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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9133 <br /> 404 N Wiget lane Walnut Creek, CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Stnker Avenue Suite a Sacramento CA 95834 (916) 911 9600 FAX (916)911 0100 <br /> 0 <br /> Gettler Ryan/Geostrategies Client Prod ID Chevron 9-6171, Stockton Sampled 02/12/96 <br /> 6747 Sierra Court Suite G Sample Descript MW-7 Received 02/13/96 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/16/96 <br /> Attention Deanna Harding Lab Number 9602848-02 Reported 02121196 <br /> QC Batch Number GCO21696BTEX22A <br /> Instrument ID GCHP22 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Lima Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 103 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Ao� <br /> Gregory <br /> sect Manager Page 2 <br />