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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (5 10) 988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (9 16) 921 0100 <br /> Gettler Ryan/Geostrategles-- - - -Client Prol- ID ~Chevron 9-6171, Stockton Sampled 11/11/97 _ <br /> 5747 Sierra Court Suite G Sample Descnpt MW-3 Received 11/11/97 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/20/97 - <br /> Attention_Deanna Harding Lab Number 97116104 8- _ _ _ _ Reported _11 f21 f97 _ <br /> istrumen# ID- GCHP2 -- <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 .. .. ... .. 74 <br /> Methyl t-Butyl Ether .. ... 2.5 .. ... .. 23 <br /> Benzene .. ... 050 .... .. ... ... 076 <br /> Toluene ... ....... . . ... 0.50 . ..... . ....... 1 1 <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) .. 050 .. ..... .. 1 4 <br /> Chromatogram Pattern <br /> Unidentified HC . .. ,.... . ..... ...... C6-C12 <br /> Discrete Peaks ..... . . .... .... . C6 <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 103 <br /> I <br /> Oalytes reported as N D were not present above the stated limit of detection <br /> i <br /> SEQUOIA ANA YT]CAL - ELAP #1894 <br /> I <br /> ory <br /> ct Manager Page 7 <br /> I <br /> I <br /> I <br /> 109, <br />