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COLUMBIA ANALYTICAL SERVICES,INC <br /> Analytical Report <br /> Chent ENSR Consulting&Engm=mg Service Request, S9701416 <br /> Project: Norcal/Stockton Scavenger/5027-002 Date Collected. 7116197 <br /> Sample Matruc: Solid Date Received: 7/22/97 <br />' BTEX and TPH as Gasoline <br /> 1 Sample Name SVGAC-2 Units mg/Kg(p'ni) <br /> Lab Code 59701416-003 Basis Wet <br /> 1 Test Notes <br /> Prep Analysis Dilution Date Date Result <br /> 1 Analyte Method Method MRL Factor Extracted Analyzed Result Notes <br /> TPH as Gasoline EPA 5030 CA/LUFT 1 10 7/29/97 7129/97 120 <br /> 1 Benzene EPA 5030 8020 0 005 10 7/29/97 7/29197 <0 05 C1 <br /> Toluene EPA 5030 8020 0 005 10 7/29/97 7129197 027 <br /> Ethylbenzew EPA 5030 8020 0 005 10 7/29/97 7/29/97 01 <br /> 1 Xylenes,'total EPA 5030 8020 0 005 10 7129197 7/29/97 0 3 <br /> i <br /> 1 <br /> 1 <br /> 1 <br /> C1 The MRL was elevated due to high analyte concentration requiring sample dilution <br /> 1 <br /> 1 <br /> 1522/020597p <br /> 1 <br /> 1 Page 4 <br />