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GeoStrate9 ies Inc. <br /> UNOCAL Corporation <br /> December 15, 1993 <br /> Page 6 <br /> DISCUSSION <br /> Weathered petroleum hydrocarbons were detected in the area of the old <br /> UST and former product island to a depth of 31 5 feet bgs TPH-Gasoline <br /> concentrations in this area ranged from 1 ,600 to 2,900 ppm Toluene, <br /> ethylbenzene and xylenes concentrations were relatively low Benzene was <br /> not detected Based on these data, additional delineation of soil <br /> contamination will be required <br /> If you have questions, please call <br /> .� AFD <br /> GeoStrategies Inc by, �S EREDJ. <br /> Cb <br /> No.5577 <br /> Stephen J Carter N <br /> Project Manager 9 D%- <br /> R G 5577 �OP CAt1F <br /> Plate 1 Vicinity Map <br /> Plate 2 Site Plan <br /> Appendix A GSI Field Methods and Procedures <br /> Appendix B Exploratory Boring Logs <br /> Appendix C Analytical Laboratory Report and Chain-of-Custody Form <br /> OC Review <br /> 782702-3 <br />