3   Wells CS-MW16-LGR and CS-MW4-LGR Groundwater Elevation and Precipitation Data, June 2003

Figure 4-1   Well CS-MW16-LGR PCE and TCE Concentrations since 1991

Figure 4-2  Well CS-MW16-LGR Concentrations for Selected Analytes since 1998

Figure 4-3   Well CS-D PCE and TCE Concentrations since 1991

Figure 4-4   Well CS-D Concentrations for Selected Analytes since 2000

Figure 4-5   Well CS-MW1-LGR PCE and TCE Concentrations since 1998

Figure 4-6   Well CS-MW2-LGR PCE and TCE Concentrations since 1998

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