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Sequoia 404 N ,CA Lane <br /> Walnut Creek,CA 94598 <br /> �,,,,� .Analytical `925'gabs co 0 <br /> FAX(925)988-9673 <br /> www sequolalabs coni <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11193 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 04-Jan-01 10 26 <br /> Total Purgeable Hydrocarbons by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OL24002-EPA 5030B JP/TJ - - I- <br /> Blank(OL24002-BLKI) Prepared&Analyzed 24-Dec-00 <br /> Purgeable Hydrocarbons ND 50 ugn <br /> Benzene ND 050 <br /> Toluene ND 050 " <br /> Lthylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 <br /> Surrogate gAo-Tri luorotoluene 351 <br /> 300 117 70-130 <br /> LCS (OL24002-BS1) Prepared&Analyzed 24-Dec-00 <br /> Benzene 176 <br /> 0 50 ug/1 200 88 0 70-130 <br /> Toluene 176 050 200 880 70-130 <br /> Ethylbenzene 174 0 50 200 870 70-130 <br /> Xylenes(total) 517 050 600 862 70-130 <br /> Surrogate a a,a-Trifluorotoluene 291 " 300 970 70-130 <br /> Matrix Spike(OL24002-MSI) Source W012314-04 Prepared&Analyzed 24-Dec-00 <br /> Benzene 172 0 50 ug/l 200 ND 860 70-130 <br /> Toluene 17.3 n 50 0 0 ND 85"5-70-130 <br /> Ethylbenzene 171 050 200 ND 855 70-130 <br /> Xylenes(total) 511 050 600 ND 852 70-130 <br /> Surrogate a,a a-Trlfluorotoluene 191 300 970 70-130 <br /> Matrix Spike Dup (OL24002-MSD1) Source W012314-04 Prepared&Analyzed 24-Dec-00 <br /> Benzene 183 050 ug/1 200 ND 91 5 70-130 620 20 <br /> Toluene 184 050 200 ND 920 70-130 616 20 <br /> Ethylbenzene 182 050 " <br /> 200 ND 91 0 70-130 623 20 <br /> Xylenes(total) 541 030 600 ND 902 70-130 570 20 <br /> Surrogate a,a,a-Trifluorotoluene 303 300 101 70-130 <br /> Sequoia Analytical-Walnut Creek The results to this report apply to the samples analyzed rn accordance with the chain of <br /> custody document This analytical report must he reproduced in its entire <br /> Page 12 of 27 <br />