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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 /> Analytical 1455 McDowell Blvd.North,Ste. D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industrial Road San Carlos,CA 94070-41 1 1 (650) 232-9600 FAX(650)232-9612 <br /> Pinnacle-C.P. Project: ARCO,5469,Stockton CA Sampled: 2/1 1/99 <br /> 3939 Cambridge Road,Ste. 220 Project Number: N/A Received: 2/12/99 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 3/1/99 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> FAnalyte Number Prepared Analyzed Limits Limit Result Units <br /> Notes* <br /> PL-11 (4')(continued) S902174-11 X411 <br /> Toluene 9020187 2/16/99 2/16/99 0.00500 0.0113 mg/kg <br /> Ethylbenzene 0.00500 0.0420 <br /> Xylenes(total) 0.00500 0.475 " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 89.0 % <br /> PL-12 W) S902174-12 S-Qtl <br /> Purgeable Hydrocarbons 9020177 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 94.0 % <br /> FL-13 W) S902174-13 SAW <br /> Purgeable Hydrocarbons 9020177 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 94.0 % <br /> PL-14(4 ') S902174-14 59E <br /> Purgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND <br /> Xylenes(total) 0.00500 ND " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 90.0 % <br /> PL-15(4.5') S902174-15 S4i1 <br /> Purgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 90.5 % <br /> P :16(5�) S902174-16 .51WPurgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> T/ <br /> 2onald W.Bobel,Client Services Re resentative Page 4 of 15 <br />