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l <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> • J 404 N Wtget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler RyanlGeostrategles Client Prol- ID's Unocal 5885, 180137 85- -' — Sampled-06/17/98- <br /> 6747 Sierra Court Suite J Sample Descnpt MW-1 Received 06/17/98 = <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/29/98 <br /> Attention Deanna Harding Lab Number 9806026-02 _ _ Reported fl7f09f98 <br /> 4C Batch Number GC062998802002A -- <br /> Instrument 1D HP-2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> OrPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) <br /> fl50 N <br /> hramatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlffuorotoluene 70 130 107 <br /> • <br /> • <br /> Oalytes reported as N D were not present above the stated limit of detec•icn <br /> SEQUOIA ANALYTICAL - ELAP 01271 <br /> r0anlcher <br /> t Manager Page 4 <br /> • <br />