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Sequoia 1551 Industrial/toad <br /> San Carlos CA 94070-4111 <br /> Analytical (650) 232-960 <br /> FAX(650) 232-96122 <br /> 0 <br /> Blaine Tech Services Project Shell(2) Sampled 4122/99 <br /> 1680 Rogers Avenue Project Number Shell 341 East Main St,990422-L1 Received 4/26199 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 5/14/99 <br /> ;�' 'TEw't'in+'� 0!V1,6, <br /> 5Controli � ,�� 4` 0 <br /> Date Spike Sample QC Reporting Limit Recov RPD =%?/. N <br /> Analyte Analyzed Level Result Result knits Recov Limits % Limit <br /> LCS 9050008-BSI <br /> Benzene 513/99 100 932 ug/l 700-130 932 <br /> Toluene 100 9 12 700-130 91 2 <br /> Ethylbenzene 100 852 '70 0-130 85 2 <br /> Xylenes(total) 300 28 8 700-130 960 <br /> Surrogate a,a a-Trfluorotaluene 100 11 1 700-130 111 <br /> Matrix Spike 9050008-MSI <br /> Benzene 513/9.9 100 423 436 ug/1 600-140 130 <br /> Toluene - 100 - 1'55 121 - — -600-140 - 106 - - --- <br /> Ethylbenzene 100 0 623 11 1 600-140 105 <br /> Xylenes(total) 300 6 15 35 1 It 600-140 965 <br /> Surrogate a,a,a-Trifluorotoluene 10 0 119 700-130 119 <br /> Matrix Spike Dup 9050008-MSDI <br /> Benzene 5/3/99 100 423 442 ug/1 600-140 190 25 0 375 <br /> Toluene 11100 155 11 6 600-140 101 250 4 83 <br /> Ethylbenzene 100 0 623 105 600-140 988 25 0 608 <br /> Xylenes(total) 300 6 15 372 600-140 103 250 6 52 <br /> Surrogate_a,a,a=Trtfluoroto1uene to100 12 6 " 70 0130——126 <br /> Batch 9050014 Date Prepared 514/99 Extraction Method EPA 5030D 1P/Tl <br /> Blank 9050014-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 5/4/99 ND ug/l 500 <br /> Benzene ND to 0 500 <br /> Toluene ND 0 500 <br /> Ethylberizene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND Soo <br /> Surrogate a,a a-Triuorotoluene 100 862 700-130 862 <br /> LCS 9050014-BS1 <br /> Purgeable Hydrocarbons as Gasoline 514199 250 264 ug/l 700-130 106 <br /> Surrogate a,a,a-Trtfluorotoluene 11 100 988 It 700-130 98 8 <br /> Matrix Spike 9050014-MS1 L904286-04 -- <br /> Purgeable Hydrocarbons as Gasoline_ 5/4/99 _ _ _250 __ ND 286 ug/l 600-140 114 _ <br /> Surrogate a,a,a-Trtfluorotoluene 1, 10 0 �� 847 700-130 84 7 <br /> Matrix Spike Du p 9050014-MSDI L904286-04 <br /> Purgeable Hydrocarbons as Gasoline 514/99 _ 250 ND 303 ug/l 600-140 121 250 596 <br /> Surrogate a s a-Trtfluorotoluene 100 8 72 700-130 872 <br /> Adlbk <br /> Sequoia Analytical-San Carlos *Refer to end of report for text of notes and definttto <br /> Page 8 of 9 <br />