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- --------- ------------- - --------- ----------- <br /> Site Characterization Report: 7500 West Eleventh Street, Tracy, CA. Page ii <br /> 5.0 HYDROCARBONS IN SOIL AND GROUNDWATER........................................ 22 <br /> 5.1 Tank Pit No. I ........................................................................................................22 <br /> 5.2 Tank Pit No. 2........................................................................................................ 23 <br /> 5.3 Dispenser Pit.......................................................................................................... 23 <br /> 5.4 Pipe Trenches......................................................................................................... 24 <br /> 5.4.1 Pipe Trench No. I ........................................................................................... 24 <br /> 5.4.2 Pipe Trench No. 2........................................................................................... 24 <br /> 5.5 Lateral and Vertical Extent of Hydrocarbons in the Subsurface........................... 25 <br /> 5.5.1 Primary Plume of Diesel and Gasoline........................................................... 25 <br /> 5.5.2 Secondary Plume of Diesel and Gasoline....................................................... 30 <br /> �.j 5.5.3 Summary......................................................................................................... 31 <br /> 6.0 CONCLUSIONS............ .......................................................................................... 32 <br /> 7.0 RECOMMENDATIONS.......................................................................................... 34 <br /> 8.0 REFERENCES ......................................................................................................... 35 <br /> ;A <br /> TABLES <br /> Table 1: Results of Analyses of Soil Samples <br /> Table 2: Results of Analyses of Samples of Groundwater <br /> Table 3: Depths to Groundwater <br /> FIGURES <br /> Figure I Site Location <br /> Figure 2 Site Plan <br /> Figure 3 Pit and Trench Locations <br /> Figure 4 Soil Sampling Locations in Tank Pit No. I <br /> Figure 5: Soil Sampling in Pipeline Trench No. I and Dispenser Pit <br /> Figure 6: Soil Sampling in Tank Pit No. 2 <br /> Figure 7 Soil Sampling in Pipeline Trench No. 2 <br /> Figure 8 Groundwater Monitoring Wells and Soil Boring Locations <br /> Figure 9: Groundwater Contours—May 15, 2000 <br /> Figure 10: Cross Section A-A' <br /> Figure 11: Cross Section B-B' <br /> Figure 12: Cross Section C-C' <br /> Figure 13: Extent of Hydrocarbon Affected Soils <br /> Figure 14: Affected Soil in Cross Section A-A' <br /> Figure 15: Affected Soil in Cross Section B-B' <br /> Figure 16: Affected Soil in Cross Section C-C' <br /> APPENDICES <br /> Appendix A. Boring and Well Logs <br /> Appendix B: Laboratory Certificates of Analysis <br /> sic <br />