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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 (925)988 9600 FAX(92 5)988 9673 <br /> �,,,�► <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 /> i <br /> Delta Environmental Client Prol ID eXXON 7-3708, D093-809 Sampled 12/16/98 <br /> 3164 Gold Camp Drive #200 Sample Descript MW8 Received 12/16/98 <br /> Rancho Cordova CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/29/98 <br /> Attention Jim Brownell Lab Number 9812A76-08 Reported 01/04/99 <br /> QC Batch Number GC1 22998BTEX1 7A <br /> Instrument ID GCHP17 <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 15 <br /> Benzene 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 106 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ei Shin <br /> R ect Manager Page 8 <br />