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K1 <br /> 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)988-9600 FAX(925)988-9673 <br /> 4Iwo Analytical 8t9 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9d1 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792 1865 FAX(707)792 0342 <br /> ATC Associates, Inc _- _ Client Prof ID KOK Realty 62581 0001 Sampled - - <br /> 1260 Graphics Drive Sample Descript Method Blank Received 09/11/98 <br /> Modesto, CA 95351-1502 Matrix SOLID Extracted 09/15/98 <br /> Analysts Method 8015Mod/8020 Analyzed 09/15/98 <br /> 'Attention Jeanne Hornsey Lab Number 9809733-07 Reported 09j25198 <br /> QC Batch Number GC0915988TEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg m9/Kg <br /> TPPH as Gas 1 0 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 0 00E0 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatcgram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 99 <br /> 4-Bromcflucrcbenzene 60 140 80 <br /> i <br /> Analytes reported as N D re ni it present above the stated limit of detection <br /> SEQUOIA A YTIC L - ELAP #1210 <br /> Project Manager Page 16 <br />