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Sequoia 680 Chesapeake Drave 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) 92 i 9600 FAX (916)921 0100 <br /> Enviros Client Pro] ID Shell 2575 Country Club, Stck Sampled 01/02/97 <br /> 270 Perkins Ave Sample Descript MW-8-D Received 01/03/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 01/06/97 <br /> Analysis Method 8015Mod/8020 Analyzed 01/07/97 <br /> Attention Joe Neely Lab Number 9701119-06 _ Reported 01 JO9197 <br /> DC Batch Number GC010697BTEXEXA <br /> Instrument ID GCHP07 <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 200 960 <br /> Methyl t-Butyl Ether - - - 50 - - - t0 <br /> Benzene - ..-- -- 1 0 - - - -- - - 52 <br /> Toluene •- 1 0 -- - 15 <br /> Ethyl Benzene 1 0 16 <br /> Xylenes (Total) 1 0 75 <br /> Chromatogram Pattern .. C6-C12 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 121 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> rManager <br /> ectPage 6 <br />