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4 <br /> Sequoia 680 Chesapeake Dnve 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 /> �rrlll Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> s sss ss s s s i ' s s s ss i s s 's s s s ssin�s s s s u s i t 'ss <br /> Gettler Ryan/Geostrategies Client Proj ID Unocal/4707 Pacific Ave Sampled 09/25/96 s <br /> 3164 Gold Camp Drive #240 Sample Descript Inf Received 09/25/96 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> Analysts Method 8015Mod/8020 Analyzed 09/27/96 <br /> ,; Attention Greg Gurss Lab Number 9609E95-01 Reported, 09j30196 <br /> i <br /> QC Batch Number GC092796BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> i <br /> TPPH as Gas 1000 5300 <br /> Benzene 10 N D <br /> Toluene 10 160 <br /> Ethyl Benzene 10 140 <br /> Xylenes (Total) 10 1000 <br /> Chromatogram Pattern <br /> Weathered Gas C7-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 126 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP 771210 <br /> Oe7Gregory <br /> Project Manager Page t <br />