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Sequoia 660 Chesapeake Drive Redwood City, CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 9600 FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suite a Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> } <br /> i <br /> " Enviros — Client Prod ID Shell Stockton ' " Sampled 09/18/97 ,'_ <br /> G. 270 Perkins Ave Sample Descript SS-1 B Received 09/19/97 <br /> Sonoma, CA 95476 Matrix SOLID Extracted 09/23/97 <br /> Analysis Method 8015Mod/8020 Analyzed 09/25/97 F, <br /> Attention J Gaarder " Lab Number 9709C12-02 - _ - Reported 0986197 <br /> ac Batch Number GCO92397BTEXEXC' - <br /> Instrument ID GCHP01 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte - _ � � �� WT-Detection Limit '� �� Sampie Results <br /> mg/Kg mg/Kg <br /> TPPH as Gas 1 0 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 94 <br /> 4-Bromolluorobenzene 60 140 71 <br /> a <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> M e gory t� <br /> Protect Manager Page <br />