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Entech Analytical Labs,Inc. 525 Del Rey Ave., Suite E <br /> 4 Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> QC Batch#: WGCMS990301 Date analyzed: 03/01/99 <br /> j Matrix: Water Spiked Sample: Blank Spike <br /> Units: ug/L <br /> .�� PARAMETER Method# : SA SR SP SP SPD SPD RPD QC LIMITS <br /> µg/L µ91L 99/L %R pg/L %R RPD 1 %R <br /> 11,1-Dichloroethene E 824018260E 25 I ND E 25 101 i 25 i 100 1.2 25 E 50-150 <br /> 1 1 E E 1 E E E 1 E 1 <br /> i� 'Methyl-tert-butyl ether 1 8240/82601 E 25 1 ND ' 26 ' 102 1 25 1 100 ' 2.0 ' 25 1 50-150 1 <br /> EBenzene 1 8240/8260 E 25 E ND 1 27 1 108 1 27 1 106 1 1.1 1 25 1 50-150 E <br /> 1Trichloroethene 18240/82601 25 1 ND 1 26 1 106 E 26 E 104 1 Ll E 25 1 50-150 1 <br /> 'Toluene 18240/82601 25 1 ND ' 27 ' 108 1 27 1 106 ' 1.5 ' 25 1 50-150 ' <br /> 1Chlorobenzene E 8240/82601 25 1 ND 1 28 1 110 1 27 E 110 1 0.7 1 25 1 50-150 1 <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> SA: Spike Added <br /> SR: Sample Result <br /> RPD(%): Duplicate Analysis-ReIative Percent Difference <br /> ' SP Spike Result <br /> r SP(%R) Spike%Recovery <br /> SPD: Spike Duplicate Result <br /> SPD(%R) Spike Duplicate%Recovery <br /> NC: Not Calculated <br /> ;�r <br />