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r I <br /> 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(925)988-9673 <br /> a Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (9r6)921 9600 FAX (916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792 1865 FAX (707)792 0342 <br /> ' Delta Environmental Client Prol ID Exxon 7-3708, D093-809 Sampled 10/05/98 <br /> 3164 Gold Camp Drive, #200 Sample Descript MW-1 Received 10/05/98 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/08/98 <br />_ Attention Jim Brownell Lab Number=9810472-01 Reported 10/14j98 <br /> - <br /> OC Batch Number GC1 00898BTEX1 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 11 <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xyfenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Triffuorotoluene 70 130 108 <br /> tl ! I <br /> OCT 19 1998 <br /> lay <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL ELAP #1210 <br /> ff4" <br /> Rei Shin <br /> ect Manager Page t <br /> .sem, <br />