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Suite <br /> Sequoia <br /> 819 Striker Avenue 958 8 <br /> Sacramento CA 95834 <br /> i!D— (916)921-9600 <br /> FAX(916)92 1-0 100 <br /> 4RW Analytical <br /> www sequoialabs com <br /> Stratus Environmental Project ARCO 2168,Stockton,CA <br /> 3330 Cameron Park Drive,Ste 550 ProjectNumber 2168,Stockton,CA Reported <br /> Cameron Park CA,95682 ProjectManager Jay Johnson 06/21/02 12 35 <br /> Total Purgeable Hydrocarbons and STEX by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> AIW-6(5206169-01)Water Sampled 06/13/02 05 50 Received 06/13/02 12 10 <br /> Purgeable Hydrocarbons 34000 5000 ug/l 100 2060169 06/13/02 06/13/02 DHS LUFT <br /> Benzene 3600 50 " <br /> Toluene 1100 50 " <br /> Ethylbenzene 1300 50 " <br /> Xylenes(total) 4000 50 <br /> Surrogate a,a a-Trifluorotoluene T 97% 60-140 " <br /> MW-7(S206169-02)Water Sampled 06/13/02 05 30 Received 06/13/02 12 10 <br /> Purgeable Hydrocarbons 1400 50 ugA 1 2060169 06/13/02 06/13/02 DHS LUFT HC-12 <br /> Benzene 2 9 050 " <br /> Toluene 4 0 050 " <br /> Ethylbenzene 12 050 " <br /> .adLylenes(total) — 13 050 ā€ž <br /> irrogate a a a-Triuorotoluene 142% 60-140 S-02 <br /> MW-8(5206169-03)Water Sampled 06/13/02 06 46 Received 06/13/02 12 10 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2060169 06/13/02 06/13/02 DRS LUFT <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 <br /> Sur rogate a a a-Trifluorotoluene 86% 60-140 <br /> MW-813(SZ06169-04)Water Sampled 06/13/02 07 18 Received 06/13/02 12 10 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 2060169 06/13/02 06/13/02 DHS LUFF <br /> Benzene 12 050 C-07 <br /> Toluene ND 050 " <br /> Ethylbenzene 1 3 050 " C-07 <br /> Xylenes(total) 1 5 ---0 50 ā€ž--- -" ` C_07 <br /> Surrogate a a a-Trifluorotoluene 91% 60-140 <br /> equoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Thu analytical report must be reproduced to its entirety <br /> Page 2 of 12 <br />