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Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364-9600 FAX(415) 364 9233 <br /> 4T) 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> 4l) Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921. 9600 FAX(916)921 0100 <br /> Envlros Client Prol ID Shell 4315 Waterloo, Stockton Sampled 02/21/96 <br /> 270 Perkins Ave Sample Descript SB-2-9 Received 02/23/96 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/29/96 <br /> Analysis Method 8015Mod/8020 Analyzed 02/29/96 <br /> Attention Joe Neely Lab Number 96021-191-03 Reported 03122196 <br /> QC Batch Number GCO22996BTEXEXA <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Methyl t-Butyl Ether 0 025 097 <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 70 130 127 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Gregory <br /> ct Manager Page 5 <br />