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Sequoia 404 Chesapeake Redwood City CA 94 (650)364-9600 FAX(650)364-9233 <br /> 4D404 N Wiget Lanea Walnut Creek,CA 9459898 (925}98$-9600 FAX(925)988-9673 <br /> ' 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)79Z-1865 FAX(707)792-0342 <br /> Bfalne Tech Services Client Prol ID Chevron 9-4275/990310-Z1 Sampled 03/10/99 <br /> 1680 Rogers Avenue Sample Descript MW2 Received 03/11/99 <br /> San.lose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 03/23/99 <br /> Attention Christine Lillie Lab Number 9903653-02 Reported 03f26J99 <br /> QC Batch Number GC032399BTEX02A <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 2000 9700 <br /> Methyl t-Butyl Ether 100 200 <br /> Benzene 20 220 <br /> Toluene 20 N D <br /> Ethyl Benzene 20 870 <br /> Xylenes (Total) - - 20 - 400-Chromatogram Pattern GAS <br /> Surrogates Control Limits % % Recovery <br /> Trltluorotoluene 70 130 116 <br /> Analytes reported as N D were not present above the-stated limit of detection w W <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> *ei Shln <br /> Manager Page 2 <br /> I <br /> I <br /> r� <br />