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np + r <br /> 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)968-9600 FAX(925)988-9673 <br /> N-0 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)792-0342 <br /> = ATC Associates, Inc Client Prod ID - KOK Realty 62581 0041 _ Sampled 06/19/98 <br /> 1260 Graphics Drive Sample Descript MW-3 Received 06/19/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID Extracted 06/25/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/26/98 <br /> ' Attention Tom Letterman _ Lab Number 9806EO1-02 Reported 06J30198 <br /> QC Batch Number GC06259801-113PEXB - - - - - - - - - - - - <br /> Instrument ID GCHP58 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel 50 87 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 93 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> t <br /> Project Manager Page 3 <br />