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680 Chesapeake Drive Redwood City CA 94063 {650) 364 9600 FAX(650)364-9233 <br /> Sequoia <br /> 4114 N Wiget Lane Walnut Creek CA 94598 {925)988-9600 FAX(915)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)911-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 791-1865 FAX(707)791 0342 <br /> Gettler Ryan/Geostrategies Client Proj ID 140124 04 Sampled 06/30/98 <br /> 6747 Sierra Court Suite J Sample Descnpt Eff Received 07/02/98 <br /> Dublin, CA 94568 Matrix Alta <br /> Analysis Method 8015Mod/8020 Analyzed 07/02/98 <br /> Attention Deanna Harding Lab Number 9807095-02 Reported 07/12198 <br /> QC Batch Number GC070298BTEX02A <br /> Instrument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L u9/L <br /> TPPH as Gas 10 45 <br /> Benzene 0 10 N D <br /> Toluene 0 10 N D <br /> Ethyl Benzene 0 10 N D <br /> Xylenes (Total) 0 10 N D <br /> Chromatogram Pattern <br /> Unidentified HC C9-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 77 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> *3Granicher R <br /> Project Manager Page 2 <br />