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®C-HW Q0"T[r-1C l CERTIFICATE OF ANALYSIS <br /> Ana/ytica/ Laboratory <br /> TuesJay, July 21 1999 <br /> Advanced GeoEnviron mental <br /> 4005 N. Wilson Way <br /> Stockton, CA. 95205 <br /> Sample Information <br /> Sample ID: PE5412-01 Sample Type: Grab <br /> Sample Description: P-1 Project Name: Lodi Airport <br /> DateJTime Sampled: 6/18/99 1:55:00 PM Sample Matrix: Soil <br /> ANALYTICAL RESULT OA/QCREPORT <br /> Date LCS Spike MS Spike < <br /> 's Test Parameter Method DLR Unit Result Dilation 'Analyzed Blank Conn LCS% Conc. MS% MSD RSD <br /> ........ w. :..... _ „o <br /> ..Lead(Pb) EPA 6020 1 mg/Kg 2.8 15 24-Jun-99 ND 0.025 960% 0.025 98.4% 96.0% 0.6% <br /> `.TPH-Gasoline EPA 8015M/DHS 1 mg/Kg 2.7 1 21-Jun-99 ND 1 95D°% 1 89.0°% 92.0% 0.8°% <br /> ? Benzene EPA 8020 5 ug/Kg ND 1 21-Jun-99 ND 5 92.0% 5 92.0°% 94.0°% 0.5°% $ <br /> s Toluene EPA 8020 5 ug/Kg ND 1 21-Jun-99 ND 5 96.0°% 5 1020°% 960% 1.50% e <br /> Ethylbenzene EPA 8020 5 ug/Kg ND 1 21-Jun-99 ND 5 98.01/6 5 1040°% 96.0% 2.0% <br /> :Xylenes,Total EPA 8020 5 ug/Kg ND 1 21-Jun-99 ND 10 96.0°% 10 100.0°% 110.0% 2.4°% <br /> Methyl4-Butyl Ether(MtBE) EPA 8020 5 ug/Kg ND 1 21-Jun-99 ND 5 90.0°% 5 90.0% 98.0°% 2.1% <br /> ntgt6 -milligrams per Luer ppm DLR-Detection Lirni(for the Purpose of RSD represent relative different(RPD)berneen duplicates spike ofsamples� <br /> •tg/L micrograms per Liter=ppb Reporting. Exceptional sample matrices or or Duplicate of Sample <br /> mterfereneces may result in higher detection bLSMSD-measure ofthe percent recovery efficiencies Within the matrix 40 <br /> C=Composite G=Grab limits <br /> LCS_measure o/the percent recovery oJthe Laboratory Control Spike(L('S) <br /> RE�TFUL Y UB ITTED, <br /> Jonathan Hao Y.Le, Laboratory Director <br /> EPA-Environmenlal Protection Agency Method Page 1 of l <br />