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w Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 1AX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Crcck, CA 94598 (510) 988 9600 JAX(5I0)988 9673 <br /> Analytical 819 StrikerAvcnuc,Suite 8 Sacramento,CA 95634 (916) 921-9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategles Client Prod ID Unocal #6981, 7855 20 Sampled 02/27/97 , <br /> 3164 Gold Camp Drive #240 Sample Descrlpt lnf Received 02/28/97 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 02/28/97 "1 <br /> Attention Steve Carter Lab Number 9702E99-01 Reported 03/04/97 " <br /> DC Batch Number 6CO22897BTEX17A <br /> nstrument 1D GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas .. ... 100 1500 <br /> Benzene 1 0 N D <br /> Toluene ._ 1 0 3 4 <br /> Ethyl Benzene 1 0 32 <br /> Xylenes (Total) 1 0 260 <br /> Chromatogram Pattern <br /> Weathered Gas >C7 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 87 <br /> 0 <br /> nalytes reported as N D were not present above the stated lima of detection <br />;EQUOIA ANALYTICAL - ELAP ;' 1210 <br /> 1 egory <br />'rolect Manager Page 1 <br />