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819 Striker Avenue, Suite 8 <br /> O Sequoia Sacramento,CA.95834 <br /> (916)921-9600 <br /> D- Analytical FAX (916)921-0100 <br /> 0 <br /> EMCON/IT-Sacramento Project: ARCO 2186,Stockton,CA Sampled: 1213199 <br /> 1433 N. Market Blvd.,41 Project Number: 792232 Received: 1216199 <br /> Sacramento,CA 95834 Project Manager: Dave Foley Reported: 12/20/99 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical- Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed limits Limit Result Units Notes" <br /> MW-1 (74') 5912063-01 Water <br /> Purgeable Hydrocarbons 9120173 12/14/99 12/14/99 2500 15400 ug/l 1,D <br /> Benzene <br /> 25.0 552 D <br /> Toluene 25,0 155 D <br /> E 25.0 907 D. <br /> Ethylbenzene <br /> Xylenes(total) 2 2680 D <br /> Methyl tert-butyl ether " 12255 n 11 D <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 933.5.5 <br /> MW-2(74') S912063-02 Water <br /> Purgeable Hydrocarbons 9120172 12/13/99 12/13/99 50.0 ND ug/l <br /> Benzene 1. " 0.500 ND " <br /> Tolueneto .1 -0.500 ND " <br /> Ethylbenzene 0.500 ND <br /> Xylenes(total) 0.500 ND <br /> tort-butyl ether _ " " _ __�� 2.50 ND <br /> Su ate: a,a,a-Trifluorotoluene 60.0-140 945�� <br /> MW-3(731 5912063-03 Water <br /> Purgeable Hydrocarbons 9120172 12/13/99 12/13/99 50.0 ND ug/1 <br /> Benzene <br /> 0.500 ND " <br /> „ <br /> Toluene11 1 0.500 ND <br /> Ethylbenzene 11 0.500 NDtp <br /> " <br /> Xylenes(total) 0.500 ND <br /> Methyl tent-butyl ether '" 2'50 ND <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 98.0 <br /> MW4(64+) 5912063-04 Water <br /> Purgeable Hydrocarbons 9120172 12/13/99 12/13/99 50.0 64.1 ug/l 2 <br /> 0.500 ND <br /> Benzene <br /> Toluene 110.500 ND <br /> Ethylbenzene 0.500 ND <br /> 0.500 ND <br /> Xylenes(total) <br /> " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 100 <br /> Methyl tert-butyl ether 9120173 12/14/99 12/14/99 25.0 731 ug/l D <br /> Surrogate: a,a,a-Trifluorotoluene 11 0160.0-140 92.2 % <br /> VW-3(60') 5912063-05 Water <br /> Purgeable Hydrocarbons 9120172 12/13/99 12/13/99 50.0 80.4 ug/l 3 <br /> Benzene 0.500 ND <br /> Toluene " 0.500 ND <br /> Ethylbenzene 0.500 ND <br /> S a Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 2 of 9 <br />