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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(9Z5)%88-9673 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 44W Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 — <br /> SECOR International Project TOSCO 8671, Stockton,CA Sampled 1/27/99 to 1/28/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G888-010-03 Received 1/29/99 <br /> Sacramento,CA 95827 Project Manager Rusty Benkosky Reported 2/12/99 <br /> Total Purgeable Hydrocarbons(C6-C12),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 /> MW-1-16' S902029-03 sad <br /> Purgeable Hydrocarbons 9020031 2/2/99 2/2/99 1 00 ND mg/kg <br /> Benzene 000500 ND " <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 600-140 990 % <br /> MW-1-36' S902029-07 5931 <br /> Purgeable Hydrocarbons 9020029 2/2/99 2/2/99 1 00 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Ask4ethvl tert-butyl ether 00500 ND <br /> Surrogate a a a-Trifluorotoluene " 600-140 975 % <br /> MW-1-46' 5902029-09 59d <br /> Purgeable Hydrocarbons 9020029 2/2/99 2/2/99 1 00 ND mg/kg <br /> Benzene 000500 ND <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 600-140 100 % <br /> MW-2-16' 5902029-12 5411 <br /> Purgeable Hydrocarbons 9020029 2/2/99 2/2/99 1 00 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND <br /> Methyl ter-butyl ether 00500 ND <br /> Surrogate a a a-Trrfluorotoluene 600-140 102 <br /> MW-2-36- S90202 Sod <br /> Purgeable Hydrocarbons 9020045 2/3/99 2/3/99 1 00 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND <br /> Sequoia Analytical-Sacramento *Refer 10 end of report for text of notes and definitions <br /> Page 2 of 11 <br /> Sandra R Hanson,Client Services Representative <br />