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t \ Sequoia 680 Chesapeake Dave Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> �.� 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker 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-4-37 Deceived 02/22/96 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 02/27/96 <br /> Analysis Method 8015Mod/8020 Analyzed 02/28/96 <br /> Attention Joe Neely Lab Number 9602G24-02 Reported 03101196 <br />)C Batch Number GCO22796BTEXEXA <br /> nstrument lD GCHP18 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> mg/Kg m9/Kg <br /> TPPH as Gas - - 10 -- 35 <br /> Methyl t-Butyl Ether 0 025 N D <br /> Benzene 00050 0 013 <br /> Toluene 00050 013 <br /> Ethyl Benzene 00050 0 086 <br /> Xylenes (Total) 00050 074 <br /> Chromatogram Pattern C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 91 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br />*Gregory <br /> ct Manager Page 2 <br />