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M` <br /> 41) Sequoia 680 Chesapeake Drive 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 /> qcv Analytical 819 Striker Avenue,Suite a Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> r <br /> Gettler Ryan/Geostrategies Client Prol ID »Unocal 4707 Pacific Ave-6981 Sampled 01/24/96 L' <br /> r 3164 Gold Camp Drive #240 Sample Descript INF Received 01/25/96 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 01/25/96 <br /> ' Attention Greg Gurss Lab Number 9601 F73-02 Reported 01 J29J96 i'f <br /> QC Batch Number GC01 2596BTEX1 7A <br /> instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas ... 500 5700 <br /> Benzene 5 0 56 <br /> Toluene 50 .. 540 <br /> Ethyl Benzene .. 50 .. .. 89 <br /> Xylenes (Total) .. 5.0 .. 440 <br /> Chromatogram Pattern <br /> Gas & Unidentified HC .. . .. cC8 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 109 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> 'lor I/ <br /> Gregory <br /> Project Manager Page 2 <br />