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t <br /> �Entech Analytical Labs, Inc 525 Del Rey Avenue,Suite E <br /> Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br /> QC Batch# GBG4980827 Date Analyzed 08/27/98 <br /> Matrix Water Quality Control Sample Blank Spike <br /> Units u <br /> r <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> u u u u % R u %R RPD 1 %R <br /> (Benzene 1 8020 1 <0 50 1 80 1 ND 1 89 1 111 1 85 1 106 1 52 1 25 1 76-116 1 <br /> :Toluene : 8020 : <0 50 : 80 1 ND 1 88 : 110 : 86 : 107 : 29 : 25 : 75-116 : <br /> I 1 I 1 I I i { 1 ! ! I ! <br /> :Ethyl Benzene 1 8020 1 <0 50 1 80 I ND 1 88 i 110 1 86 1 108 1 27 i 25 I 77-116 I <br /> 1 f I I I I 1 1 1 I 1 I i <br /> :Xylenes I 8020 1 <0 50 1 240 1 ND 1 275 I 115 1 270 1 113 1 19 1 25 1 76-119 <br /> N98 30 1 <br /> (Gasoline : 8015 : <50 0 1 1000 1 D i 980 1 : 10 : 103 : 5 0 -136 1 25 : 63 : <br /> 1 I I I t i 1 1 I ] 1 ! <br /> Note LCS and LCSD results reported for the following Parameters <br /> All <br /> Acceptable LCS and LCSD results are reported when matnx interferences cause VS and MSD results to fall outside <br /> .established QC limits <br /> Defmtion 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 />