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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 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 Prot ID Ripon Unified School Sampled 01/27/99 <br /> 1117 Lone Palm Avenue Sample Descript RUSD-MW2-44 5 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix SOLID Extracted 02/03/99 <br /> Analysis Method EPA 8015 Mod Analyzed 02/03/99 <br /> tAttention Drew Van Allen Lab Number 9901E94-06 Reported 03124/99 <br /> C Batch Number SP0203998015EXA <br /> Instrument ID HP-313 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> I Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> ITEPH as Diesel 1 0 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 105 <br /> 1 <br /> Inalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> troject Manager Page 15 <br />