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TABLE 2 <br /> Analytical Results Of Soil Vapor Samples - EPA Methods 8015/8260B <br /> WELDON CHURCH PROPERTY <br /> 104 West Berverly Place, Tracy, California <br /> (pg/m3) <br /> Sample Sample TPH-g Benzene Toluene Ethylbenzene Xylene MTBE IPA <br /> I.D. Date <br /> V-1 09/16/10 1,020,000 870 1,100 430 1,320 <20 <50 <br /> 03/09/11 3,000 2.1* 2.7* 1.4* 4.8* <1 NA <br /> V-2 09/16/10 1,230,000 680 1,400 410 2,540 <20 <50 <br /> 03/09/11 42,000* 12* 32* 10* 72* <1 NA <br /> V-3 09/16/10 5,150,000 2,700 7,100 2,000 9,400 <20 <50 <br /> 03/09/11 400,000* 240* 950* 240* 950* <1 NA <br /> V-4 09/16/10 270,000 150 550 210 760 <20 <50 <br /> V-5 09/16/10 200,000 190 260 150 470 <20 <50 <br /> V-6 09/16/10 54,000 35 130 120 363 <20 <50 <br /> V-7 09/16/10 54,000 37 150 130 376 <20 <50 <br /> ESL: 10,000 �j 63,000 980 21,000 9,400 _ <br /> CHHSL: -- 36.2 135,000 -- 317,000 4,000 <br /> i <br /> Notes: <br /> Ng/m': micrograms per cubic meter <br /> 3,000* Concentration reported in micrograms per liter(ug/1) <br /> TPH-g: total petroleum hydrocarbons quantified as gasoline <br /> MTBE: methyl tertiary butyl ether <br /> ESL: San Francisco Bay Regional Water Quality Control Board California Environmental Protection Agency Environmental Screening <br /> Level(soil gas)for residential land use. <br /> indicates there is no ESL for the listed constituent <br /> CHHSL: California Human Health Screening Levels(soil gas)for residential land use. <br /> indicates there is no CHHSL for the listed constituent. <br /> Advanced GeoEnsironmentnl,Inc. <br />