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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415)364 9233 <br /> ���••••`�����iii 404 N Wiget bane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> Gettler Ryan/Geostrategies Client Proj ID� Unocal 0187/Stockton Sampled 07/31/95 <br /> 3035 Prospect Park Drive #1 t 0 Sample Descript U-8 Received 08/01/95 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/08/95 <br /> Attention Greg Gurss Lab Number 9508004-05 Reported 08f08/95 <br /> i i <br /> QC-Batch Number GC080795BTEX03A <br /> Instrument ID GCHP03 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas _ _ 50 100 <br /> Benzene 050 73 <br /> Toluene 050 N D <br /> Ethyl Benzene - 050 065 <br /> Xylenes (Totai) - 050 1 0 <br /> Chromatogram Pattern Gas <br /> Unidentified HC _ - <C8 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 104 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Mike Gregory <br /> project Manager Page 5 <br />