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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)3649233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 8t9 Striker Avenue,suite 8 Sacramento.CA 95834 (916)921-9600 FAX(916)921-0 100 <br /> 455 McDowell Blvd. North,Ste, D Petaluma,CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> Analytical 1 <br /> t 551 Industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> is <br /> SECOR fnternational Project: ARCO 4493, Stockton,CA Sampled: 2/24199 to 2/25/99 <br /> 9912 Business Park Drive,Ste 100 Project Number N/A Received: 2/26/99 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reported: 3/5/99 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> L2-6(continued) 590300544 SQ.i.I <br /> Surrogate: a,a,a-Triucrotoluene 9030048 3/2/99 312199 60.0-140 95.0 % <br /> U--fi 5903005-15 SOB <br /> Purgeable Hydrocarbons 9030048 3/2199 312/99 1.00 1.64 mg/kg 5 <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Triuorotoluene 60.0-140 96.0 % <br /> LA--S S20945-1 Eau <br /> Purgeable Hydrocarbons 9030048 3/2/99 3/2/99 20.0 87.8 mg/kg 3,D <br /> 4 zene I. It 1. 0.100 ND D <br /> ene 0.100 ND D <br /> Ethylbenzene 0.100 1.46 D <br /> Xylenes(total) 0.100 9.43 D <br /> Methyl tert-butyl ether 1.00 ND D <br /> Surrogate: a,a,a-Triuorotoluene 60.0-140 100 % <br /> Dom,¢ S903005-17 &H <br /> Purgeable Hydrocarbons 9030049 3/2/99 312/99 1.00 5.78 mg/kg 2 <br /> Benzene " " 0.00500 ND " <br /> Toluene 0.00500 0.0165 " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 0.0187 " <br /> Methyl tert-butyl ether 0.0500 0.0787 " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 99.0 % <br /> L-L-(t 5200518 %W <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 1.00 3.30 mg/kg 2 <br /> Benzene 0.00500 0.0128 " <br /> Toluene 0.00500 0.0245 " <br /> Ethylbenzene 0.00500 0.0511 " <br /> Xylenes(total) 0.00500 0.147 " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 97.0 % <br /> PG-1 5903005-19 s1w <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 1.00 5.06 mg/kg 2 <br /> nzene 0.00500 0.0226 " <br /> equoia Analytical -Sacramento "`Refer to end of report for text of notes and definitions. <br /> Sandra R. Hanson,Client Services Representative Page 6 of 21 <br />