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u i V 4.1 <br /> 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-%00 FAX(925)988-9673 <br /> a- ) 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 /> • <br /> 41 ATC Associates, Inc - Client Prol ID KOK Realty 62581 0001 - - Sampled 09/11/98 <br /> 1260 Graphics Drive Sample Descript MW-4 Received 09/11/98 <br /> l Modesto, CA 95351-1502 Matrix LIQUID Extracted 09/15/98 <br /> Analysis Method EPA 8015 Mod Analyzed 09/18/98 <br /> ' Attention Jeanne Romsey - _ --Lab Number 9809733-02 Reported 09J25J98 <br /> QC 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 50 170 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 92 <br /> Analytes reported as N wer not present above the stated limit of detection <br /> SEQUOI N LYTI AL - ELAP #1210 <br /> Project Manager Page 5 <br />