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I) <br /> J 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> 1, -y (916)921-9600 <br /> f� -0100 <br /> Analytical <br /> FAX Nu 92 s.com <br /> J www.sequoialabs.com <br /> { <br /> t <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 j Reported: '9/20/00 <br /> Total Purgeable Hydrocarbons(C6-Cl2),BTEX and MTBE�by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> i <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result '`Units Recov. Limits % Limit % Notes* <br /> Batch: 0090138 Date Prepared: 9/13/00 VExtraction Method: EPA 5030B(MeOH) <br /> Blank 0090138-BLK1 <br /> Purgeable Hydrocarbons 9/13/00 ND ug/1 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 9.94 60.0-140 99.4 <br /> i <br /> LCS 0090138-BSI <br /> Benzene 9/13/00 10.0 10.1 'ug/l 70.0-130 101 <br /> Toluene 10.0 9.95 70.0-130 99.5 <br /> Ethylbenzene 10.0 10.4 70.0-130 104 <br /> Xylenes(total) 30.0 30.9 70.0-130 103 <br /> Methyl tert-butyl ether 10.0 11.6 70.0-130 116 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.3 60.0-140 103 <br /> Matrix Spike 0090138-MSI S009051-02 <br /> Benzene 9/13/00 10.0 ND 10.4 ug/I 60.0-140 104 <br /> Toluene 10.0 ND 10.1 60.0-140 101 <br /> Ethylbenzene 10.0 ND 10.7 PI60.0-140 107 <br /> Xylenes(total) 30.0 ND 31.9 60.0-140 106 <br /> Methyl tcrt-butyl ether 10.0 ND 12.8 60.0-140 128 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.5 60.0-140 105 <br /> Matrix Spike Dup 0090138-MSDI S009051-02 <br /> Benzene 9/13/00 10.0 ND 10.7 iug/I 60.0-140 107 25.0 2,84 <br /> Toluene 10.0 ND 10.3 60.0-140 103 25.0 1.96 <br /> Ethylbenzene 10.0 ND 10.9 60.0-140 109 25.0 1.85 <br /> Xylenes(total) 30.0 ND 32.6 60.0440 I09 25.0 2.79 <br /> Methyl tert-butyl ether 10.0 ND 14.0 60.0-140 140 25.0 8.96 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 10.6 60.0-140 106 <br /> Batch: 0090142 Date Prepared: 9/14/00 Extraction Method: EPA 5030B McOH <br /> Blank 0090142-BLKI <br /> Purgeable Hydrocarbons 9/14/00 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 i <br /> Methyl tert-butyl ether ND �" 2.50 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 6 of 11 <br /> i <br />