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•t • <br /> 404 N WISet Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> 4 (925)988-9600 <br /> FAX(925)988-9673 <br /> Analytical _ sequoialabs`°m <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron it 9-6171 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 13-Jun-01 09 09 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lunt Units Level Result %REC Luntts RPD Ltmtt Notes <br /> Batch lE30001 -EPA 5030B PIT <br /> LCS(1E30001-BSI) Prepared&Analyzed 31-May-01 <br /> Benzene 196 0 50 ug/I 200 980 70-130 <br /> Toluene 192 050 200 960 70-130 <br /> Ethylbenzene 200 050 200 100 70-130 <br /> Xylenes(total) 566 0 so 600 943 70-130 <br /> Surrogate aa,a-Trrfluorotoluene 305 300 102 70-130 <br /> LCS(1E30001-BS2) Prepared&Analyzed 01-Jun-01 <br /> Benzene 220 0 50 ug/1 200 110 70-130 <br /> Toluene 218 0 50 200 109 70-130 <br /> Ethylbenzene 223 0 50 200 112 70-130 <br /> Xylenes(total) 63 4 0 50 600 106 70-130 <br /> ate a aa-Trrfluorotoluene 310 300 103 70-130 <br /> L (1E30001-BS3) Prepared&Analyzed 02-Jun-01 <br /> Benzene 212 0 50 ug/1 20 0 106 70-130 <br /> Toluene 21 2 050 200 106 70-130 <br /> Ethylbenzene 213 050 200 106 70-130 <br /> Xylenes(total) 591 0 50 600 985 70-130 <br /> Surrogate get a-Tri luorotoluene 287 300 95 7 70-130 <br /> LCS(IE30001-BS4) Prepared&Analyzed 04-Jun-Ol <br /> Benzene 224 050 ug/I 200 112 70-130 <br /> Toluene 214 050 200 107 70-130 <br /> Ethylbenzene 222 050 200 111 70-130 <br /> Xylenes(total) 632 0 50 600 105 70-130 <br /> Surrogate a a a-Tri luorotoluene 303 300 101 70-130 <br /> LCS Dup (1E30001-BSDl) Prepared&Analyzed 31-May-01 <br /> Benzene 214 0 50 ug/1 200 107 70-130 878 20 <br /> Toluene 21 3 0 50 200 106 70-130 104 20 <br /> Ethylbenzene 217 0 50 200 108 70-130 8 15 20 <br /> Xylenes(total) 6l 5 0 50 600 102 70-130 830 20 <br /> Surrogate a g a-Tnfluorotoluene 323 300 108 70-130 <br /> 1a Analytical-Walnut Creek The results in this report apply to the samples analyzed to accordance with the charn of <br /> custody document This analytical report must be reproduced to its entirety <br /> Page 7 of 9 <br /> r� <br />