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680 Cheeapeake Drtve Redwood City CA 94063 (650)364-9600 FAX(650)3649233 <br /> l Sequoia 404 N Wiget lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> $19 Stoker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 4�- Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)79,2-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> s <br /> SECOR International Project Chevron 9-6258,Stockton,CA Sampled 4/6/99 to 417199 <br /> 9912 Business Park Drive,Ste 100 Project Number 7GO07-018-01 Received 418/99 <br /> Sacramento,CA 95827 Project Manager Roger Hoffmore Reported 4122/99 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by AHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Preeared Analyzed Limits Limit Result //nits Notes' <br /> MW-1 10' 5294159-02 5911 <br /> Purgeable Hydrocarbons 9040161 4/14/99 4114199 100 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trtuorotoluene 600-140 965 <br /> MW-1 Q 2.5! 5944159-05 Sad <br /> Purgeable Hydrocarbons 9040161 4/14/99 4/14/99 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trtuorotoluene 600-140 92 0 <br /> 5944159-09 59il <br /> Purgeable Hydrocarbons 9040161 4/14199 4/14/99 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a,a a-Triuorotoluene 600-140 89.5 <br /> MW-2 Q 10' S904159-17 - SAW <br /> Purgeable Hydrocarbons 9040161 4/14199 4114/99 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 101 <br /> M)Y 2 Qa 25' S904159-20 Sod <br /> Purgeable Hydrocarbons 9040169 4/15/99 4/15199 l 00 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 98 5 <br /> X45! S904159-24 Sgt! <br /> Purgeable Hydrocarbons 9040169 4/15199 4/15/99 l 00 ND mg/kg <br /> equoia Ansiytical-Sacramento -Refer to end of report for text of notes and definitions <br /> Sandra R Hanson,Client Services Representative Page 3 of 23 <br />