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Sequoia 680 Chesapeake Drive Redwood C+ty CA 94063 (650) 364-9600 FAX(650) 364 9233 <br /> 404 N Waget 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)911 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 707) 792 1865 FAX(707) 792 0342 <br /> Delta Environmental Client Prod ID eXXON 7-3708, D093-809 Sampled 12/16/98 <br /> 3164 Gold Camp Drive #200 Sample Descript MW3 Received 12/16/98 <br /> Rancho Cordova CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/30/98 <br /> Attention Jim Brownell Lab Number 9812A76-03 Reported 01/04f99 <br /> QC Batch Number GC123098BTEX03A <br /> Instrument ID GCHP03 <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 62 <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotol uene 70 130 75 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> 4 ei Shin <br /> Project Manager Page 3 <br />