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Sequoia 680 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 /> 40 <br /> Gettler Ryan Geostrategles Client Prod ID Chevron 9-6171, Stockton Sampled 08/20/95 <br /> 6747 Sierra Court Suite G Sample Descript MW-4 Received 08/22/95 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/24/95 <br /> Attention Argy Leyton_ _ Lab-Number 9508P98-06 __ Reported 09J29J95 <br /> QC Batch Number GC082495BTEX02A <br /> Instrument ID GCHP02 <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 .. 50 610 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Discrete Peak .. .. C8-C9 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 81 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Wr�AgK <br /> ory <br /> Project Manager Page 9 <br /> rt <br />