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12/02 02 TUE 09 16 FAX 19259469968 ERMWEST WC lih 010 <br /> ' Mr Karlin Knoll <br /> • 15 June 1999 <br /> Page 9 <br /> Compound Location(depth) Concentration PRG <br /> Benzene B-5 2,300 ug/l 1 ug/l <br /> Toluene B-$ 310 ug/I 150 ug/l <br /> Xylenes 'B-5 6,500 ug/i 1,750 ug/1 <br /> The highest concentrations of contaminants in ground water are located <br /> directly beneath the former release location The lateral extent of ground <br /> water contamination has been defined to be in the unmediate vicinity of <br /> the former release location and extending at least twenty-feet down- <br /> gradient <br /> If you have any questions regarding this report, please do not hesitate to <br /> contact me at(925) 946-0455 <br /> Sincerely, <br /> • <br /> John R D-Agostino <br /> Project Manager <br /> JRD/jrd/8187 25 <br /> enclosures. Figure 1 - Site Plan <br /> Figure 2- Site Layout Map <br /> Figure 3- Ground Water Elevation Contour Map <br /> Figure 4- TPH-g Concentrations in Soil j <br /> Figure 5 - Benzene Concentrations in Ground Water <br /> Table 1 -Ground Water Elevations <br /> Table 2-Soil Analytical Results <br /> Table 3 -Ground Water Analytical Results <br /> Appendix A -Soil Baring/Monitoring Well Logs <br /> Appendix B -Laboratory Analytical Data Sheets <br /> cc Mr Joel Strafelda, Union Pacific Railroad Company <br />