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Sequoia 680 Chesapeake Drive Redwood City, CA 9406' (650) 364-9600 FAX(650)364.9233 <br /> 104 N.Wiget Lane Walnut Creek,CA 94591 (510) 988.9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> �,,,F <br /> Kleinfelder-Stockton Project: N/A Sampled: 6/5/98 <br /> 2825 East Myrtle Street Project Number: 20-3712-08 Received: 6/9/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 6/23/98 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 8060169 Date Prepared: 6/12/98 Extraction Method: EPA 5030B(P/T) <br /> Blluk 8060169-BLKI <br /> °urgeable Hydrocarbons 6/12/98 ND ug/I 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> 3thylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 10.3 60.0-140 103 <br /> Lfs 8060169-BSI <br /> Benzene 6/12/98 10.0 10.8 ug/l 70.0-130 108 <br /> Toluene 10.0 10.2 70.0-130 102 <br /> Ethylbenzene 10.0 10.0 70.0-130 100 <br /> Xylenes(total) 30.0 29.8 70.0-130 99.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.1 60.0-140 101 <br /> Matrix Spike 8060169-MSI S806087-00 <br /> Benzene 6/12/98 10.0 ND 10.5 ug/l 60.0-140 105 <br /> Toluene 10.0 ND 9.90 60.0-140 99.0 <br /> Ethylbenzene 10.0 ND 9.84 60.0-140 98.4 <br /> Xylenes(total) 30.0 ND 29.1 60.0-140 97.0 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 10.1 60.0-140 102 <br /> Matrix Spike Duo 8060169-MSD1 S806087-00 <br /> Benzene 6/12/98 10.0 ND 10.5 ug/I 60.0-140 105 25.0 0 <br /> Toluene 10.0 ND 10.0 60.0-140 100 25.0 1.01 <br /> Ethylbenzene 10.0 ND 9.98 60.0-140 99.8 25.0 1.41 <br /> Xylenes(total) 30.0 ND 29.2 60.0-140 97.3 25.0 0.309 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.56 60.0-140 95.6 <br /> Batch: 8060229 Date Prepared: 6/18/98 Extraction Method: EPA 5030B(MeOHI <br /> muk 8060229-BLKI <br /> Purgeable Hydrocarbons 6/18/98 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Surrogate: a,a,a-Trifluorotoluene 0.100 0.194 60.0-140 97.0 <br /> LICS 8060229-BS1 <br /> Benzene 6/18/98 0.200 0.218 mg/kg 70.0-130 109 <br /> Toluene 0.200 0.205 70.0-130 102 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> nda C.Schnei er,Laboratory Director Page 7 of 13 <br />