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i <br /> '404 N W Set Lane <br /> Walnut,Creek,CA 94598 <br /> Sequoia (925)%&9WO <br /> FAX(925)988-9673 <br /> Analytical www sequolalabs corn <br /> Iko- <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 16-Jan-01 07 47 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Limits RPD ' Lumt Notes <br /> Batch 1A11002-EPA 5030B [PIT] <br /> Blank(1A11002-BLK1) Prepared&Analyzed l 1-Jan-OI S-03 <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 i <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate asap-TnfluoroYoluene 401 300 134 70-130 <br /> LCS(1A11002-BS1) Prepared&Analyzed I I-Jan-01 <br /> Benzene 173 050 ug/1 200 863 70-130 <br /> Toluene 175 050 200 875 70-130 <br /> Ethylbenzene 173 050 200 865 70-130 <br /> Xylenes(total) 512 0 50 ' 600 853 70-130 <br /> Surrogate a a a-TrfJluoroYoluene 299 300 997 70.130 <br /> Matrix Spike(1A11002-MSI) Source W101074-01 Prepared&Analyzed 11-Jan-01 <br /> Benzene 184 050 ug/1 200 ND 92 0 70-130 <br /> Toluene 188 1050 20 0 ND 940 70-130 <br /> i <br /> Ethylbenzene 184 050 200 ND 920 70-130 <br /> Xylenes(total) 541 050 600 12 982 70-130 <br /> Surrogate asa,a-Trtfluorotoluene 315 300 105 70-130 <br /> Matrix Spike Dup(1A11002-MSD1) Source W101074-01 Prepared&Analyzed Il-Jan-OI <br /> Benzene 185 050 ug/1 200 ND 92 5 70-130 0 542 20 <br /> Toluene 189 050 200 ND 945 70-130 0 53l 20 <br /> Ethylbenzene 196 050 200 ND 930 70-130 108 20 <br /> Xylenes(total) 554 050 600 12 903 70-130 237 20 <br /> Surrogate a,qa-Trtfluorotoluene 31 2 300 104 70-130 <br /> Sequoia Analytical-Walnut Creek The results in tits report apply to the samples analyzed to accordance with the chars o <br /> custody document Pus analytical report must be reproduced in its enprw <br /> Page 4 of 7 <br />