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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9213 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> (-T-N <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Enviros Client Prol ID Shell 4315 Waterloo, Stockton Sampled 02/21/96 <br /> 270 Perkins Ave Sample Descript SB-1-30 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 96021-191-02 Reported 03122196 <br /> DC 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 22 <br /> Benzene 00050 N D <br /> Toluene 00050 N D <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 00050 00062 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 124 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> M&Gregory <br /> F ct Manager page 4 <br />