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1 <br /> 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)9a8-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <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 /> r <br /> TC Associates, Inc Client Prol ID Ripon Unified Schooi Sampled 01/27/99 <br /> El 17 Lone Palm Avenue Sample Descript RUSD-MW2-19 Received 01/29/99 <br /> odesto, CA 95351-1502 Matrix SOLID Extracted 02/03/99 <br /> Analysis Method EPA 8015 Mod Analyzed 02/04/99 <br /> t <br /> tention Drew Van Allen Lab Number 9901 E94-03 Reported 03/24199 <br /> Batch Number SP0203998015EXA <br /> Instrument ID HP-3A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Inalyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> CEPH as Diesel 50 150 <br /> hromatogram Pattern <br /> Diesel & Non Diesel Mix <C14 <br /> 4urrogates Control Limits % % Recovery <br /> -Pentacosane (C25) 50 150 Q <br /> r <br /> 1 <br /> 1 <br /> r <br /> 1 <br /> r <br /> Iaiytes reported as N 0 were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1271 <br /> i <br />�oject Manager Page 8 <br /> 1 <br />