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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX 4 <br /> AX(650)369233 <br /> 404 N WISet Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> $19 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 InCDoRoad <br /> II d North Ste b Petaluma C - C 94954 (707)94070-4111 (650)232-9 <br /> 865 FAX(707)79Z-034Z <br /> Analytical 1551Industrial <br /> 600 FAX(650)232-9612 <br /> r <br /> SECOR International Project Chevron 9-6258,Stockton,CA Sampled 4/15/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7GO07-018-01 Received 4116/99 <br /> Sacramento,CA 95827 Project Mana er Roger Hoffmore Reported 4130199 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> LAnalBatch Date Date Surrogate Reporting <br /> Ana! to Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-1 S904240-0I Water <br /> Purgeable Hydrocarbons 9040231 4120/99 4120/99 500 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 500 ND " <br /> Surrogate a a a-Tnfluorololuene 600-140 938 % <br /> MW--2 S904240-02 Water <br /> Purgeable Hydrocarbons 9040231 4/20/99 4120/99 500 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 /> AIMMethyl ten-butyl ether _ __ 500 ND <br /> arrogate a a a-Tnfluorotoluene 600-140 - �. 986 % <br /> M 'W— S904240-03 Water <br /> Purgeable Hydrocarbons 9040231 4/20/99 4/20/99 500 ND ug/1 <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 600-140 901 % <br /> '#eq,o,,Analytical-Sacramento *neje,to end ojreport for text of notes and deftnuw is <br /> t_�R 0 a� <br /> Sandra R Hanson,Client Services Representative Page 2 of 14 <br />