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TABLE 4 <br />Analytical Results of Soil Vapor Samples - EPA Methods 8015M/8260 <br />OCAMPO PROPERTY - 821 South Wilson Way, Stockton, California <br />Sample ID Sample TPH-g TPH-g Benzene <br />Date (pg/l) (pg/l) (pg/l) <br /> <br />08/05/10 <50 <0.5 <br /> <br />08/10/10 <50 <0.5 <br /> <br />09/08/10 <50 <0.5 <br /> <br />10/04/10 <50 <0.5 <br /> <br />11/08/10 <50 <0.5 <br /> <br />12/09/10 <50 <0.5 <br /> <br />01/03/11 <50 <0.5 <br /> <br />02/21/11 <50 <0.5 <br /> <br />03/07/11 <50 <0.5 <br /> <br />04/04/11 <50 <0.5 <br /> <br />05/02/11 <50 <0.5 <br /> <br />Effluent 06/06/11 <50 <0.5 <br /> <br />07/11/11 <50 <0.5 <br /> <br />08/09/11 <50 <0.5 <br /> <br />10/20/11 <50 <0.5 <br /> <br />12/19/11 <50 <0.5 <br /> <br />12/20/11 <50 <0.5 <br /> <br />12/21/11 <50 <0.5 <br /> <br />12/22/11 <50 <0.5 <br /> <br />03/16/12 <50 <0.5 <br /> <br />04/10/12 450 108 23 <br /> <br />04/13/12 <50 <0.5 <br /> <br />05/16/12 <50 <0.5 <br /> <br />pg/I: micrograms per liter <br /> <br />ppmv: parts per million volume, based on a gasoline molecular weight of 100 mole <br /> <br />TPH-g: total petroleum hydrocarbons quantified as gasoline <br /> <br />MTBE: methyl-tert butyl ether <br /> <br />C: less than laboratory reporting limit <br />Toluene <br />(ug/1) <br />Ethylbenzene <br />(pg/l) <br />Xylenes <br />(pg/l) <br />MTBE <br />(pg/1) <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <1 <0.5 <br /><0.5 <0.5 <0.5 <0.5 <br />10 1.2 6.7 <0.5 <br /><0.5 <.6 <1 <0.5 <br /><0.5 <.5 <1 <0.5 <br />Advanced GeoEnvironmental, Inc.