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' Report Sod and Groundwater Livesttgation <br /> iSt b s Car Wash <br /> 6120 Pacific <br /> St Stockton CA <br />' June 12 <br /> Page 5- <br /> S- <br /> TABLE 1 <br />' OVA-PID Readings <br /> Soil Boring SB-1 <br /> Depth Soil Sample Simulprobe <br /> OVA-PID (ppm) OVA-PID (ppm) <br /> 5 5 NA <br />' 10 510 NA <br /> 15 5 0 <br /> 20 10 NA <br /> 25 40 NA <br /> 30 100 1,050 <br />' 35 150 NA <br /> 40 550 NA <br />' Soil Boring SB-2 <br /> Depth Soil Sample Simulprobe <br /> OVA-PID (ppm) OVA-PID (ppm) <br /> 5 0 NA <br /> 10 0 NA <br /> 15 0 10 <br /> 20 0 NA <br /> 26 150 2,000+ <br /> 30 2,000+ NA <br /> 35 2,000+ 2,000+ <br /> 40 2,000+ NA <br /> 4 3 LABORATORY ANALYSIS <br /> 4.3 1 Soil Samples <br /> 1 A total of seven soil samples were retained from each boring for laboratory analysis Soil samples were <br />' collected at 15, 25, 30, 35, 40, 55, and 70 feet bgs from SB-1 The laboratory analyses indicated soil <br /> sample collected from vadose zone in SBA had increasing levels of BTEX from 25 feet to the water <br /> table The laboratory analysis of the soil sample collected from 15 feet indicated that BTEX, MTBE, and <br /> TPH-G were not detected at or above the laboratory reported detection limits Benzene increased from <br /> 10 gg/kg to 1,200 µg/kg, and MTBE ranged from 950µg/kg to 25,000pg/kg, in the samples collected <br /> from between 25 and 40 feet The soil sample collected below the water table at 55 feet from SB-1 has <br /> the highest levels of BTEX, TPH-G, and MTBE rhe sample collected fj oin 70 feet indicates that BTEX <br /> and MTBE are still present at 30 feet below the current water table TPH-G was not detected at an <br /> t, CONDOR <br />