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Entech AnalyticalInc. 525 Del Re <br /> . altl LbIY Ave. Suite E <br /> Sunnyvale, CA 94086 <br /> QUALI'T'Y CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> QC Batch# 8240W981109 Date analyzed 11/09/98 <br /> Matrix Water Spiked Sample Blank Spike <br /> Units <br /> ARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> jig/L jig/l, %R %R RPD 1 %R <br /> 11,1-Dichloroethene 18240/8260 t 25 1 ND 1 23 1 91% 1 22 1 86% 1 50 1 25 1 50-150 t <br /> I 1 t I t 1 1 1 I 1 I I 1 <br /> IMethyl-tart-butyl ether 1 $240/82601 25 I ND 1 29 11 14% 1 28 1 114% I 07 1 25 t 50-150 1 <br /> :Benzene 1182401826011 1 i 1 1 I I 25 I ND 1 25 1 98% 1 24 1 95% 1 33 1I I <br /> 25 : 50-150 1 <br /> I1 <br /> ITnchloroethene 18240/8260 1 25 1 ND 1 26 1 102% 1 27 1 108% 1 50 1 25 1 50-150 1 <br />' I ! I 1 ! 1 1 I I 1 <br /> ITo3uene 1 8240/82601t r 25 1 ND 1 28 1 113% 1 29 : 116% 1 21 1 25 1 50-150 1 <br /> :Chlorobenzene 118240/8260,1 25 : ND : 25 11 100% 11 1 25 ! 100% : 00 : 25 : 50-150 1 <br /> II i 1 I I I <br /> 11,2,4-Trtchlorobenzene 18240/82601 25 1 ND 1 26 1 104% 1 26 1 102% 1 12 1 25 1 50-150 t <br /> l I I I 1 1 11 i 1 I 1 I <br /> it <br /> I <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA: Spike Added <br /> SR. Sample Result <br /> RPD(%) Duplicate Analysis-Relative Percent Difference <br /> SP Spike Result <br /> SP(%R) Spike%Recovery <br /> SPD. Spike Duplicate Result <br /> SPD(%R) Spike Duplicate%Recovery <br />' NC. Not Calculated <br /> I <br /> i <br /> I <br />