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Sequoia 680 Chesapeake C�nvr Redwood City CA 94063 (550) 364 9600 <br /> FAX (650)364 9233 <br /> Sequoia <br /> 404 N Wiget I-ane VL'ainut Creek CA 945 39 510 988 96l)O FAX (510) 988 9673 <br /> 0100 <br /> Analytical 917 Stnktr Avenue Suite 9 Sacramento Cl. '))834 d)161 '921 9600 <br /> FAti '�1� 921 0100 <br /> Delta Environmental Consults Client Pro] ID Exxon 7 370B D093-809 Sampled t13/3u/y8 <br /> 3164 Gold Camp Drive #200 Sample Descript MW-5 Received 03/30/98 <br /> Rancho Cordova CA 95670 Matrix LIQUID 05 98 <br /> 04 <br /> Analysis Method EPA 8250 Analyzed 04/09/98 <br /> Attention Jim Brownell Lab Number 9803L29-05Reported <br /> QC Batch Number MS040598MTBEH6A <br /> Instrument 1D H5 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> N © <br /> Ethanol 500 N D <br /> t-Butanol 20 20 <br /> Methyl t-13utyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether (DIPS) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amyl Methyl Ether (TAME) <br /> Control Limits % % Recovery <br /> Surrogates 76 114 88 <br /> 1 2-Dichloroethane-dA <br /> 0 <br /> Anaiytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> P�— — <br /> r gory Page 9 <br /> Project Manager <br />