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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creels,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 /> Client ProlID Shell 6131 Pacific, Stockton^ Sampled 09/16/97 in <br /> 270PerkinsAve Sample Descrlpt MW-5-41' Received 09/19/97 01 <br /> Sonoma, CA 95476 Matra SOLID Extracted 09/25/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/29/97 , <br /> Attention J Gaarder Lab Number 9709009-04 _ Reported_ 10j---a- _ <br /> DC Batch Number GC092597BTEXEXB <br /> nstrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 10 N D <br /> Benzene <br /> 00050 N D <br /> 0 0050 N D <br /> Toluene <br /> Ethyl Benzene 00050 N D <br /> Xylenes (Total) 0 0050 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 100 <br /> 4-Bromofluorobenzene 60 140 86 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Weo <br /> Project Manager Page 12 <br />