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Sequoia 680 Chesapeake Drive 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 /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 <br /> Analytical (916) 921 9600 FAX(916)921-0100 I <br /> I <br /> Client Prof ID Shell 6131 Pacific, Stockton Sampled 07/02/97 <br /> 270 Perkins Ave Sample Descript SP-3 Received 07/03/97 ; <br /> Sonoma, CA 95476 Matrix SOLID Extracted 07/09/97 <br /> Analysis Method 8015Mod/8020 Analyzed 07/09/97 <br /> Attention Joe Neely Lab Number _9707162-03_ _ _ Reported 07117J97 <br /> CSC Batch Number GC07o8d7BTEX-EXB- µ - - --- --- <br /> Instrument <br /> _ --_Instrument 1D GCHP07 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas <br /> Benzene .. .... 5.0 ... .... ... ... 98 <br /> Toluene0 025 <br /> ND <br /> Ethyl Benzene ... <br /> .• •• '• "" 0.025 •- •- 0 092 <br /> 0 025 .. _ <br /> 0 24 <br /> . ... .. .. .. ... . .. . <br /> Xylenes (Total) 0 025 <br /> Chromatogram Pattern. .. .• .... • "• 2.3 <br /> .. .,.. ... .. C7-C12 <br /> Surrogates <br /> Control Limits% % Recovery <br /> Trifluorotoluene 70 130 91 <br /> 4-Bromofluorobenzene 60 140 150 0 <br /> I <br /> alytes reported as N D were not present above the stated limit of detection <br /> EQUOIA ANALYTICAL - ELAP #1210 <br /> k gory <br /> 3lect Manager <br /> Page 4 <br />