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1551 Industrial Road <br /> Sequoia '��650)Z33Z 49'600 <br /> FAX(650)232-9612 <br /> Analytical .sequ°lalabs.com <br /> Gettler-Ryan/Geostrategies(l) Project: Tosco(2) Sampled: 11/13/00 <br /> 6747 Sierra Court,Suite J Project Number: Unocal SS#1 l 195 Received: 11/13/00 <br /> Dublin,CA 94568 Project M er. Deanna Harding Reported: 11/29/00 <br /> INA.MIM <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> ,analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 0110107 Date Prepared: 11/21/00 Extraction Method: EPA 5030B 1P1'I7 <br /> Blank 0110107-BLKI <br /> Purgeable Hydrocarbons as Gasoline 11/21/00 ND ug/1 50.0 <br /> Benzene It <br /> ND „ 0.500 <br /> Toluene 11ND „ 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND it 0.500 <br /> Methyl tat-butyl ether +' ND It 5.00 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 8.53 F170.0-130 85.3 <br /> LCS 0110107-BS1 <br /> Benzene 11/21100 10.0 9.67 ug/1 70.0-130 96.7 <br /> Toluene '+ 10.0 9.22 It 70.0-130 92.2 <br /> Ethvr�benzene '" 10.0 9.29 70.0-130 92.9 <br /> 30.0 28.0 70.0-130 93.3 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 8.D5 70.0-130 80.5 <br /> LCS 0110107-BS2 <br /> Purgeable Hydrocarbons as Gasoline 11/21/00 250 232 ug/1 70.0-130 92.8 <br /> Surrogate: a,a.a-Trifluorotoluene 17 10.0 7.53 70.0-130 75.3 <br /> Matrix Spike 0110107-MSI L011151-03 <br /> Purgeable Hydrocarbons as Gasoline 11/2//00 250 ND 233 u9/1 60.0-140 93.2 <br /> Surrogate: %ax-Trifluorotoluene 10.0 8.47 70.0-130 84.7 <br /> Matrix Spike Dup 0110107-MSDI L011151-03 <br /> Purgeable Hydrocarbons as Gasoline 11/22/00 250 ND 219 ug/l 60.0-140 87.6 25.0 6.19 <br /> Surrogate: a,a,a-Trifluorotoluene " 10.0 7.89 of 70.0-130 78.9 <br /> Batch: 0110108 Date Prepared: 11/21/00 Extraction Method: EPA 5030B W/Tl <br /> Blank 0110108-BLKI <br /> Purgeable Hydrocarbons as Gasoline 11/21/00 ND ug/l 50.0 <br /> Benzene it ND it 0.500 <br /> Toluene „ ND " 0.500 <br /> Ethylbenzene IVND 0.500 <br /> Xylenes(total) it ND 0.500 <br /> Methyl.tert-butyl ether ° ND 5.00 <br /> Surrogate: a,a,a-Tris luorotoluene 10.0 11.7 70.0-130 117 <br /> LCS 0110108-BS1 <br /> Benzene 11/21/00 10.0 12.7 u9/1 70.0-130. 127 <br /> % ne " 10;0 11.7 70.0-130 117 <br /> Sequoia Analytical-San Carlos *Refer to end of report far text of notes and definitions. <br /> Page 14 of 19 <br />