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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> a- ) 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue.Suite 8 Sacramento CA 95934 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler RyanjGeostrategies - Client Prod ID ^Unocal SS#5417, 180179 85- ---- Sampled- 11/23/98 <br /> 6747 Sierra ourt Suite J Sampie Descript MW-3 Received 11/23/98 =- <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 12/02/98 , <br /> Attention Deanna Harding_ - _ Lab Number 9811A00-04 _ Reported 12f17J98 <br /> bt-BYtiati Number GC120298802005A _ -- - - - - --- -- - ------ ----- —- -- -- - <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 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recove <br /> Trlfluorotoluene 70 130 102 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> ir <br /> We <br /> ect Manager Page 7 <br />