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4:1 Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Iwo Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 0 <br /> Blaine Tech/Chevron Project Chevron Sampled 3/5/99 <br /> 1680 Rogers Ave Project Number 9-8632/990305-55 Received 3/10/99 <br /> San Jose,CA 95112 Project Manager Christine Lillie Reported 3/26/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015AV8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> MW-I P903291-01 <br /> Water <br /> Gasoline 9030428 3/18/99 3/18199 500 ND ug/l <br /> Benzene " " " 0 500 ND " <br /> Toluene " Or " 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 0 200 108 " <br /> Surrogate a a,a-Trifluorotoluene to 650-135 101 % <br /> Surrogate 4-Bromofluorobenzene 650-135 93 7 <br /> or <br /> MW-2 P903291-02 Water <br /> Benzene 9030428 3/18199 3/18/99 500 104 ug/l <br /> Benzene 0 500 12 0 " <br /> Toluene 0 500 ND " <br /> thylbenzene `' '' 11 0 500 8 16 " <br /> nes(tato/) 0 500 0 731 " <br /> thy[tert-butyl ether 2 00 52 4 " <br /> Surrogate a,a,a-Trrfluorotoluene " 650-135 102 <br /> Surrogate 4-Bromofluorobenzene to to or 650-135 953 <br /> MW-3 P903291-03 Water <br /> Gasoline 9030428 3/18/99 3/18/99 100 940 ug/l <br /> Benzene I00 189 " <br /> Toluene 1 00 999 " <br /> Ethylbenzene 1 00 59 7 " <br /> Xylenes(total) 1 00 716 " <br /> Methyl tert-butyl ether 400 698 " <br /> Surrogate a a a-Trifluorotoluene to or650-135 100 <br /> Surrogate 4-Bromofluorobenzene or Or650-135 980 4 <br /> MW4 P903291-04 Water <br /> Gasoline 9030428 3118/99 3/18/99 Soo 668 ug/l <br /> Benzene 0 500 208 " <br /> Toluene 0 500 735 " <br /> Ethylbenzene 0 500 175 " <br /> Xylenes(total) 0 500 35 2 " <br /> Methyl tert-butyl ether 200 434 " <br /> Surrogate a,a a-Trifluorotoluene 19 01 650-135 X101 <br /> Surrogate 4-Bromofluorobenzene 650-135 95 7 <br /> SUMP P903291-05 Water <br /> Gasoline 9030428 3/18/99 3/18/99 Soo ND ug/l <br /> uoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 2 of 9 <br />