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i � Report—Vapor Extraction/Air Sparge Remedial System Page 6 <br /> Former Bank of Stockton/Western Lift Site <br /> Project No. 102.3 <br /> i ' March 25, 2005 <br /> Compound TPH-G Benzene Toluene Ethyl Xylene <br /> Benzene <br /> Detection Limit 1.0 3.0 3.0 3.0 3.0 <br /> Units mg/kg ug/kg µg/kg µgkg lag/kg <br /> The laboratory data sheets showing the analytical results are attached in Appendix A. <br /> 3.3 Soil Sample Analytical Results <br /> 1 The soil analytical results are summarized in Summary Table 1. In general, elevated <br /> concentrations of gasoline range petroleum hydrocarbons and BTEX compound are <br /> ' present from the approximate level of first groundwater (about 30 feet bgs) and extending <br /> downward to about 50 feet. Below 45 feet the concentrations generally decrease <br /> markedly. <br /> 1 <br /> 1 2937 Veneman Ave., #B240 Geo-Phase Environmental Inc. Phone(209) 569-0293 <br /> Modesto, CA 95356 Fax(209)569-0295 <br />