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- r <br /> ■ Sequoia 680 Chesapeake Dnvc Redwood City,CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suiae 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> Gettler Ryan/Geo-strategies Client=Pro! ID Unocal 0187/Stockton Sampled 07/31/95 - <br /> 3035 Prospect Park Drive #110 Sample Descript U-7 Received 08/01/95 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/04/95 <br /> „ Attention Greg Gurss Lab Number 9508004-04 Reported 08/08195 i <br /> _ <br /> QC Batch Number GC0803956TEX21A - <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 500 5400 <br /> Benzene - 5.0 620 <br /> Toluene 5 0 200 <br /> Ethyl Benzene - 5 0 - <br /> Xylenes (Total) 50 - 290 <br /> _ <br /> 430 <br /> Chromatogram Pattern Gas <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 70 <br /> 0 <br /> 4nalytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> dlike Gregory <br />'roject Manager Page 4 <br />