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Sequoia 680 Chesapeake Dnv< Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />' Pacific Environmental Group Client Proj ID 311-174 1A/5447, Stockton Sampled 02/24/98 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP1-(A-B)comp Received 02/24/98 <br /> San Jose, CA 95110 Matrix SOLID Extracted 02/25/98 <br />' Analysis Method 8015Mod/8020 y Analyzed 02/26/96 Attention Jessica Nelligan Lab Number 9802F69-01 Reported 02126/98 <br /> OC Batch Number GCO22598BTEXEXA <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/K9 m9/Kg <br /> TPPH as Gas 1 0 N D <br /> Methyl t-Butyl Ether' 0 025 N D Benzene <br /> Toluene 00050 N D Ethyl Benzene 00050 N D0 0050 N D <br /> Xylenes (Total) 00050 N D <br />' Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 95 <br /> 4-Bromofluorobenzene 60 140 90 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> MA A <br /> od Granicher <br /> Project Manager Page 2 <br /> - r941 <br />