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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 /> 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)79Z-0342 <br /> ' ATC Associates, Inc Client Prot ID KOK Realty 62581 0001 Sampled <br /> 1260 Graphics Drive Sample Descript Method Blank Received 09/11/98 <br /> Modesto, CA 9535 1-1 502 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 09/21/98 <br /> '.Attention Jeanne Homsey Lab Number 9809733-06 __ __ _ Reported 09j25j98 <br /> QC Batch Number GC092198BTEX2IA <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 97 <br /> 0 <br /> Analytes reported as N D ere n t present above the stated limit of detection <br /> SEQUOI N YTiC L - ELAP #1210 <br /> Project Manager Page 13 <br />