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® 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia <br /> 404 N Wiget lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> ftL <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 igr <br /> 0 <br /> Gettler Ryan/Geostrategies Client Proa ID Unocal 6981, 7855 22 Sampled 12/08/97 <br /> 3164 Gold Camp Drive #240 Sample Descript MW-6 Received 12/09/97 <br /> Rancho Cordova, CA 95670 Matrix LIQUID <br /> Analysis Method EPA 8015 Mod Analyzed 12/12/97 <br /> Attention Steve Carter Lab Number 9712694-04 Reported 12J18197 <br /> QC Batch Number GC1209971SHSHSB <br /> Instrument ID GCV-01 <br /> Industrial Solvents <br /> Analyte Detection Limit Sample Results <br /> mg/L mg/L <br /> Methanol 1 0 N D <br /> Surrogates Control limits % % Recovery <br /> Pentanol RTX 200 55 157 91 <br /> Pentanol DBWAX 57 170 105 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> gory <br /> Project Manager Page 8 <br />