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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 /> ATC Associates, Inc Clent Proj la Stock Fire Stat #2 62574 0001 Sampled 12/22/98 <br /> 1117 Lone Palm Avenue Sample Descript MW-2 Received 12/23/98 <br /> Modesto, CA 9535 1-1 502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 01/04/99 <br /> Attention Jeanne Hornsey Lab Number 9812F36-02 Reported 01J08J99 <br /> QC Batch Number GC010499BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> e9/L ug/L <br /> TPPH as Gas 50 N D l <br /> Methyl t-Butyl Ether 2 5 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D `— <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Controi Limits % % Recovery <br /> Trifluorotoluene 70 130 93 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page 4 <br />