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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 /> �e <br /> Environ - - --- - --- Client Pro] ID Shell 6131 Pacific, Stockton Sampled 07/02/97 , <br /> 270 Perkins Ave Sample Descript SP-D Received 07/03/97 " <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/09/97 <br /> Analysis Method `8015Mod/8020 - Analyzed 07/09/971— ' <br /> Attention_ Joe_Nee[y _ - - Lab Number„9707162-04 - _ _ _ _ __Reported a7j17j97 <br /> QC Batch Number GC070897BTEXEXB - <br /> Instrument ID GCHP07 _ _ <br /> 07 Total P irgeable Petioleun 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 92 <br /> 4-Bromofluorobenzene 60 140 102 <br /> a <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> ell <br /> Mike Gregory <br /> Project Manager Page 5 <br />