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'i• 680 ChesarwAke Drive Redwood City CA 94063 (650)3649600 FAX(650)3649133 <br /> 1 Sequoia 404 N Wiget Fane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-%00 FAX(9 16)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3/10/99 to 3111199 <br /> 9912 Business Park Drive,Ste 100 Project Number N/A Received 3112199 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 3/26/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> IAnalyte Number Prepared Analyzed Limits Limit Result Units :: Notes] <br /> BHDl Water <br /> Purgeable Hydrocarbons 9030252 3/19/99 3119199 500 432 ug/l I <br /> Benzene 0 500 102 " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 159 " <br /> Xylenes(total) 0 500 17.3 " <br /> Surrogate a,a,a-Trlfluorotoluene 600-140 98 8 % <br /> Methyl tert-butyl ether 9030284 3/22199 3122/99 250 263 ug/l D <br /> Surrogate a a,a-Triuorotoluene 600-140 93 8 % <br /> FM S903201-02 3x2ter <br /> Purgeable Hydrocarbons 9030252 3/19199 3/19/99 500 ND ug/l <br /> Benzene h 0 500 ND " <br /> Toluene 0 500 ND " <br /> OIhl.ylbenzcne <br /> 0 500 ND " <br /> enes(total) 0 500 ND " <br /> Methyl tert-butyl ether 500 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 93 4 % <br /> BHD2 S203201-03 Water <br /> Purgeable Hydrocarbons 9030252 3/19/99 3/19199 500 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 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 918 % <br /> MWA S903201-04 Wa1eT <br /> Purgeable Hydrocarbons 9030252 3//9/99 3/19/99 500 ND ug/I <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 500 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 92 6 % <br /> MW-3 S903201-05 W te[ <br /> Purgeable Hydrocarbons 9030252 3119199 3/19199 500 ND ug/l <br /> Benzene 0 500 0 555 " <br /> Toluene 0 500 171 " <br /> _mUthylbenzene 0 500 ND " <br /> equoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 2 of l 1 <br />