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TABLE 1 <br /> Analytical Results Of Air Samples - Methods TO-3/TO-15 <br /> WELDON CHURCH PROPERTY <br /> 104 West Berverly Place, Tracy, California <br /> (NJ/m3) <br /> Sample I.D. Sample TPH-g Benzene Toluene Ethylbenzene Xylene MTBE <br /> Date <br /> Crawl Space-1 05/26/11 680 0.53 5.3 1.2 2.53 <0.66 <br /> Crawl Space-2 09/27/11 120,000 930 8,400 1,300 6,900 <20 <br /> Crawl Space-3 09/27/11 120,000 830 8,600 1,400 7,500 <25 <br /> Ambient-SW 05/26/11 <200 <0.31 0.43 <0.17 <0.51 <0.71 <br /> Ambient-SE 05/26/11 <170 <0.27 0.44 <0.14 <0.43 <0.60 <br /> Ambient-East 09/27/11 250 0.47 1.4 0.26 1.31 <0.58 <br /> Ambient-West 09/27/11 <170 0.44 1.3 0.26 1.28 <0.59 <br /> Field Blank 09/27/11 <100 <0.16 <0.075 <0.087 <0.257 <0.36 <br /> ESL: 10 0.084 63 0.98 21 9.4 <br /> CHHSL: -- 0.084 313 - 730 9.35 <br /> Notes: <br /> pg/m': micrograms per cubic meter <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 <br /> Environmental Screening Level (indoor air)for residential land use. <br /> CHHSL: California Human Health Screening Levels(indoor air)for residential land use. <br /> indicates there is no CHHSL for the listed constituent. <br /> Adimnced GeoEnflronmental,Inc. <br />