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iSequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Crcek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> „1 Analytical 819 Straker Avenue Suite 8 Sacramento CA 95834 (916) 921 96W FAX (916)921-0100 <br /> U= <br /> EA Engineering Science&Tech ryClient Prol ID —3=saon 7-0137, 6150137 1300 Sampled 07/21/97 <br /> " 3458 Mt Diablo Blvd Ste B100 Sample Descnpt MW5 Received 07/23/97 <br /> Lafayette, CA 94549 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 08/04/97 _ <br /> Attention Chnsta_Marting_ __ Lab Number 9707B97-08 _ Reported 08/04/97 _ <br /> Irsirument ID H6 ==_ <br /> Methyl t-Butyl Ether (MTBE) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Methyl t-Butyl Ether 20 72 <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 99 <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> 1EQUOIA ANALYTICAL - ELAP #1210 <br /> n Follett <br /> ect Manager page 9 <br />