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Suite <br /> Sequoia <br /> eq �oia 819 arra Avenue, 958. 8 <br /> l.� Sacramento, C,4 95834 <br /> (916)9Z7-9600 <br /> Analytical Fw.sequ} 9abs.co2 1 0 <br /> vwvw.sequoialabs.com <br /> Stratus Environmental Project: ARCO 5469,Stockton,CA Sampled. 6/23100 <br /> 3330 Cameron Park Drive,Ste.550 Project Number: NIA Received: 6/23/00 <br /> Cameron Park,CA 95682 Project Manager: Jay Johnson Reported: 7/10100 <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 /> MW-1 5006324-01 Water <br /> Benzene 0060288 713100 713100 2.00 ND ug/1 <br /> Toluene 11 " 2.00 ND " <br /> Ethylbenzene 112.00 ND " <br /> Xylenes(total) 2.00 ND _ <br /> Surrogate: 1,2-DCA-d4 60.0-140 99.6 % <br /> Surrogate: Toluene-d8 60.0-140 101 <br /> Surrogate: 4-BFB 60.0-140 90.4 " <br /> MW-2 S006324-02 Water <br /> Benzene 0060288 7/3100 713100 2.00 ND ug/l <br /> Toluene 112,00 ND " <br /> Ethylbenzene 2.00 ND " <br /> Xvlenes(total) 200 ND " <br /> rogate: 1,2-DCA-d4 60.0-140 110 <br /> 'rogate: Toluene-d8 60.0-140 102 <br /> Surrogate: 4-BFB 60.0-140 95.6 <br /> MW-3 S006324-03 Water <br /> Benzene 0060288 713100 7/3100 2.00 ND ug/I <br /> Toluene 11 1. 1. 2.00 ND " <br /> Ethylbenzene n 2.00 ND " <br /> Xylenes(total) 2.00 ND <br /> Surrogate: 1,2-DCA44 60.0-140 116 % <br /> Surrogate: Toluene-d8 60.0-140 102 " <br /> Surrogate: 4-BFB 60.0-140 94.4 <br /> MW-4 S006324-04 Water <br /> Toluene 0060288 713100 713100 2.00 ND ug/l <br /> Ethylbenzene 11 11 112.00 6.70 " <br /> Xylenes(total) 2.00 66.0 " <br /> Surrogate: 1,2-DCA-d4 60.0-140 116 % �Y <br /> Surrogate: Toluene-d8 60.0-140 99.2 " <br /> Surrogate: 4-BFB " 60.0-140 97.6 <br /> Benzene 0070016 716100 7/6100 10.0 1470 ug/l D <br /> Surrogate: 1,2-DCA-d4 11 11 1160.0-140 86.8 % <br /> Surrogate: Toluene-d8 11 1160.0-140 110 " <br /> Surrogate: 4-BFB 60.0-140 94.0 11 <br /> MW-5 5006324-05 Water <br /> Benzene 0060288 7/3100 7/3/00 2.00 ISTD ug/l <br /> Beene 2.00 ND " <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 3 of 13 <br />