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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 (510) 988 9600 FAX (510) 988 9673 <br /> Analytical 819 Striker Avenue Suitc 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br />! <br /> i Pacific Environmental Group Client Proj ID 311-174 1A/5447, Stockton Sampled 02/24/98 <br /> 2025 Gateway Place, Suite 440 Sample Descrlpt SP1-(A-B)comp Received 02/24/98 <br /> San Jose, CA 95110 Matrix SOLID M Extracted 02/25/98 <br /> i Analysis Method 8015Mod/8020 Analyzed 02/26/98 <br /> Attention Jessica Nelllgan Lab Number 9802F69-01 Reported 02j26198 <br /> OC Batch Number GCO225981BTEXEXA <br /> Instrument ID GCHP01 <br /> iTotal Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> img/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Methyl t-Butyl Ether 0 025 N D <br /> i Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> iChromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 95 <br /> i•4-Bromofluorobenzene 60 140 90 <br /> I <br /> I <br /> i <br /> i <br />! <br />! Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br />! <br /> '1 - <br />! Tod Granicher <br /> Project Manager Page 2 <br />! <br /> r�` - <br />