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a 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 0 Sacramento CA 95834 (916)921-9600 FAX(916 )92! -010 0 <br /> �„� Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX 707 792-0342 <br /> Blaine Technical Services, Inc Project Shell Oil Co Sampled 1/26/99 <br /> 1680 Rogers Ave Project Number 141 N El Dorado, Stockton/990126-S2 Received 212199 <br /> San Jose,CA 95112 Project Manager Fran Thie Reported 2/12/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M <br /> Sequoia Analytical-Petaluma <br /> Batch Date Date Surrogate Reporting <br /> lAnalyte Number Prepared Analyzed Limits Limit Result Units Nates* <br /> RW-1 (continued) P902071-05 Water <br /> Benzene 9020174 2/8199 2/8/99 0 500 ND ug/l <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> Xylenes(total) 0 500 ND " <br /> Methyl tert-butyl ether 200 322 " <br /> Surrogate a a a-Trrfluorotoluene 650-135 110 % <br /> Surrogate 4-Bromofluorobenzene " " " 650-135 94 7 It <br /> RW-2 P902071-06 Water <br /> Gasoline 9020174 2/8/99 2/8/99 500 ND ug/l <br /> Benzene 0 500 ND " <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> *s(total) 0 500 ND <br /> I tert-butyl ether 200 275 <br /> Surrogate a a a-Trifluorotoluene 650-135 107 % <br /> Surrogate 4-Bromofluorobenzene 650-135 953 " <br /> MW-1 P902071-07 Water <br /> Gasoline 9020174 218/99 218/99 100 ND ug/l <br /> Benzene 100 ND " <br /> Toluene 100 ND " <br /> Ethylbenzene 100 ND " <br /> Xylenes(total) 1 00 ND " <br /> Methyl tert-butyl ether 4 00 504 " <br /> Surrogate a a a-Trifluorotoluene 650-135 98 3 % <br /> Surrogate 4-Bromofluorobenzene 650-135 92 0 11 <br /> MW-2 P902071-08 Water <br /> Gasoline 9020174 2/8199 2/8/99 500 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 2 00 119 " <br /> Surrogate a a,a-Trifluorotoluene 650-135 993 <br /> Surrogate 4-Bromofluorobenzene " " " 650-135 923 " <br /> MW-3 P902071-09 Water <br /> Gasoline 9020174 2/8/99 2/8199 500 ND ug/l <br /> *e 0 500 ND " <br /> Sequoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 3 of 10 <br />