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Sequoia 404 N Wilane <br /> Walnut Creek CAA 94598 <br /> (925)988-9600 <br /> Analytical www <br /> 988-9673 <br /> sequoequolalabs cam <br /> Gettler Ryan Inc - Dubltn Project Tosco <br /> 6747 Sierra Court Suite I Project Number Tosco# 11193 Reported <br /> Dublin CA, 94568 Project Manager Doug Lee 16-Qct-Ol 08 43 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Analyte Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1310002 - EPA 5030B P/T <br /> Blank(1J10002-BLKI) _ Prepared&Analyzed 10-Oct-01 <br /> Purge able Hydrocarbons(C6-C12) ND - 50 ugll — <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether(MTBE) ND 25 " <br /> Surrogate a a a-Truorotoluene 303 300 101 70-130 ,_-- <br /> LCS(1310002-BSI) W Prepared&Analyzed 10-Oct-01 <br /> Benzene 18 3 050 ug/I 200 915 70-130 —� <br /> Toluene 194 050 200 970 70-130 <br /> ylbenzene 203 050 i; 200 102 70-130 <br /> enes(total) 607 050 600 101 70-130 <br /> Surrogate a a a-Trrfluorololuene 30 1 ---- <br /> 300 --` 100 70-130 - <br /> Matrix Spike(IJJ0002-MSI) Source W110166-03 Prepared 10-Qct-Ol Analyzed 12-Oct-01 <br /> Benzene 17 5 0 50 ug/l _ 20 0 ND 875 70-130 <br /> Toluene 186 050 200 ND 93 0 70-130 <br /> Ethylbenzene 192 050 200 ND 960 70-130 <br /> Xylenes(total) 57 7 050 600 ND 962 70-130 <br /> Surrogate a a a-Triuorotoluene - 304 —-- —--_- „- 300 '--- 101 70-130 <br /> Matrix Spike Dup (IJ10002-MSD1) Source W110166-03 Prepared 10-Oct-Ol Analyzed 12-Oct-01 <br /> Benzene 17 8 050 ug/I 20 0 ND 89 0 70-130 170 20 <br /> toluene <br /> 188 050 200 ND 940 70-130 107 20 <br /> Ethylbenzene 196 050 200 ND 980 70-130 206 20 <br /> Xylenes(total) 590 050 600 ND 983 70-130 223 20 <br /> Surrogate a a a-Trifluorotoluene 304 300 101 70-130 <br />�quoia Analytical - Walnut Creek The results in this re ort apply to the samples analyzed to accordance with the chain of <br /> p <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 3 of 4 <br />