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r � <br /> Entech Analytical Labs,Inc. 525 Dei Rey Avenue,Suite E <br /> Sunnyvale, CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br /> QC Batch# GBG2980514 Date Analyzed- 05/14/98 <br /> Matrix Water Quality Control Sample- E9350 <br /> Units u <br /> PARAMETER Method# MB SA SR SP SP SPD SPDRPD QC LIMITS <br /> u u u u %R u %R F %R <br /> (Benzene 1 8020 1 <0 50 1 40 1 ND 1 37 1 92 1 37 1 94 1 19 1 25 1 75-112 1 <br /> :Toluene : 8020 <0 50 : 40 i ND 37 : 93 38 94I 1 4 I 25 1 77-111 i <br /> I I I i <br /> :Ethyl Benzene : 8020 I <0 50 : 40 I ND : 38 : 94 1 38 I 95 : 0 9 : 25 : 76-112 I <br /> I i 1 E I i I ! I I I I [ <br /> ,:Xylenes 1 8020 1 <0 50 I 120 I ND I 114 ! 95 I 115 I 96 1 0 8 1 25 1 78-112 1 <br /> ,Gasoline , , 1 I I 83 , 3 6 I I I <br /> 1 8015 1 <50 0 l 1000 I ND I 860 I 86 I 830 I I 1 25 I 57-129 I <br /> Note LCS and LCSD results reported for the following Parameters <br /> None <br /> Acceptahle LCS and LCSD results are reported when matrix interferences cause,SIS and MSD results to fall outside <br /> established QC limits <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 />