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' 68D CNhesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 W1get Lane Walnut Creek.CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(9 16)92-0100 <br /> � Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)79Z-1865 fAX(707)792-0342 <br /> SECOR International Project TOSCO 8671,Stockton,CA Sampled 1127199 to 1/28/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G888-010-03 Received 1129/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 2112/99 <br /> Total Purgeable Hydrocarbons(C6-02), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Anal to Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW4-16'(continued) S902029-30 8911 <br /> Benzene 9020045 2/3/99 213199 000500 ND mg/kg <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND <br /> Methyl tert-butyl ether 00500 ND <br /> Surrogate a a,a-Trifluorotoluene 600-140 965 % <br /> MW-4-36' 5902029-34 S4t1 <br /> Purgeable Hydrocarbons 9020042 2/3/99 213/99 1 00 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene <br /> 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 0 00500 ND <br /> ethyl tert-butyl ether 0050 0 NDOr " <br /> rogate a a,a-Trifluorotoluene 600-140 975 % <br /> MW-446' S902029-36 X11 <br /> Purgeable Hydrocarbons 9020042 2/3/99 213199 1 00 ND mg/kg <br /> Benzene <br /> 000500 ND <br /> Toluene 000500 ND <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 0 00500 ND <br /> Methyl tert-butyl ether 0 0500 ND " <br /> Surrogate a a,a-Trifluorotoluene 600-140 <br /> 95 S <br /> S-1,23-4(Composite) 5902029-37 sari <br /> Purgeable Hydrocarbons 9020042 2/3/99 2/3/99 1 00 ND mglkg <br /> Benzene <br /> 000500 ND <br /> Toluene 000500 ND <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 0 00500 ND <br /> Methyl tert-butyl ether 0 0500 ND <br /> Surrogate a a a-Trifluoroioluene 600-140 <br /> 101 % <br /> equoia Analytical -Sacramento *Refer to end of report for text of toles and definitions <br /> Sandra R anson,Client Services Representative Page 4 of 1 l <br /> .Qt7, <br />