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4D Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(5t0)988 9673 <br /> Rp Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 <br /> (916) 921 9600 FAX(916) 921 0100 <br /> Cambria Environmental-Oakland Project Shell,341 East Main St,Ripon CA Sampled 7/15/98 <br /> 1144 65th Street, Ste C Project Number N/A Received 7/17/98 <br /> Oakland,CA 94608 Project Manager Owen Ratch a Reported 8/3/98 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> "Anala Number Prepared Analyzed Limits Limit Result Units Notes* <br /> Cl-S-31 (continued) 5807204-06 &A <br /> Benzene 8070351 7/28/98 7/28/98 000500 ND mg/kg <br /> Toluene 000500 ND <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND ' <br /> Surrogate a a a-Trifluarotoluene - 600-140 105 % <br /> C1-S-34.5 5807204-07 5411 <br /> Purgeable Hydrocarbons 8070351 7/28/98 _ 7/28/98 __ 100 ND mg/kg t <br /> Benzene _ 000500 i ND " <br /> Toluene It <br /> 000500 ND " <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 103 % <br /> C1-S-38.5 SE 04-08 <br /> 5911 <br /> Purgeable Hydrocarbons 8070351 7/28/98 7/28/98 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND <br /> Ethyltenzene 0 00500 ND " <br /> Xylenes(total) "T 000500 ND " <br /> Surrogate a a a-Trifluorotoluene " " " 600-140 101 % <br /> C1-S45 S80720"9 SDA <br /> Purgeable Hydrocarbons 8070351 7/28/98 7/28/98 100 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene '1 000500 ND ' <br /> Ethylbenzene It <br /> " " 000500 ND " <br /> i Xylenes(total) It 11 „ <br /> 000500 ND <br /> Surrogate aa a-Trifluorotoluene 600-140 100 % ' <br /> r <br /> Sequoia Analytical-Sacramento '"Refer to end of report for text of notes and definitions <br /> / 1,rrida C Schneider,'Laboratory Director Page 3 of 16 ' <br />