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Sequoia O 819 Striker Avenue Suite 8 1 <br /> 1 Sacramento CA X5834 <br /> (916) 921-9600 <br /> Analytical FAX(916)921-0100 <br /> 0 <br /> SECOR International Project ARCO 434 Lodi CA Sampled 6118/99 <br /> 9912 Business Park Drive,Ste 100 Project Number N/A Received 6/18/99 <br /> Sacramento,CA 95827 _ ___ _.—Project Project Manager==Rusty Benkosky= - - -- - --_=--Reported -7/6/99- - <br /> Total Purgeable Hydrocarbons(C6-Cl2),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Lint Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch. 9060408 Date Prepared, 6/28/99 <br /> B lan 9060408-BLK I <br /> Purgeable Hydrocarbons 6/28/99 ND mg/kg 1 00 <br /> Benzene ND 0 00500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 00500 <br /> Surrogate a,a,a-Triuorotoluene 0200 0 165 60 0-140 82 5 <br /> LCS 9060408-B S] <br /> Benzene 6/28/99 0200 0 21 1 mg/kg 70 0-130 105 <br /> Toluene 0200 0 219 700-130 109 <br /> Ethylbenzene 0200 0 215 70 0-130 108 <br /> Xylenes(total) 0 600 0 649 700-130 108 <br /> Methyl tert-butyl ether 0200 0 194 700-130 970 <br /> Surrogate a a a-Tri luorotoluene 0200 0 166 600-140 83 0 <br /> Matrix Spike 9-O.60408_MS1 S906335-04 <br /> Benzene 6/28/99 0200 ND 0 172 mg/kg 60 0-140 860 <br /> Toluene 0200 ND 0 176 60 0-140 880 <br /> Ethylbenzene 0200 ND 0 176 60 0-140 88 0 <br /> Xylenes(total) 0 600 ND 0 532 600-140 88 7 <br /> Methyl tent-butyl ether 0200 ND 0 174 60 0-140 870 <br /> Surrogate aaa-Trefluorotoluene 0200 0146 600-140 73 0 <br /> Matra Spike Dup 9060405_MSDI 5906335-04 <br /> Benzene 6/28/99 0200 ND 0 171 mg/kg 60 0-140 85 5 25 0 0 583 <br /> Toluene 0200 ND 0 167 600-140 83 5 25 0 5 25 <br /> Ethylbenzene 0200 ND 0 174 600-140 870 25 0 1 14 <br /> Xylenes(total) 0 600 ND 0 523 60 0-140 87 2 25 0 171 <br /> Methy!tert-butyl ether 0 200 ND 0 180 50 0-140 90 0 25 0 339 <br /> Surrogate aaa-Tr�uorotoluene 0 200 0 149 60 0-140 74 5 <br /> Rate Prepared 6/28199 Extraction MethQd. EPA 5030B(Me0H) <br /> Blank 9060414-BLK 1 <br /> Purgeable Hydrocarbons 6/28/99 ND mg/kg 1 00 <br /> Benzene ND 000500 <br /> Toluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether ND 0 0500 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> ,p Page 10 of 14 <br /> `eU' <br />