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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)921-0 100 <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 11 (650)232-9600 FAX(650)232-9612 <br /> Pinnacle-C.P. Project: ARCO,5469, Stockton CA Sampled: 2/11/99 <br /> 3939 Cambridge Road,Ste. 220 Project Number: N/A <br /> Cameron Park,CA 95682 Received: 2/12/99 <br /> 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 /> Analyte Number Prepared Analyzed Limits Limit Result Units <br /> ___Note <br /> PL-1(4) S902174-01 S4ll <br /> Purgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 ND mg/kg <br /> Benzene „ <br /> Toluene <br /> 0.00500 ND " <br /> Ethylbenzene <br /> 0.00500 0.00522 " <br /> " <br /> Xylenes(total) 0.00500 ND <br /> 0.00500 0.0113 " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 <br /> PL-2(3.5') S902174-02 X4.11 <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) <br /> 0.00500 0.0137 " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 <br /> M-3( . ') 5902174-03 SAW <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-Trifluorotoluene 60.0-140 92.0 % <br /> PL-4(3.3') S902174-04 <br /> Purgeable Hydrocarbonsso <br /> 9020187 2/16/99 2/16/99 1.00 7.32 mg/kg 1 <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 0.00766 " <br /> Xylenes(total) 0.00500 0.0132 " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-14092.0 % <br /> PL-5(4) S902174-05 5411 <br /> Purgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 3.57 mg/kg I <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 91.5 % <br /> PL-6(4) 5902174-06 5411 <br /> Purgeable Hydrocarbons 9020187 2/16/99 2/16/99 1.00 ND mg/kg <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and definitions. <br /> Donald W. Bobel,Client Services Representative Page 2 of 15 <br />