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[ ) <br /> Sequoia `"/ 819 Striker Avenue,Suite 8 <br /> ' Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921 0100 <br /> www.scquoialabs.com <br /> r <br /> :i <br /> SECOR International-Rancho Cordova Project: ARCO 434,Lodi,CA ' Sampled: 9/5/00 <br /> 3017 Kilgore Road,Suite 100 Project Number: N/A Received: 9/6/00 <br /> Rancho Cordova,CA 95670 Project Manager: Rusty Benkosky Reported: 9/20/00 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBEI�by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov, RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Blank(continued) 0090142-BLKI <br /> Surrogate: a,a,a-Trifluorotoluene 9/14/00 10.0 10.3 1u9/1 60.0-140 103 <br /> LCS 0090142-BSI <br /> Benzene 9/14/00 10.0 10.0 1 ug/l 70.0-130 100 <br /> Toluene 10.0 9.92 70.0-130 99.2 <br /> Ethylbenzene 10.0 10.3 70.0-130 103 <br /> Xylenes(total) 30.0 30.7 i" 70.0-130 102 <br /> Methyl tert-butyl ether 10.0 11.5 70.0-130 115 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.1 60.0-140 101 <br /> Matrix Spike 0090142-MSI S009051-02 <br /> Benzene 9/14/00 10.0 ND 10.1 -lug/l 60.0-140 101 <br /> Toluene 10.0 ND 9.87 60.0-140 98.7 <br /> Ethylbenzene 10.0 ND 10.4 i" 60.0-140 104 <br /> Xylenes(total) 30.0 ND 31.1 60.0-140 104 <br /> Methyl tert-butyl ether 10.0 ND 13.6 60.0-140 136 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.0 60.0-140 100 <br /> Matrix Spike Dup 0090142-MSD/ S009051-02 <br /> Benzene 9/14/00 10.0 ND 10.1 ug/l 60.0-140 101 25.0 0 <br /> Toluene P. 10.0 ND 9.76 60.0-140 97.6 25.0 1.12 <br /> Ethylbenzene 10.0 ND 10.3 !" 60.0440 103 25.0 0.966 <br /> Xylenes(total) 30.0 ND 30.8 60.0-140 103 25.0 0.966 <br /> Methyl tert-butyl ether 10.0 ND 13.4 1" 60.0-140 134 25.0 1.48 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.2 60.0-140 102 �T <br /> Batch: 0090156 Date Prepared: 9/15/00 ]Extraction Method: EPA 5030B(MeOH) <br /> Blank 0090156-BLKI J <br /> Purgeable Hydrocarbons 9/15/00 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) " ND 0.500 <br /> Methyl tert-butyl ether ND 2.50 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.3 J 60.0-140 103 <br /> i <br /> LCS 0090156-BSI <br /> Benzene 9/15/00 10.0 10.0ug/1 70.0-130 100 <br /> Toluene 10.0 9.78 70.0-130 97.8 f <br /> Ethylbenzene 10.0 10.5 70.0-130 105 i <br /> Xylenes(total) 30.0 31.0 70.0-130 103 <br /> Sequoia Analytical-Sacramento 'Refer to end ofreport for text of notes and definitions. <br /> I <br /> s <br /> I <br /> Page 7 of 1 I <br /> i <br />