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TRe MEETING -3- 29 Jamary 1997 <br /> 900 SOUTH CHEROKEE LANE,LODI <br /> SAN JOAQUIN COUNTY <br /> SOIL CONTAM NATION SL M04ARY <br /> Prior to vapor extraction, the following are the highest concentrations of gasoline and diesel detected at <br /> various depths(See Soil Layers, Figure F, and Extent of Diesel and Gasoline in Soil,Figures H and n: <br /> DEPTH( ) TPH¢tgg" TPHd(m g) <br /> 0- 5 720 370 <br /> 6- 10 15,000 11,000 <br /> 11 - 15 2900 5700 <br /> 16 - 20 6500 3100 <br /> 21 -25 8500 8400 <br /> 26- 30 6200 6000 <br /> 31 - 35 9700 26,000 <br /> 36 -40 10,000 23,000 <br /> 41 -45 470 1300 <br /> 46- 50 3000 4800 <br /> 51 - 55 290 4400 <br /> 56- 60 2500 5400 <br /> 61 - 65 2300 6900 <br /> 66-70 120 1500 <br /> After vapor extraction, the following are the highest concentrations detected in six confirmation borings <br /> (See Soil Layers, Figure G, and Extent of Diesel and Gasoline in Soil, Figures J and K): <br /> 0- 11 NS NS <br /> 11.5 ND 89 <br /> 16.5 6.4 2600 <br /> 21.5 5.2 17,000 <br /> 24.0 5700 540 <br /> 26.5 8.9 4200 <br /> 31.5 680 7200 <br /> 36.5 1600 16,000 <br /> 41.5 75 1600 <br /> 46.5 2.5 150 <br /> 51.5 610 5600 <br /> 56.5 1.9 1300 <br /> 61.5 1400 3 500 <br /> 66.5 3700 3000 <br /> NS -Not Sampled <br /> ND -Not Detected <br />