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l Sequoia 819 Stnker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> AnalyticalFAX(916)921-0100 <br /> www sequoialabs com <br /> is <br /> Stratus Environmental Project ARCO 2186, Stockton, CA <br /> 3330 Cameron Park Drive, Ste 550 Sampled 6122/00 <br /> Project Number NIA Received 6/23/00 <br /> Cameron Park, CA 95682 Project Manager Jay Johnson <br /> Reported 7/5/00 <br /> BTEX by EPA Method 8260A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> VW-3-35(contmned) 5006318-05 Water <br /> Ethylbenzene 0060286 6/29/00 6/29/00 <br /> 00 227 ug/l <br /> Xylenes(total) 200 432 " <br /> Surrogate 17-DCA-d4 600-140 116 % <br /> Surrogate Toluene-d8 600-140 95 6 " <br /> Su)rogate 4-BFB 600-140 100 <br /> TB S006318-06 <br /> Water <br /> Benzene 0060286 6129100 6/29/00 200 3 44 ug/1 <br /> Toluene 2 00 ND " <br /> Ethylbenzene 2 00 ND " <br /> Xylenes(total) 200 ND " <br /> Surrogate 1 2-DCA d4 600-140 98 4 <br /> Surrogate Toluene-18 60 0-140 106 <br /> Sgate 4-BFB 600-140 912 " <br /> Se Analyttca[-Saceamento *Refer to end of report for text of notes and definitions <br /> Page 4 of 12 <br />