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1551 Industrial Road <br /> 4D ,Sequoia San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> qwr Analytical <br /> FAX (650) 232-9612 <br /> • <br /> Blaine Tech Services Project Shell(I) Sampled 5/13/99 <br /> 1680 Rogers Avenue Project Number Shell 6131 Pacific Ave,Stockton Received 5/14/99 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 6122199 <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 9050117 Date Prepared 5/26/99 Extraction Method EPA 5030B 1P/'T1 <br /> Blank 9050117-BLKI <br /> Purgeable Hydrocarbons as Gasoline 5/26/99 ND ug/l 500 <br /> Benzene ND it 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 9 30 700-130 93 0 <br /> LCS 9050117-BS1 <br /> Purgeable Hydrocarbons as Gasoline 5/26199 250 237 ug/1 700-130 94 8 <br /> Surrogate a s a-Trrfluorotoluene 11100 808 10700-130 808 <br /> NU&rix Sinike 9050117-MSI L905462-12 <br /> ble Hydrocarbons as Gasoline 5/26/99 250 N_D 241 ug/l 600-140 964 <br /> Surrogate aaa-Triuorotoluene " 100 7.53 700-130 75 3 <br /> Matrix Spike Dup 9050117-MSD1 L905462-12 <br /> Purgeable Hydrocarbons as Gasoline 5/26199 250 ND 243 ug/l 600-140 972 250 0 826____ <br /> Surrogate a a a-Triflumotoluene if100 760 " 700-130 760 <br /> Batch 9050126 Date Prepared 5127199 Extraction Method EPA 5030B IP/Tl <br /> Blank 9050126-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 5/27/99 ND ug/l 500 <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 aa-Trrfluorotoluene 100 945 700-130 945 <br /> LCS 9050126-BS1 <br /> Benzene 5/27/99 100 8 14 ug/l 700-130 814 <br /> Toluene 100 8 16 700-130 816 <br /> Ethylbenzene 100 8 18 700-130 81 8 <br /> Xylenes(total) _ 300 246 700-130 820 <br /> Surrogate a a,a-Trrfluorotoluene 100 8 35 700-130 835 <br /> Matrix Spike_ 9050126-MSI L905298-11 <br /> Benzene 5/27/99 100 RTD 3 54 ug/l 600-140 854 <br /> 'r-L--.. 100 ND 856 600-140 85 6 <br /> Sequoia Analytical- San Carlos *Refer to end of report for text of notes and deflnurom <br /> Page 12 of 16 <br />