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Entech Analytical Labs,Inc 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUM31ARY <br /> METHOD Gas Chromatography <br /> QC Batch# GBG5970626 Date Analyzed 06/26/97 <br /> Matrix Water Quality Control Sample Blank Spike <br /> Units lrg/L <br /> QC LMTS <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD (ADVISORY) <br /> Rg/L Fid- Fr$2 Isg/L %R pg/L %R RPD r %R <br /> rBenzene r 8020 e <0 5 25 ND r 33 6 ! 134 r 288 r 115 r 153 ! 25 I 50-150 ! <br /> (Toluene i 8020 <0 5 25 j ND j 23 9 i 96 j 248 99 i 38 j 25 i 50-150 � <br /> Ethyl Benzene ' 8020 r <0 5 r 25 ' ND ' 23 9 ' 96 ' 231 ! 92 r 34 ' 25 r 50-150 ' <br /> Xylenes r 8020 ! <0 5 r 75 r ND r 68 r 91 r 68 91 00 r 25 r 50-150 r <br /> Gasoline it 8015 <50 0 625 i ND i 672 i 108 i 593 95 j 125 25 i 50-150 F <br /> . Definition of Terms <br /> na Not Analyzed in QC batch <br /> MB Method Blank <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%Recovery <br /> NC Not Calculated <br />' � I <br /> I <br /> I I I <br /> I <br /> 1 1 I <br /> I , ` E II <br /> id <br />