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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650) 364 9233 <br /> 4D 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Pacffic Environmental Group Client Prol ID 920-119 1A/9-6171, Stockton Sampled 12/23/97 <br /> 2025 Gateway Place, Suite 440 Sample Descript SP-1 Received 12/23/97 <br /> San Jose, CA 95110 Matrix SOLID Extracted 12/26/97 <br /> Analysis Method 8015Mod/8020 Analyzed 01/02/98 <br /> Attention Tim Anensen Lab Number 9712E29-06 Reported 01 J21 J98 <br /> OC Batch Number GC122697BTEXEX13 <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 112 <br /> 4-Bromofluorobenzene 60 140 102 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEOUOIA ANALYTICAL - ELAP 01210 <br /> Granicher <br /> Project Manager Page 13 <br />