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Y L <br /> 1 <br /> Y <br /> Entech Analytical Labs, Inc 525 Del Rey Ave, Suite E <br /> . Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUN" ARY <br /> Volatile Organic Compounds <br /> QC Batch# 8240W980828 Date analyzed 08/28/98 <br /> Matrix Water Spiked Sample EI5376 <br /> Units <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD QC L1341TS <br /> %R %R RPD I %R <br /> 11,1-Dichloroethene t 624 1 25 1 ND 1 31 1 122% 1 31 1 123% 1 07 1 25 r 50-150 1 <br /> ({MethYl- lY tert-bu l ether t 624 1 25 I ND i 21 1 82% 1 21 I 85% 1 29 r 25 I 50-150 1 <br /> ! 1 I I I 1 I 1 I l 1 <br /> 1 <br /> :Benzene : 624 1 25 : ND 1 22 : 87% : 22 : 88% : 09 : 25 : 50-150 1 <br /> ! I I l I I 1 I I ! l <br /> ITrichloroethene 1 624 1 25 1 ND 1 23 ! 90% t 23 i 93% t 26 1 25 I 50-150 t <br /> ,Toluene E 624 i 25 ND i 21 { 85% j 21 i 84% i 19 25 50-150 <br /> :Chlorobenzene : 624 : 25 I ND : 21 I 85% I 22 : 88% : 28 1 25 : 50-150 : <br /> ! I I l I r 1 ! 1 I I I <br /> I I i t <br /> • <br /> Definition of Term <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 />