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1 � <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX (415) 364-9233 <br /> 404 N WEget Lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> „Gettler RyftGeostrategies Client Prol ID Chevron 9-6171, Stockton _ Sampled 02/24/97 <br /> 6747 Sierra CCourt Suite G Sample Descript MW-7 Received 02/25/97 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/28/97 - <br /> Attention Deanna Harding Lab Number 9702D34-02 _ Reported 03/05/97 <br /> QC Batch Number GCO22897BTEX06Aµ -- <br /> Instrument ID GCHP6 <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 50370 <br /> Methyl t-Butyl Ether .. ... 25 ..... N D <br /> Benzene 0.5039 <br /> Toluene .. ... 050 •---- .... <br /> Ethyl Benzene ---• -.... . .•-• 0.50 - .. 54 <br /> •- .... <br /> -• <br /> Xylenes (Total) ... • 050 -..... - - --•- i 0 <br /> 4s <br /> Chromatogram Pattern: ,,•, '. '. '' - - - <br /> ... ...... - - -•- Gas <br /> Surrogates Control Limits % % Recove <br /> Trifluorotoluene 70 130 78 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> VIAWregory <br /> 7jWt Manager Page 2 <br />