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� A t <br /> 680 eke Drive Redwood City,CA 9406 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404�et lane Walnut Creek CA 94598(925)988-9600 FAX(925)988-9673 <br /> . � yy--11 a'l _}. r�+� 819 Striker Avenue,Suite 8 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 /> I80 <br /> ne Technical Services,Inc. Project: Equilon Enterprises Sampled: 1/28/99 <br /> Rogers Ave. ProjectNumber: 305 S.Hutchins,Lodi/990128-J1 Received: 2/2/99 <br /> Jose,CA 95112 Project Manager: FranThie Reported: 2/12/99 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov.Limits % Limit % Notes* <br /> Batch: 9020260 Date Prepared: 2/11199 Extraction Method: EPA 5030 waters <br /> Blank 9020260-BLK1 <br /> Gasoline 2/11/99 ND ug/l 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND " 0.500 <br /> Methyl tert-butyl ether ND1. 2.00 <br /> Surrogate: a,a,a-Trinuorotoluene 300 279 65.0-135 93.0 <br /> Surrogate: 4-Bromofluorobenzene 300 284 65.0-135 94.7 <br /> LCS 9020260-BSI <br /> Gasoline 2/11/99 1000 1100 ug/1 65.0-135 110 <br /> Surrogate: 4-Bromofluorobenzene " 300 197 65.0-135 99.0 <br /> x S ike 9020260-MSI P902048-01 <br /> line 2/11/99 1000 71.6 1060 ug/I 65.0-135 98.8 <br /> 'irrogate: 4-Bromofluoroben7ene " 300 293 65.0-135 97.7 <br /> Matrix Spike Dun 9020260-MSDI P902048-01 <br /> Gasoline 2/11/99 1000 71.6 1050 ugfl 65.0-135 97.8 20.0 1.02 <br /> Surrogate: 4-Bromofluorobenzene 300 301 " 65.0-135 100 <br /> uoia Analytical-Petaluma *Refer to end of reportfor text of notes and definitions. <br /> Page 8 of 14 <br />