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} <br /> ' r ' Sequoia 680 Chesapeake,Drive Rcdwood City, CA 94063 (415) 364 9600 1A(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 ]AX(510)988 9673 <br /> Analytical 819 StnkerAvenuc,Suite 8 Sacramento,CA 95834 (916) 921-9600 rAX(916)921 0100 <br /> Gettler Ryan/Geostrategles Client Prof ID Unocal 6981, Pacific Ave Sampled 06/24/97 <br /> 3164 Gold Camp Drive #240 Sample Descript Inf Received 06/25/97 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 06/26/97 ' <br /> Attention Greg Gurss Lab Number 9706C85-02 Reported 07/01197 = <br /> fC Batch Number GCO62697BTEX03A <br /> istrument 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 - - - 500 1800 <br /> Benzene 5 0 N D <br /> Toluene 5 0 N D <br /> Ethyl Benzene - ••• - 5 0 -- 28 <br /> Xylenes (Total) .. 5 0 280 <br /> Chromatogram Pattern <br /> Weathered Gas C8-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 106 <br /> 0 <br /> analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ft gory Page 2 <br />'rofect Manager <br />