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Sequoia 680 Chesapeake Drive Redwood Cly CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Straker 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 /> ATC Associates, Inc Client Proj ID KOK Realty 62581 000i - Sampled 06/19/98 , <br /> 1260 Graphics Drive Sample Descript MW-1 Received 06/19/98 <br /> Modesto, CA 95351-1502 Matrix LIQUID Extracted 06/25/98 <br /> Analysis Method EPA 8015 Mod Analyzed 06/27/98 <br /> _Attention Iom Lutterman Lab Number 9806E01-01 _ Reported 06f30198 <br /> QC-Batch Numk er GC06259801-113PEXB = - - --- -- - - - — -- - - - - --- -- - - -- -- - - - - <br /> Instrument ID GCHP513 <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TEPH as Diesel Soo .. 8500 <br /> Chromatogram Pattern <br /> Weathered Diesel .. .. C9-C24 <br /> Surrogates Control Limits % % Recovery <br /> n-Pentacosane (C25) 50 150 150 <br /> • <br /> Analytes reported as N D were not present above the stated Ilmlt of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Project Manager Page t <br />