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Sequoia680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Gettler RyanZGeostrategies Client Prol ID Chevron, 9-6171 Stockton Sampled 03/14/95 <br /> 6747 Sierra Court Suite G Sample Descript MW-4 Received 03/15/95 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/20/95 <br /> Attention Argy Leyton Lab Number 95031353-05 Reported 03129195 <br /> QC Batch Number GC032095BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 500 2700 <br /> Benzene 50 N D <br /> Toluene so N D <br /> Ethyl Benzene 5 0 N D <br /> Xylenes (Total) 5 0 N D <br /> Chromatogram Pattern <br /> Discrete Peak 1137-Ca <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 78 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> /1/y <br /> XA(Gregory <br /> Project Manager Page s <br />