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680 Chesapeake Dr1ve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 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 /> ATC Associates, Inc Client Prod ID Stockton Fire Station #2 Sampled 06/03/98 <br /> 1260 Graphics Drive Sample Descrlpt MW-2 Received 06/04/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID Extracted 06/14/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/15/98 <br /> Attention Jeanne Homsey Lab Number 9806259-02 Reported 06f 16f98 <br /> QC Batch Number GC0614980HBPEXY <br /> Instrument ID GCHP4A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L. <br /> TEPH as Diesel 50 88 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits% % Recovery <br /> n-Pentacosane (C25) 50 150 81 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> I <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 3 <br />