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680 Chesapeake Dri-e Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N.WiSct Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-960o FAX(916)921-0 100 <br /> Analytical 1551 Industrial <br /> North,Ste, D San Carlos a.CA 940 0-41 11 (6 94954 50)232-9600 FAX(65)�3z 96865 FAX(707) 42 <br /> SECOR International Project: ARCO 4493,Stockton,CA Sampled: 4/13199 <br /> 9912 Business Park Drive,Ste. 100 Project Number- NIA Received: 4/14/99 <br /> Sacramento,CA 95827 Project Manager: Rusty Benkosky Reported: 4/28/99 <br /> Polychlorinated Biphenyls by EPA Method 8080A <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> XL-112' S904203-03 j <br /> PCB-1016 9040284 4/23/99 4128199 20.0 ND ug/kg <br /> PCB-1221 80.0 ND " <br /> PCB-1232 20.0 ND " <br /> PCB-1242 <br /> 20.0 ND <br /> PCB-1248 20.0 ND " <br /> PCB-1254 20.0 ND " <br /> PCB-1260 20.0 ND " <br /> Surrogate: TCMX " 40 0-140 107 <br /> Surrogate: DCB 40,0-140 102 <br /> 11 <br /> XL=ZQ2 <br /> X904203-04 54i1 <br /> PCB-1016 9040284 4/23199 4/28/99 20.0 ND ug/kg <br /> PCB-1221 0.0 ND <br /> „ <br /> PCB-1232 8 80.0 ND " <br /> 1242 20.0 ND <br /> -124$ 20.0 ND " <br /> PCB-1254 20.0 ND <br /> FCB-1260 20.0 ND " <br /> Surrogate: TCMX 40.0-140 105 % <br /> Surrogate: DCB 40.0-140 94.4 " <br /> oia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Sandra R. Hanson,Client Services Representative Page 5 of 19 <br />