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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ` 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-034Z <br /> Gettler Ryan/Geostrategies Client Prol ID 6981/140124, 4707 Pacific Ave Sampled 11/20/98 <br /> , 3164 Gold Camp Drive 7240 Sample Descrlpt Eff Received 11/20/98 <br /> Rancho Cordova, CA 95670 Matrix AIR <br /> '= Analysis Method 8015Mod/8020 Analyzed 11/21/98 <br /> 3 Attention Steve Carter Lab Number 9811E17-02 Reported 12ID9198 <br /> QC Batch Number GC11219813TEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection L1mlt Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 10 22 <br /> Benzene 010 N D <br /> Toluene 010 N D <br /> Ethyl Benzene 010 N D <br /> Xylenes (Total) 010 N D <br /> Chromatogram Pattern <br /> Unidentified HC c6-c12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 84 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> lcher <br /> Project Manager Page 2 <br />