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1 <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget 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 /> ATC Associates, Inc Client Prod ID Ripon Unified School Sampled <br /> 1260 Graphics Drive Sample Descript Method Blank Received 09/22/98 <br /> Modesto, CA 95351-1502 Matrix SOLID Extracted 09/24/98 <br /> Analysis Method EPA 8015 Mod Analyzed 09/25/98 <br /> IAttention Drew Van Allen Lab Number 9809E04-11 Reported 09J30J98 <br /> d-Batch Number GCO924980HBPEXA <br /> Instrument ID GCHP56 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br />'Analyte Detection Limit Sample Results <br /> mg/Kg m9/K9 <br /> ITEPH as Diesel 1 0 N D <br /> Chromatogram Pattern <br />,Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 55 <br /> 1 <br /> 1 <br /> 1 <br />(alytes reporter!as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br /> roject Manager Page 21 <br /> 1 <br />