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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N W1get Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 1119 Striker Avenue Swe 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)79Z-0342 <br /> ATC Associates, Inc Client Prol ID KOK Realty 62581-0001 Sampled <br /> 1260 Graphics Drive Sample Descript Method Blank Received 09/11/98 <br /> =; Modesto, CA 95351-1502 Matrix LIQUID Extracted 09/15/98 <br /> s Analysis Method EPA 8015 Mod Analyzed 09/18/98 <br /> 1 Attention Jeanne Homi ey ... Lab Number 9809733-06 Reported 09125j98 <br /> DC Batch Number GC0915980HBPEXZ <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 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 83 <br /> • <br /> Analytes reported as N ere not present above the stated limit of detection <br /> SEQUOIA ANAL 1CAL - ELAP 461210 <br /> y <br /> Project Manager Page 14 <br /> i <br />