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• FAX 650 364-9233 <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 ( ) <br /> Sequoia 404 N Wlget Lane925 988-9673 <br /> Walnut Creek.CA 94598 (925)988-9600 FAX( ) <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)92i-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> »-- �""a'_-=.Z...`»»»=—s'...«: -- �s=sr <br />«Gettler Ryan1Geostrategles « Client Pray ID Chevron 9-6171, Stockton j - -� Sampled 08/17/98 <br />' 6747 Sierra Court Suite J Sample Descript MW-5 Received 08/18/98 = <br /> Dublin, CA 94568 Matrix LIQUID ed <br /> Analysis Method 8015Mod/8020 Analyzed 08/31/98 <br /> _ <br /> i Attention_ Deanna Harding _ _ _ Lab Number 98081324-02 _ ___ _ » » Reported 09J04/98 <br /> QC Batch Number GC083198802009A <br /> Instrument ID HP9 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas ... . ... 50 .. 140 <br /> Methyl t-Butyl Ether .. 25 .. ... as <br /> Benzene •- - •-- --. 0.50 - - - - 17 <br /> 050 N D <br /> Toluene <br /> 050 N D <br /> Ethyl Benzene <br /> 050 N D <br /> Xylenes (Total) <br /> Chromatogram Pattern >Cg <br /> Unidentified HC •- •• - - " " "" ' <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 126 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01271 <br /> acteryger Page 2 <br />