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680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)3A-9233 <br /> Sequoia 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-%73 <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 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Is <br /> SECOR International Project: ARCO 4493,Stockton,CA Sampled: 2/24/99 to 2125/99 <br /> 9912 Business Park Drive,Ste 100 Project Number- N/A Received: 2126/99 <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 /> IW-11.5 S903005-01 SQii <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 1.00 2.72 mg/kg 1 <br /> Benzene 0.00500 0.0122 " <br /> Toluene 0.00500 0.0128 " <br /> Ethylbenzene 0.00500 0.00920 <br /> Xylenes(total) 0.00500 0.0321 " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate., a,a,a-Trifluorotoluene 60.0-140 93.0 % <br /> 12W-12 5903005-02 SQiI <br /> Purgeable Hydrocarbons 9030049 312/99 3/2/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbcnzenc 0.00500 ND " <br /> 1Wenes(total) 0.00500 ND <br /> yl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 99.5 % <br /> 13W-12 5903005-03 &2 <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 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 /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 99.5 % <br /> T3E-13 S903005-04 Soil <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 1.00 1.76 mg/kg 2 <br /> Benzene 0.00500 0.00986 " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 0.0242 " <br /> Xylenes(total) 0.00500 0.0397 " <br /> Methyl tert-butyl ether 0.0500 0.0610 " <br /> Surrogate: a,a,a-Trifluorotaluene 60.0-140 103 % <br /> T2E-12 S903005-05 SAW <br /> Purgeable Hydrocarbons 9030049 3/2/99 3/2/99 1.00 ND mglkg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> lenes(total) 0.00500 ND " <br /> -Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Sandra R.Hanson,Client Services RepresentativePage 3 of 21 <br /> Da <br />