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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> 404 N Wiget lane Walnut Creek CA 94596 (925)988-9600 FAX(925)988-9673 <br /> ,!T-N "Analytical 819StrikeAvenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Blaine Tech Semces Project Shell(2) Sampled 2/23199 <br /> 1680 Rogers Avenue Project Number Shell 2494 Fremont St,990223-Y4 Received 2/26/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 3/19199 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> LCS 9030038-BSI <br /> Benzene 3/10/99 too 843 ugil 700-130 843 <br /> Toluene 100 829 700-130 829 <br /> Ethylbenzene 10 0 8 61 700-130 86 1 <br /> Xylenes(total) 300 26 7 700-130 890 <br /> Surrogate a a a-Trifluoro toluene 3110199 10 0 831 700-130 831 <br /> Matrix Spike 9030038-MSI L903040-10 <br /> Benzene 3110/99 10 0 0 885 108 ug/1 600-140 992 <br /> Toluene l0 0 ND 912 600-140 912 <br /> Ethylbenzene 100 ND 959 600-140 959 <br /> Xylenes(total) 300 ND 277 600-140 92.3 <br /> Surrogate a a a-Trifluorotoluene 3110199 100 112 700-130 NR 1 <br /> Matrix Spike Dup 9030038-MSDI L903040-10 <br /> zene 3/10/99 100 0 885 996 ug/l 600-140 908 25 0 8 84 <br /> ene 100 ND 9 18 600-140 918 25 0 0 656 <br /> Ethylbenzene 100 ND 941 600-140 941 25 0 189 <br /> Xylenes(total) 300 ND 277 600-140 923 25 0 0 <br /> Surrogate a,a,a-Trifluorotoluene 3110199 100 109 700-130 NR I <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definitions <br /> • Page 6 of 7 <br />