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Sequoia 680 Chesapeake Drive Redwood City,CA 940w (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,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> -Gettler=Ryan/Geostrategies Client Prol ID Unocal 6961, 4855 06 Sampled 10/28/96 <br /> 3164 Gold Camp Drive #240 Sample Descript Eff Received 10/29/96 , <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 10/30/96 <br /> ;I Attention Greg Gurss Lab Number 961=OH87-02 _ Reported 1 iJ01196j €=1 <br /> _ <br /> 0( Batch Number GC103096BTEX02A <br /> instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas ._ 10 18 <br /> Benzene 010 N D <br /> Toluene 0 10 013 <br /> Ethyl Benzene 0 10 013 <br /> Xylenes (Total) - - 0 10 - 0 68 <br /> Chromatogram Pattern . . Gas <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 108 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> egory <br /> Project Manager Page 2 <br /> r� <br />