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404 N Wl9etLane <br /> -Sequoia Walnut Creek,CA 94598 <br /> 4 (925)98&9600 <br /> 4DFAX(925)98&9673 <br /> AwAnalytical www seguolaiatis corn <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# U l 192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 21-Dec-00 09 55 <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 Lunt Nates <br /> Batch OL15002-EPA 5030B [PIT] <br /> Blank(OL1S002-BLK1) Prepared&Analyzed 15-Dec-00 <br /> Purgeable Hydrocarbons ND 50 ug/L <br /> Benzene ND 050 " <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Surrogate a,a,a-Tnfluorotoluene 310 300 103 70-130 <br /> LCS(OL15002-BS1) Prepared&Analyzed 15-Dec-00 <br /> Benzene 180 0 50 ug/1 200 900 70-130 <br /> Toluene 180 0 50 200 900 70-130 <br /> Ethylbenzene 179 050 200 995 70-130 <br /> Xylenes(total) 53 6 050 600 893 70-130 Amok <br /> Surrogate a a a-Tnfluorotoluene 270 300 900 70-130 <br /> Matrix Spike(OL15002-MSI) Source W012197-03 Prepared&Analyzed 15-Dec-00 <br /> Benzene 17 7 0 50 ug/1 200 ND 885 70-130 <br /> Toluene 17 6 050 200 ND 880 70-130 <br /> Ethylbenzene 174 050 200 ND 87 0 70-130 <br /> Xylenes(total) 520 050 600 ND 867 70-130 <br /> Surrogate q 4 a-Trtfluorotoluene 279 300 930 70-130 <br /> Matrix Spike Dup (OL15002-MSD1) Source W012197-03 Prepared&Analyzed 15-Dec-00 <br /> Benzene 183 050 ug/1 200 ND 915 70-130 333 20 <br /> Toluene 184 050 200 ND 92 0 70-130 444 20 <br /> Ethylbenzene 182 050 200 ND 910 70-130 449 20 <br /> Xylenes(total) 537 050 600 ND 895 70-130 322 20 <br /> Surrogate a,qa-Tnfluorotoluene 296 300 987 70-130 <br /> Sequoia 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 entirei <br /> Page 4 of 6 <br />