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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 /> Blaine Tech Services Project Shell(1) Sampled 5/28/99 <br /> 1680 Rogers Avenue Project Number Shell 7910 Lower Sacramento Rd,Stockton Received 6/1/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 6/17/99 <br /> Total Purgeable Hydrocarbois~(C6-C12),BTEX avid MTBE by DHS LUFT/Quality Control- <br /> _ - �-- '� 1 _ _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 /> Batch 9060062 Date Prepared 6110199 Extraction Method EPA 5030B IP/T1 <br /> Blank 9060062-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 6/10/99 NO ug/l 500 <br /> Benzene NO 0, 0 500 <br /> Toluene NO 0 500 <br /> Ethylbenzene NO 0 500 <br /> Xylenes(total) NO 0 500 <br /> Methyl tert-butyl ether NO 500 <br /> Surrogate a,a a-Trfluorotoluene 100 104 700-130 104 <br /> LCS 9060062-BSI <br /> Purgeable Hydrocarbons as Gasoline 6/10/99 250 270 ug/1 700-130 108 <br /> Surrogate a,a,a-Trifluorotoluene el10 0 117 " 700-130 117 <br /> Matrix Spike 9060062-MS1 L905592-02 <br /> Purgeable Hydrocarbons as Gasoline 6/10/99 250 ND 215 ug/l 600-140 860 <br /> Surrogate a s a-Trfluorotoluene 100 106 F1 700-130 106 <br /> Matrix Spike Dup 9060062-MSD1 L905592-02 <br /> Purgeable Hydrocarbons as Gasoline 6/10/99 250 ND 206 ug/I 600-140 824 250 4 28 <br /> Surrogate a,a,a-Trfluorotoluene 100 985 700-130 98 5 <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and def nitro <br /> Page 5 of 7 <br />