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Sequoia 885 Jarvis Drive <br /> Morgan Hill,CA 95037 <br /> (408) 776-9600 <br /> _ Analytical FAX(408) 782-6308 <br />,i ATC Associates,Inc.-Modesto Project: Sampled: 9/23/99 <br /> 11.17 Lone Palm Avenue Project Number: SUSD/Corp Yard Received: 9/24/99 <br /> Modesto,CA 95351-1502 Project Manager: Tom Lutterman Reported: 10/5/99 <br /> , <br /> = MTBE by DS LUFT/ uait Control - <br /> ' <br /> A <br /> _q �t <br /> Date Spike Sample QC Reporting Limit Rccov. RPD RPD <br /> i Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9090881 Date Prepared: 9/29199 Extraction Method: EPA 5030B PIT <br /> -Blank 9090881-BLKI <br /> Methyl tent-butyl ether 9129/99 ND mg/kg 0.0250 <br /> Benzene ND 0.00500 <br /> F <br />[k Toluene " ND " 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Surrogate: a,a,a-Trifluorotoluene 0.0200 0.0147 60.0-140 73.5 <br /> LCS 9090881-BSI <br /> Benzene 9/29/99 0.200 0.140 mg/kg 70.0-130 70.0 <br /> Toluene 0.200 0.143 70.0-130 71.5 <br /> Ethylbenzene 0.200 0.154 70.0-130 77.0 <br /> �lenes(total) 0.600 0.467 70.0-130 77.8 <br /> ogate: a,a,a-Triuorotoluene 0.0200 0.0150 60.0-140 75.0 <br /> Matrix Spike 9090881-MSI M909799-01 <br /> Benzene 9/29/99 0.200 ND 0.130 mg/kg 60.0-140 65.0 <br />` Toluene 0.200 ND 0.130 60.0-140 65.0 <br /> Ethylbenzene 0.200 ND 0.142 60.0-140 71.0 <br /> Xylenes(total) 0.600 ND 0.435 60.0-140 72.5 <br /> Surrogate: a,a,a-Trifluorotoluene 0.0200 0.0153 60.0-140 76.5 <br /> f Matrix Spike Dun 9090881-MSD1 M909799-01 <br /> Benzene 9129/99 0.200 ND 0.125 mg/kg 60.0-140 62.5 25.0 3.92 <br /> Toluene 0.200 ND 0.129 60.0-140 64.5 25.0 0.772 <br /> Ethylbenzene 0.200 ND 0.138 60.0-140 69.0 25.0 2.86 <br /> Xylenes(total) 0.600 ND 0.420 60.0-140 70.0 25.0 3.51 <br /> Surrogate: a,a.a-Tris luorotoluene 0.0200 0.0153 60.0-140 76.5 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitions. <br /> 4 <br /> I <br /> Page 5 of 6 <br />