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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> 819 Strike,Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)911 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)79Z-1865 FAX(707)792-0342 <br /> 11551 Industrial Road San Carlos CA 94070-4111 (650) 232 9600 FAX(650}232-9612 <br /> SECOR International Project ARCO 2133,Stockton,CA Sampled 3/18/99 <br /> 9912 Business Park Drive,Ste 100 Project Number 7G600-019-04 Received 3/18/99 <br /> Sacramento,CA 95827 Pro ect Manager Rusty Benkosky Re orted 4/l/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 Notes* <br /> T-3 W-15' S903,25501 <br /> X411 <br /> Purgeable Hydrocarbons 9030338 3/26/99 3/26/99 500 690 mg/kg 1,D <br /> Benzene 0 250 0 692 D <br /> Toluene 0 250 1 62 D <br /> Ethylbenzene 0 250 ND D <br /> Xylenes(total) 0 250 2 86 D <br /> Surrogate a a a-Trifluorotoluene 600-140 98 0 % <br /> T-3 E-15' S903255-02 X 1 1 <br /> Purgeable Hydrocarbons 9030338 3/26/99 3/26/99 1 00 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene 000500 ND <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> gale a a a-Trifluorotoluene 600-140 990 % <br /> lk- <br /> X903255-03 SDA <br /> Purgeable Hydrocarbons 9030338 3/26/99 3/26/99 1 00 ND mg/kg <br /> Benzene 000500 ND " <br /> Toluene 000500 ND " <br /> Ethylbenzene 000500 ND <br /> Xylenes(total) 000500 ND <br /> Surrogate a a a-Trifluorotoluene 600-140 92 0 % <br /> PL-9-2.5' S903255-04 sad <br /> Purgeable Hydrocarbons 9030338 3126/99 3/26/99 1 00 ND mg/kg <br /> Benzene 000500 ND <br /> Toluene 000500 ND <br /> Ethylbenzene 000500 ND " <br /> Xylenes(total) 000500 ND " <br /> Surrogate a a a-Trtfluorotoluene 600-140 975 % <br /> PL-10-2.5' 5903.25.5-05 5-" <br /> Purgeable Hydrocarbons 9030338 3/26/99 3/26/99 500 26 1 mg/kg 1,D <br /> Benzene 00250 0 298 D <br /> Toluene 00250 0 780 D <br /> Ethylbenzene 00250 0 185 D <br /> Xylenes(total) 00250 3 58 D <br /> Surrogate a a a-Trifluorotoluene 600-140 98 0 % <br /> PL-11-3.5' 5903255-06 ska <br /> P eable Hydrocarbons 9030338 3/26/99 3/26/99 1 00 ND mg/kg <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and definitions <br /> Sandra R TWnson,Chent Services Representative Page 2 of I 1 <br />