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FIGURES Figure 1 Regional Site Location Map of California Figure 2 Regional Site Groundwater Basin Map of California Figure 3 Site Location Map Figure 4 Topographic Map of Site Figure 5 Map of Former USTs Figure 6 Map of Soil Borings and Monitoring Wells Figure 7 Map of Former Hydropunch Locations from 1994 Figure 8 Map of Groundwater Grab Sample Locations at Site Figure 9 Map of Estimated Remaining Petroleum Hydrocarbons in Soil Figure 10 Cross-Section A-A' Figure 11 Cross-Section B-B' Figure 12 3`d Quarter 2016 Groundwater Monitoring Event Data Map Figure 13 Site Conceptual Model Figure 14 Hydrograph of Monitoring Well PT-MW 1 with Benzene, 1,2-DCA and MTBE Concentrations Figure 15 Hydrograph of Monitoring Well PT-MW3 with Benzene, 1,2-DCA and MTBE Concentrations Figure 16 Hydrograph of Monitoring Well PT-MW3 with TPH-gas, 1,2-DCA and MTBE Concentrations Figure 17 Hydrograph of Monitoring Well PT-MW7 with Benzene, TPH-gas, 1,2-DCA and MTBE Concentrations Figure 18 Hydrograph of Monitoring Well PT-MW8 with Benzene, TPH-gas, 1,2-DCA and MTBE Concentrations Figure 19 Hydrograph of Monitoring Well PT-MW9 with Benzene, TPH-gas, 1,2-DCA and MTBE Concentrations Figure 20 Map of Proposed Monitoring Well Locations for PT-MW10, 11 and 12 Figure 21 Monitoring Well Construction Details Figure 22 Schematic of Soil Gas Well Figure 23 Map of Proposed Soil Borings, Shallow Soil Gas Wells and Groundwater Monitoring Wells TABLES Table 1 Unified Soil Classification System Table 2 Tabulation of Historical Soil Borings and Monitoring Wells Table 3 Tabulation of Cumulative Soil Sample Analytical Laboratory Results Table 4 Tabulation of Groundwater Grab Sample Analytical Laboratory Results Table 5 Well Construction Details Table 6 Tabulation of Vertical and Horizontal Coordinates for Monitoring Wells Table 7 Summary of Monitoring Well Sounding Data Table 8 Summary of Individual Monitoring Well Water Sample Analytical Laboratory Results Table 9 Full Scan 8260B Groundwater Sample Analytical Laboratory Results for 3`d Quarter 2016 Table 10 Tabulation of Proposed Soil Boring and Monitoring Well Placement Rationale Table 11 Proposed Analytical Laboratory Test Methods for Soil, Water and Soil Gas Samples APPENDICES Appendix 1 Regulatory Agency Correspondence Appendix 2 Soil Boring and Monitoring Well Logs Appendix 3 Health and Safety Plan Appendix 4 Standard Operating Procedures for Soil Boring and Well Construction Procedures Appendix 5 Groundwater Monitoring, Sampling and Sample Management Procedures Appendix 6 DTSC Shallow Gas Advisory(2012) Appendix 7 SWRCB Low-Threat Underground Storage Tank Case Closure Policy Appendix 8 RWQCB Region 2 Environmental Screening Levels (ESLs) (February, 2016) Parmar\Site Assessment Workplan\02152018.wpd ll