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1819 Striker Avenue, Suite 8 <br /> Sequoia Sacramento, CA 95834 <br /> (916) 921-9600 <br /> m%„f Analytical FAX{916}921 0100 <br /> 0 <br /> SECOR International Project: ARCO 4493,Stockton,CA Sampled: 6/17/99 <br /> 9912 Business Park Drive, Ste. 100 Project Number, 7G600-604-02 Received: 6117/99 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reported: 7/6/99 <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 �NWs- <br /> MWI <br /> 5906315-0I Water <br /> Purgeable Hydrocarbons 9060409 6/25/99 6/25199 50.0 ND ug/l <br /> Benzene 0.500 3.52 <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND <br /> Xylenes(total) 0.500 ND <br /> Methyl tert-butyl ether 5.00 895 <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 2670 % 1 <br /> MW2 $906315-02 )Fater <br /> Purgeable Hydrocarbons 9060409 6/25/99 6/25/99 50.0 ND ug/I <br /> Benzene 0.500 ND <br /> Toluene 0.500 ND " <br /> Ethylbenzene 0.500 ND <br /> 0 es(total) 0.500 ND <br /> 1 tert-butyl ether 5.00 ND <br /> Surrogate: a,a,a-Triuorotoluene 60.0-140 1.300 % 1 <br /> MW3 5906315-03 yyater <br /> Purgeable Hydrocarbons 9060360 6/24/99 6/24/99 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 tert-butyl ether 5.00 164 " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 94.9 % <br /> MW4 $966315-04 Water <br /> Purgeable Hydrocarbons 9060360 6/24/99 6/24/99 1000 10800 ug/l 2,13 <br /> Benzene 10.0 275 D <br /> Toluene 10.0 ND D <br /> Ethylbenzene 10.0 679 D <br /> Xylenes(total) 10.0 936 D <br /> Methyl tert-butyl ether 100 1060 D <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 105 % <br /> Sequoia Analytical-Sacramento 'Refer to end of report for text of notes and definitions. <br /> Page 2 of 21 <br />