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' S E C 0 R <br /> • = y <br /> qF <br /> ' TABLE OF CONTENTS (Continued) x <br /> ,ry <br /> 5 3 2 B Monitoring Zone Trends 15 Y' <br /> ' 5 3 3 C Monitoring Zone Trends 15 <br /> 6 0 ARCO STATION 4932, 16 EAST HARDING WAY, STOCKTON 16 5 Y <br /> 61 Soil Vapor and Groundwater Extraction 16A <br /> ' 6 1 1 Soil Vapor Extraction 16 ; <br /> 6 1 2 Groundwater Extraction System 16 a; <br /> 6 1 3 Groundwater Batch Extraction 16 } <br /> 1 . . , . <br /> 6 1 4 Off-Site Ozone Sparge System 16 <br /> 7 0 CONCLUSIONS . .. 17 <br /> 8 0 REFERENCES , , . ...,,... 19 <br /> 9.0 LIMITATION .. . . 20 <br /> LIST OF FIGURES <br /> Figure 1 Site Location Map <br /> Figure 2 Site Plan <br /> ' Figure 3 Sensitive Receptor Map <br /> Figure 4 Generalized Geologic Cross Section A-A' and B-B' f <br /> Figure 5 Groundwater Elevation Contour Map A Monitoring Zone—April 12-15, 2005 <br /> . Figure 6 Groundwater Elevation Contour Map B Monitoring Zone—April 12-15, 2005 <br /> 1 � <br /> Figure 7 Groundwater Elevation Contour Map C Monitoring Zone—April 20, 2005 <br /> Figure 8 TPHg Isoconcentration Map A Monitoring Zone—April 12-15, 2005 <br /> Figure 9 TPHg Isoconcentration Map B Monitoring Zone—April 12-15, 2005 <br /> ' Figure 10 TPHg Isoconcentration Map C Monitoring Zone—April 12-15, 2005 <br /> Figure 11 Benzene Isoconcentration Map A Monitoring Zone —April 12-15, 2005 <br /> Figure 12 Benzene Isoconcentration Map B Monitoring Zone—April 12-15, 2005 <br /> ' Figure 13 Benzene Isoconcentration Map C Monitoring Zone —April 20, 2005 <br /> Figure 14 MtBE Isoconcentration Map A Monitoring Zone—April 12-15, 2005 <br /> Figure 15 MtBE Isoconcentration Map B Monitoring Zone—April 12-15, 2005 # <br /> Figure 16 MtBE Isoconcentration Map C Monitoring Zone—April 12-15, 2005 <br /> Figure 17 1,2-DCA Isoconcentration Map A Monitoring Zone —April 12-15, 2005 <br /> Figure 18 1,2-DCA Isoconcentration Map B Monitoring Zone —April 12-15, 2005 <br /> ' Figure 19 1,2-DCA Isoconcentration Map C Monitoring Zone —April 20, 2005 F <br /> Figure 20 Site Conceptual Model <br /> Figure 21 Exposure Pathway Model <br /> LIST OF TABLES <br /> ' Table 1 Soil Boring and Well Construction Details <br /> Table 2 Historical Soil Analytical Data <br /> ' Table 3 Historical Groundwater Monitoring Data and Analytical Results " <br /> . Table 4 Historical Groundwater Gradient Data <br /> Table 5 Vertical Assessment—Soil Analytical Data <br /> ro <br /> ' Table 6 Vertical Assessment—Groundwater Analytical Data 1. <br /> Updated SCM 2005 doc II <br /> 77CP 64409 05 0005 <br /> 1 <br />