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Entech Analytical Labs, Inc 525 Del Rey Ave, Suite E <br /> Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> QC Batch 9 8240W980827 Date analyzed 08/27/98 <br /> Matrix Water Spiked Sample Blank Spike <br /> Units <br /> ARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> µ µ %R %R RPD 1 %R <br /> 11,1-Dichloroethene 1 624 1 25 1 ND 1 32 1 127% 1 31 1 122% 42 1 25 1 50-150 1 <br /> Methyl-tent-butyl ether j 624 25 ND 31 123% j 31 125% 13 25 j 50-150 <br /> 'Benzene ' 624 ' 25 ' ND ' 27 1 109% t 28 1 111% ' 1 8 ' 25 ' S0-150 ' <br /> 1 t 1 I ! ! ! t I t ! <br /> 1Tnchloroethene 1 624 1 25 l ND 1 28 1 110% 1 29 1 114% 1 32 1 25 r 50-150 1 <br /> j j 624 1 25 1 ND 1 27 1 108% E 27 108% 0 7 ! 1 <br /> Toluene i 1 i � � i � t 25 ! 50-150 1 <br /> 'Chlorobenzene ' 624 ' 25 ' ND ' 26 ' 104% ' 26 ' 105% ' 0 8 ' 25 ' 50-150 ' <br /> ! <br /> 11,2,Tnchlorobenzene 1 624 25 1 ND 27 107% 27 1 110% 1 26 1 25 1 50-150 1 <br /> f I I 1 I I I I I I I I <br /> 1 I I I I ! I 1 1 1 I I <br /> • <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 />