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PAGE <br /> a QUARTERLY MONITORING REPORT 2of58 <br /> • QUARTER DATE <br /> First Quarter 2006 2"un-2006 <br /> Table of Contents <br /> 10 Introduction 4 <br /> 1 1 Scope of Work 4 <br /> 1 2 Monitoring Activities Performed 4 <br /> 20 Site 4 <br /> 21 Description 4 <br /> 30 Geology 4 <br /> 31 Description 4 <br /> 40 Hydrogeology 5 <br /> 41 Description 5 <br /> 50 Results 5 <br /> 51 Groundwater Level Measurements 5 <br /> 52 Groundwater Sample Analysis 5 <br /> 53 Free Product 6 <br /> 60 Discussion 6 <br /> 61 Conclusions 6 <br /> 62 Data Anomalies 7 <br /> 63 Variations from Sampling Procedures 7 <br /> 0 <br /> 64 Well Conditions and Appearance of Purged Water 7 <br /> 65 Management of Purge Water 7 <br /> 66 Recommendations 7 <br /> 70 Remarks and Signatures 8 <br /> Tables and Figures <br /> Table 1 Groundwater Elevations 9 <br /> Table 2 Analytical Results 13 <br /> Table 3 Floating Oil Removal 19 <br /> Figure 1 Regional Location Map 20 <br /> Figure 2 USGS Quadrangle Location Map 21 <br /> Figure 3 Primary Site Map 22 <br /> Figure 4 Groundwater Elevation Contours and Flow Direction(s) 23 <br /> Figure 5 Depth to Water Elevations 24 <br /> Figure 6 TPH-Diesel Present in MW-1 25 <br /> Figure 7 TPH-Gasoline Present in MW-4 26 <br /> Figure 8 Water Elevation vs Oil Removal in MW-2 27 <br /> Figure 9 Water Elevation vs TPH-Diesel Concentration in MW-1 28 <br /> Figure 10 Water Elevation vs TPH-Gasoline Concentration in MW-4 29 <br /> CONFIDENTIAL <br />