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- - - sequoia 819 Straker Avenue,S 8 <br /> -Sacramento,CA 95858 34 <br /> Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> NWwww sequoralabs co <br /> SECOR international-Rancho Cordova Project Tosco 1205,Lathrop, CA <br /> 3017 Kilgore Road,Suite 100 Project Number N/A Reported <br /> Rancho Cordova CA,95670 Project Manage- Rusty Benkosky 04/10/02 19 00 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reportmg Spice Source %REC RPD <br /> Analyte Result Limit Units L Vd Result %REC Lunits RPD Limit Notes <br /> Batch 2040087-EPA 5030B(P/T) <br /> Blank(2040087-BLKlY Prepared&Analyzed 04/03/02 <br /> Purgeable Hydrocarbons ND 50 119/1 — <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether ND 2 5 " <br /> Surrogate a a a-Trifluorotoluene 114 100 114 60-140 <br /> LCS(2040087-BSI) _ Prepared&Analyzed 04/03/02 <br /> Benzene 8 68 050 119/1 100 _ _ 868 70-130 <br /> Toluene 9 05 050 100 90 5 70-130 <br /> Ethylbenzene 103 050 100 103 70-130 <br /> Xylenes(total) 30 5 0 50 " 300 102 70-130 . <br /> Methyl tert-butyl ether 103 2 5 " 100 103 70-130 <br /> Surrogate a,a,a-Trifluorotoluene 110 100 110 60-140 <br /> Matrix Spike 2040087-MS1Source S203456-01 Prepared&Analyzed 04/03/02 <br /> Benzene 942 050 119/1 100 070 87 2 60-140 <br /> Toluene 105 050 " too 1 5 900 60-140 <br /> Ethylbenzene 107 050 10 0 ND 104 60-140 <br /> Xylenes(total) 35 4 050 30 0 4 8 102 60-140 <br /> Methyl tert-butyl ether 11 8 2 5 100 ND 960 60-140 <br /> Surrogate a a a-Tri luorotoluene 114 10 0 114 60-140 <br /> Matrix Spike Du 2040087-MSD1 Source S203456-01 Prepared&Anal 04/03/02 <br /> Benzene 9 57 050 119/1 too 070 88 7 60-140 1 58 25 <br /> Toluene 10 6 0 50 " 100 1 5 91 0 60-140 0 948 25 <br /> Ethylbenzene 10 9 0 50 " 10 0 ND 106 60-140 1 85 25 <br /> Xylenes(total) 358 050 30 0 4 8 103 60-140 1 12 25 <br /> Methyl tert-butyl ether 11 6 2 5 too ND 94 0 60-140 1 71 25 <br /> Surrogate a a,a-Trifluorotoluene 107 10 0 107 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance with the chat <br /> of custody document This analytical report must be reproduced in its entiretw <br /> Page Page 8 of 14 <br />