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404 N WISet lane <br /> �I <br /> Sequoia Walnut Creek 259 94 <br /> ' <br /> ICO Analytical FAXequoalabsc73 <br /> www sequoEalabS Com <br /> Wer Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J ProjectNumber Tosco SS# 5886 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 26-Feb-01 07 38 <br /> Total Purgeable Hydrocarbons (C6-C1.2), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical - Morgan Hill <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lumt Units Level Result %REC Linuts RPD Limit Notes <br /> Batch 1B20004-EPA 5030B [P/TJ <br /> Blank(IB20004-BLKI) Prepared&Analyzed 20-Feb-01 <br /> Purgeable Hydrocarbons ND 500 ug/I <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethytbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate g a a-Tri luorotoluene 102 100 102 70-130 <br /> LCS(IB20004-BSI) Prepared&Analyzed 20-Feb-01 <br /> Benzene 104 0 500 ugll 100 104 70-130 <br /> Toluene 903 0 500 100 903 70-130 <br /> Ethylbenzcne 895 0 500 10 0 885 70-130 <br /> Xv (total) <br /> 272 0 500 300 907 70-130 <br /> S to aao-Tnfluarotoluetre 103 100 103 70-130 <br /> Matrix Spike(1B20004-MSI) Source MKBO472-03 Prepared&Analyzed 20-Feb-01 <br /> Fgeable hydrocarbons 112 500 ug/1 ND 60-140 <br /> Benzene 726 0 500 too ND 726 60-140 <br /> Toluene 939 0 500 100 ND 916 60-140 <br /> Ethylbenzene 971 0 500 100 ND 971 60.140 <br /> Xylenes(total) 295 0 500 300 ND 974 60-140 <br /> Methyl tern-butyl ether 395 250 ND 60-140 <br /> Surrogate a a o-Tnfluorotoluene IO 4 <br /> 100 104 70-130 <br /> Matrix Spike Dup(1B20004-MSDI) Source N IR0472-03 Prepared&Analyzed 20-Feb-01 <br /> Purgeable Hydrocarbons 112 500 ug/l ND 60-140 0 <br /> 25 <br /> Benzene 694 0 500 too ND 69 4 60-140 451 25 <br /> Toluene 9 14 0 500 100 ND 891 60-140 270 25 <br /> Ethylbenzene 948 0 500 100 ND 949 60-140 240 25 <br /> Xylenes(total) 291 0 500 300 ND 96 0 60-140 137 25 <br /> Methyl tent-butyl ether 35 4 250 ND 60-140 10 9 25 <br /> Surrogate q q a Tnjluoratoluetre 10 2 <br /> 100 102 70-130 <br /> Sequoia Analytical-Walnut Creek The results to this report l to the Samples p apply 1r analyred in accordance with the thorn of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 8 of 10 <br />