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Sequoia 1551 Industrial Road <br /> San Carlos CA 94070-4111 <br /> Analytical (650) 232-9600 <br /> FAX(650) 232-9612 <br /> 0 <br /> Blame Tech Services Project Shell(2) Sampled 4/22/99 <br /> 1680 Rogers Avenue Project Number Shell 341 East Main St,990422-LI Received 4126/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 5/14/99 <br /> #�_ '*, r� M�Tota1 Pu7rgeable$ydroca�tions (frC12),`BTEX and MTBE by QHS LUFTIQuality antro/ <br /> Sequoia"811)t1C41SdAlt Carlos, <br /> < <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Anadyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9050007 Date Prepared 5/3/99 Extraction Method EPA 5030B_IP/TJ <br /> Blank 9050007-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5/5/99 ND ug/1 500 <br /> Benzene ND to 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND to _ 500 <br /> Surrogate a,a,a-Tri luorotoluene 100 961 700-130 961 <br /> LCS 9050007-BS 1 <br /> Benzene 5/5/99 loo 966 ug/1 700-130 966 <br /> Toluene 100 9 88 700-130 988 <br /> Ethylbenzene too 103 700-130 103 <br /> Xylenes(total) 300 284 700-130 947 <br />*7vgate a a,a-Tr�fluorotaluene 10 0 9 64 700-130 964 <br /> Matrix Spike 9050007-MS1 L904337-03 <br /> Benzene 5/5/99 100 ND 927 ug/1 60 0-140 927 - <br /> Toluene 100 ND 935 600-140 935 <br /> Ethylbenzene 100 ND 990 600-140 990 <br /> Xylenes(total) 300 ND 274 600-140 91.3 <br /> Surrogate a,a a-Trifluorotoluene " 100 839 700-130 83 9 <br /> Matrix Spike Dup 9050007-MSDI L904337-03 <br /> Benzene 5/5199 too ND 963 ug/I 600-140 963 25 0 3 81 <br /> Toluene too ND 972 of600-140 972 25 0 3 88 <br /> Ethylbenzene too ND 103 600-140 103 250 396 <br /> _Xylenes(total) 300 ND 284 600-140 947 250 366 _ <br /> Surrogate a a,a-Trcfluorotoluene 100 865 70 0-130 865 <br /> Batch 9050008 Date Prepared 5/3/99 Extraction Method EPA 5030E [P/T1 <br /> Blank 9050008-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 5/3/99 ND ug/1 50 0 <br /> Benzene ND 0 500 <br /> Toluene ND _—•=-0 500 <br /> Ethylbenzene ND 0 500 _ <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a,a,a-Trifluorotoluene 100 103 of 700-130 103 <br /> uoia Analytical-San Carlos *Refer to end of report far text of notes and defrnmons <br /> Page 7 of 9 <br />