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404 N Wlget lane <br /> Sequoia Walnut Creek,CA 94598 <br /> 4D <br /> (925)9W9600 <br /> FAX(925)988-8673 <br /> �wo Analytical www sequolalabs com <br /> Gettler Ryan,Inc -Dublin Protect Tosco <br /> 6747 Sierra Court Suite I Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Prosect Manager Doug Lee 05-Ian-01 08 01 <br /> Total Purgeable Hydrocarbons by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Sptice Source %REC RPD <br /> Analyte Result Luna Units Level Result %REC Limits RPD Lu t Notes <br /> Batch OL24002-EPA 5030B [PIT] <br /> Blank(OL24002-BLKI) Prepared&Analyzed 24-Dec-00 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Surrogate qqa-Tnfluorotoluene 351 300 117 70-130 <br /> LCS(OL24002-BS1) Prepared&Analyzed 24-Dec-00 <br /> Benzene 176 0 50 ug/L 200 886 70.130 <br /> Toluene 176 0 50 200 880 70-130 <br /> Ethylbenzene 174 0 50 200 870 70-130 <br /> lens(total) 517 0 50 60 0 862 70-130 <br />_rogate a aa-Tnfluorotoluem 291 300 970 70-130 _ - <br /> Matnx Spike(OL24002-M91) Source W012314-04 Prepared&Analyzed 24-Dec-00 <br /> Benzene 172 0 50 ug/l 200 ND 860 70-130 <br /> Toluene 173 0 50 200 ND 865 70-130 <br /> Ethylbenzene 171 0 50 200 ND 85 5 70-130 <br /> Xylenes(total) 511 050 600 ND 852 70-130 <br /> Surrogate a g o—TnJluorotoluene 291 300 970 70-130 <br /> Matrix Spike Dup (OL24002-MSDI) Source W012314-04 Prepared&Analyzed 24-Dec-00 <br /> Benzane 183 050 ug/1 200 ND 915 70-130 620 20 <br /> Toluene 184 0 50 200 ND 920 70-130 616 20 <br /> Ethylbenzene 182 0 50 200 ND 910 70-130 623 20 <br /> Xylenes(total) 541 0 50 600 ND 902 70-130 570 20 <br /> Surrogate qqa-Tnlheorotoluene 303 300 101 70-130 <br /> uOla Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document.This analytical report must be reproduced in its entirety <br /> Page 12 of 27 <br />