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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(925)988-9673 <br /> Analytical 819 Strlker 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 /> GettlerRyaniGeostrategies - Client Proj ID--Unocal-Former Facility#0187 –- Sampled 08/17%98 , <br /> 6747 Sierra ourt Suite J Sample Descript U-5 Received 08/17/98 -; <br /> 5 Dublin, CA 94588 Matrix LIQUID s <br /> 3 Analysis Method 8015Mod/8020 Analyzed 08/28/98 <br /> Attention Deanna Harding - _ _ __ _ Lab Number 9808A40-06 —_ -_ _ —Reported 09j20j98 <br /> Instrument ID HP5 <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 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 78 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Tod Granicher <br /> Project Manager Page 6 <br />