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1551 Industrial Road <br /> Sequoia San Carlos CA 94070-4111 <br /> ,!DIWO Analytical (650) 232-9600 <br /> FAX (650) 232-9612 <br /> 0 <br /> Blaine Tech Services Project Shell(l) Sampled 5/13199 <br /> 1680 Rogers Avenue Project Number Shell 6131 Pacific Ave,Stockton Received 5/14/99 <br /> San Jose,CA 9S 112 Project Manager Fran Thie Reported 6/22/99 <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 /> Batch 9050112 Date Prepared 5125/99 Extraction Method EPA 5030B IP/TI <br /> Blank 9050112-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5/25/99 ND ug/I 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ItND 0 500 <br /> Methyl tent-butyl ether 11 _ ND to500 <br /> Surrogate a a a-Trifluorotoluene 100 837 700-130 837 <br /> LCS 9050112-BS1 <br /> Benzene 5/25/99 850 ug/i 700-130 85 0 <br /> Toluene 11865 700-130 865 <br /> Ethylbenzene 01853 700-130 85 3 <br /> es(total) 25 8 70 0-130 86 1 <br /> ate a a,a-Trtfluorotoluene 10 0� 767 700-130 76 7 <br /> Matrix Spike 9050112-MSI L905256-05 <br /> Benzene 5/25/99 100 ND 8 64 ug/l 600-140 864 <br /> Toluene 100 ND 855 600-140 855 <br /> Ethylbenzene 100 ND 8 58 600-140 858 <br /> Xylenes(total) 300 ND 257 600-140 85 7 <br /> Surrogate a,a a-Trifluorotoluene 100 835 700-130 835 <br /> Matrix Spike Dup 9050112-MSDI L905256-05 <br /> Benzene 5/25/99 100 ND 840 ug/I 600-140 84 0 25 0 282 <br /> Toluene 11100 ND 828 to600-140 828 250 3 21 <br /> Ethylbenzene it100 ND 825 to600-140 82 5 250 3 92 <br /> Xylenes(total) 300 ND 245 11600-140 _817 25 0 478 <br /> Surrogate a a a-Trifluorotoluene 100 798 fo700-130 798 <br /> Batch 9050113 Date Prepared 5/25/99 Extraction Method EPA 5030B IP/Tl <br /> Blank 9050113-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5/25/99 ND ug/l 500 <br /> Benzene ItND to0 500 <br /> Toluene ND " 0 500 <br /> Ethylbenzene ND to 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a,a a-Trifluorotoluene 100 851 700-130 851 <br /> Sequoia Analytical-San Carlos *Refer to end of report far text of notes and definitions <br /> Page 10 of 16 <br />