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' 680 Chesapeake Drive Redwood City CA 94063 <br /> � Sequoia (650} 364-9600 FAX(650) 364-9233 II <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 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 /> ATC Associates, Inc Client Prod ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW2-25 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID Extracted 02/03/99 <br /> Analysis Method EPA 8015 Mod Analyzed 02/04/99 <br /> IAttention Drew Van Allen Lab Number 9901E94-04 Reported 03/24Y99 <br /> C Batch Number SP0203998015EXA <br /> Instrument ID HP-3B <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> ITEPH as Diesel 20 770 <br /> Chromatogram Pattern <br /> Diesel & Non Diesel Mix <C14 <br />'Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 <br /> 1 <br /> 1 <br /> 1 <br /> 1'alytes reported as N D were not present above the stated 11MIt of detection <br /> EQUOIA ANALYTICAL - ELAP 41271 <br />�rolect Manager v Pae 11 <br /> s <br /> 1 <br />