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819 Striker Avenue, Suite 8 <br /> Sequoia Sacramento, CA 95834 <br /> i!D <br /> Analytical `916) 921-9600 <br /> FAX{916} 921-0100 <br /> EMCON/Pinnacle-Sacramento Project: ARCO 2186,Stockton,CA Sampled: 9/10199 <br /> 1433 N.Market Blvd, Project Number: 792232 Received: 9/13/99 <br /> Sacramento,CA 95834 Project Manager: Dave Foley Reported: 9/27/99 <br /> Total Purgeable Hydrocarbons(C6-Cl 2),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(73') 5909157-01 Water <br /> Purgeable Hydrocarbons 9090223 9121/99 9/2//99 5000 22800 ug/l 1,D <br /> Benzene 50.0 941 D <br /> Toluene 50.0 1180 D <br /> Ethylbenzene 50.0 1410 D <br /> Xylenes(total) 50.0 4450 D <br /> Methyl tert-butyl ether 500 2590 D <br /> Surrogate: a,a,a-Triuorotoluene 60.0-140 87.9 <br /> MW-2(74') S909157-02 Water <br /> Purgeable Hydrocarbons 9090195 9/20/99 9/20199 50.0 ND ug/1 <br /> Benzene " . 0.500 ND " <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND " <br /> Xylenes(total) 0.500 ND " <br /> 1 tert-butyl ether 5.00 ND <br /> gate. a,a,a-Trifluorotoluene " 60.0-140 102 % <br /> MW-3(73') S909157-03 Water <br /> Purgeable Hydrocarbons 9090195 9/20/99 9/20/99 50.0 ND ug/l <br /> Benzene 0.500 ND " <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND " <br /> Xylenes(total) 0.500 ND " <br /> Methyl tent-butyl ether 5.00 ND " <br /> Surrogate: a,a,a-Trifluorotchiene 60.0-140 102 % <br /> MW4(61') 5909157-04 Water <br /> Purgeable Hydrocarbons 9090223 9/21199 9/21199 50A 213 ug/l 2 <br /> Benzene 11 <br /> " " 0.500 1.48 <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND " <br /> Xylenes(total) " " 0.500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene ri rf60.0-140 97.0 % <br /> Methyl tert-butyl ether 9090195 9120199 9/20/99 50.0 1100 ug/l D <br /> Surrogate: a,a,a-Triuorotoluene " " 60.0-140 98.4 % <br /> VW-3(60') S909157-05 Water <br /> Purgeable Hydrocarbons 9090195 9/20/99 9/20/99 50.0 1210 ug/l 1 <br /> Benzene " " " 0.500 54.6 " <br /> Toluene 0.500 ND " <br /> Ethylbenzene " 0.500 54.5 " <br /> is Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 2 of 9 <br />