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Sequoia 680 Chesapeake Drive Pedwood Cry CA 94053 (650) 364-%W FAX(650)364 9233 <br /> 404 N Viget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Analytical 919 Sinker Avenue,Suite 8 Saenmento, CA 95834 (916) 921-9600 FAX(916)921-0too <br /> :rte-.:.:.. _____ -- ---- - - --_ <br /> j:—Gettler Ryan�Geostrategies � �� Client Proj ID Unocal <br /> SS#55886 "-- - Sampled 03/25/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-1 Received 03/25/98 <br /> .41 Dublin, CA 94568 Matrix LIQUID <br /> 3 Analysis Method 8015Mod/8020 Analyzed 04/04/98 <br /> 1 Attention Deanna Harding_ -- _ _ Lab Number 9803G82-02 — Reported 04J08f98_ <br /> QC Batch Number GC040498802009A <br /> Instrument ID GCHP09 <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 <br /> fib <br /> Benzene <br /> Toluene 050 N D <br /> 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recove <br /> Trifluorotoluene 70 130 702 <br /> 9 <br /> 4nalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> AFQ011'ry <br /> Project Manager Page 4 <br />