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SUBSURFACE INVESTIGATION REPORT <br /> Beacon Station No. 502 <br /> 35 North Cherokee Lane <br /> Lodi, California <br /> Delta Project No. 40-92-813 <br /> Page 3 <br />' TABLE 1-Continued <br />' Soil Sample Analytical Results <br /> April 29, 1993 <br /> Concentrations in parts per million (ppm) <br />' Soil Ethyl- Organic <br /> Boring Depth ft Benzene' Toluene' benzenes Xylenes' 1PH2 TPHdc Lead <br />' SB-3 15 <0.50 0.53 6.7 95 1,100 31 <br /> <2.0d 8.od 22d 390d,e <br /> 170d,f <br />' 20 <0.0050 <0.0050 0.0060 0.23d a 3.3 <1.0 <br /> <0.02d <0.02d <0.02d 0.07 ' <br /> 0.063d,f <br /> 25 <0.0050 <0.0050 <0.0050 <0.0050 <0.50 <br /> 30 <0.0050 <0.0050 <0.0050 <0.0050 <0.50 <1.0 <br /> 40 <0.0050 <0.0050 <0.0050 <0.0050 <0.50 <1.0 <br /> 45 <0.0050 <0.0050 <0.0050 <0.0050 <0.50 <1.0 <br /> 50 <0.0050 <0.0050 <0.0050 <0.0050 <0.50 <1.0 <br /> Stockpile - <0.0050 <0.0050 <0.0050 0.0096 0.64 <1.0 <0.005 <br /> ' Analyses by EPA Method 8020/Purge and Trap, except as noted. <br /> b Total petroleum hydrocarbons as gasoline by EPA Method 8015/Purge and Trap. <br /> c Total petroleum hydrocarbons as diesel by EPA Method 8015/Extraction. <br /> d Analyses by EPA Method 8240. <br /> e P,M-Xylene. <br /> f O-Xylene. <br /> Soil samples collected from soil borings S13-1 and SB-2 did not contain detectable concentrations of <br /> petroleum hydrocarbons. The soil samples collected from soil boring S13-3 at depths of 15 and 20 feet <br /> contained TPH as gasoline at concentrations of 1,100 and 3.3 parts per million, respectively, and also <br />' contained relatively low to non-detectable concentrations of TPH as diesel and BTEX constituents. Soil <br /> samples collected from soil boring SB-3 at depths of 25 feet or greater did not contain detectable <br />' concentrations of petroleum hydrocarbons. <br />' RPT 103.SJH <br />