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• 680 Chesapeake Ddv- Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Se llUla 404 N WiSet lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 619 Striker Avenue Suite 9 Sacramento CA 95834 (916)921-9600 FAX(916)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 Chevron 9-6258, Stockton,CA Sampled 4/6199 to 4n199 <br /> 9912 Business Park Drive,Ste 100 Project Number 7GO07-018-01 Received 4!8199 <br /> Sacramento,CA 95827 Project Manager Roger Hoffmore Reported 4122199 <br /> Total Purgeable Hydrocarbons(C6-Cl2) and BTEX by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> IAnalyte Number PreEared Analyzed Limits Limit Result Units Notes* <br /> 5904159-24 sad <br /> Benzene 9040169 4115199 4115/99 000500 ND mg/kg <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trifluorotoluene 600-140 895 % <br /> MW-3 0 10' S904159-29 lkd <br /> Purgeable Hydrocarbons 9040169 4115199 4115199 100 ND mglkg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a,a a-Trifluorotoluene " 60 0-140 960 % <br /> S904159-32 S411 <br /> urgeable Hydrocarbons 9040169 4115199 4/15/99 1 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 /> MW-3 0 45' S904159-36 S" <br /> Purgeable Hydrocarbow 9040169 4115199 4/15/40 too 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 600-140 980 % <br /> �quoia Analytical-Sacramento �T 'Refer to end of report for text of nctes and def+nutons - <br /> Sandra R Hanson,Client Services Representative Page 4 of 23 <br />