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Sequoia �°" .CA 598 <br /> Walnut Creek.CA 9+4598 <br /> 4 (925)98&9600 <br /> ,!Do- <br /> Analytical F�(925)9 &9673 <br /> www.scquolalabs o , <br /> Gettler Ryan,Inc -Dublm Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06-Feb-01 17 21 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunit Units Level Result 0/611EC Unuts RPD Linut Notes <br /> Batch 1020021-EPA 5030B(PIT) <br /> Blank(1020021-BLK1) Prepared&Analyzed 02-Feb-01 <br /> Purgeable Hydrocarbons ND 500 ug/1 <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 250 " <br /> Surrogate gqa-Yhlluorotoluene 973 " 100 973 60-140 <br /> LCS(1020021-BSI) Prepared&Analyzed 02-Feb-01 <br /> Benzene 907 0 500 ug/1 100 907 70-130 <br /> Toluene 907 0 500 100 907 70-130 <br /> Ethylbenzene 909 0 500 100 909 70-130 <br /> Xylenes(total) 271 0 500 300 903 70-130 <br /> Methyl tet butyl ether 810 250 100 810 70-130 <br /> Surrogate q ga-Ti luorarohrene 983 1 d 0 9&3 60-140 <br /> Matrix Spike(1020021-MSI) Source 5102012-M Prepared&.Analyzed 02-Feb-01 <br /> Benzene 139 0 500 ug4 100 ND 139 60-140 <br /> Toluene 973 0 500 100 ND 973 60-140 <br /> Ethylbenzene 900 0 500 100 ND 900 60-140 <br /> Xylenes(total) 269 0 500 300 ND 897 60-140 <br /> Methyl tort butyl other 100000000 250 100 000000000 60.140 Q-03 <br /> Surrogate qqa-Tnjhrorotohtene 237 100 237 60.140 S-01 <br /> Matrix Spike Dup(1020021-MSDI) Source 5102012-06 Prepared&Analyzed 02-Feb-01 <br /> Benzene 135 0 500 ug/l 100 ND 135 60-140 292 25 <br /> Toluene 947 0 500 100 ND 947 60-140 271 25 <br /> Ethylbenzene 8 77 0 500 100 ND 877 60-140 2 59 25 <br /> Xylenes(tom) 266 0 500 300 ND 8&7 60-140 112 25 <br /> Methyl tert-butyl ether 100000000 2 50 100 000000000 60-140 0 25 Q-03 <br /> Surrogate qqa-Thluorvtohwne 227 100 117 60-140 S-01 <br /> Sequoia Analytical-Wahlut Creek The results in dlds report apply to the samples analyzed in accordance with the char <br /> custody document. Tlss analytical report must be reproduced in its enftreW <br /> Page 11 of 12 <br />