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COLUMBIA'ANALYTICAL SERVICES'.INC. 1771;'. <br /> Client: EMCON Associates Date Received: 06/11/92; 4 <br /> Project: EMCON.Project No'. G71=33.01 Work Order#: SJ92-073 6 i� sf <br /> Arco Facility No. 54B Sample Matrix: Watery <br /> p p <br /> QA/QC Report <br /> Continuing Calibration Summary <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Nanograms <br /> Date Analyzed: 06/15/92 <br /> CCS CCS % CCS Acceptance <br /> Analyte Loaded Recovered Recovered Criteria <br /> Benzene 250. 252. 101. 85-115 <br /> Toluene 250. 256. 103. 85-115 <br />� . Ethylbenzene 250. 247. 99. 85-115 ' <br /> Total Xylenes 750. 795. 106. 85-115 <br /> TPH as Gasoline 2,500. .2,409. 96. 90-110 <br />• TPH Total Petroleum Hydrocarbons <br /> CCS Continuing Calibration Standard <br /> % CCS Recovered = (CCS Recovered/CCS Loaded) x 100% <br /> Approved by ( &&id k&-4.� Date <br />