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Se q l101a 680 Chesapeake Drive Redwood City CA 94063 (650)364`9600 FAX(650)364-9233 <br /> Wl404 N get lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategles «- Client Proj «ID _ Unocal SS#0123 -«~ _ Sampled 09/28/98 <br /> 6747 Sierra Court Suite J Sample Descrlpt U-3 Received 09/28/98 , <br /> Dublin. CA 94568 Matrix LIQUID -_ <br /> Analysis Method 8015Mod/8020 Analyzed 10/06/98 <br /> Attention Deanna Harding _ « Lab Number_9809H50-04 Reported 11J10J98 <br /> QC Batch Number GC100698BTEX21 A <br /> Instrument ID GCHP21 <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 N D <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 /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 83 <br /> is <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> RoGranicher <br /> ject Manager Page 12 <br />