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1 <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 /> ' <br /> QC Batch# GBG2980928 Date Analyzed 09/28/98 <br /> Matrix Water Quality Control Sample E17304 <br /> ' Units u <br /> ESPDARAMETER Method# MB SA SR SP SP SPD <br /> RPD QC LIMITS <br /> u8j 2y& u %R u %R RPD %R <br /> iBenzene 1 8020 i <0 50 1 40 i NO 1 39 1 96 1 39 i 98 1 18 i 25 i 78-112 i <br /> :Toluene 8020 } <0 50 : 40 ND 39 : 97 39 i 98 : 12 i 25 : 79-111 : <br /> 1 :Ethyl Benzene 8020 <0 50 ; 40 i ND 39 98 40 100 2 0 i 25 79-114 <br /> iXylenes 1 8020 i <0 50 i 120 i ND 121 i 101 = 123 i 103 i 2 0 25 i 79-115 <br /> :Gasoline 8015 i <50 0 i 1000 i ND i 960 96 : 1020 102 i 61 i 25 i 64-125 <br /> 1 Note LCS and LCSD results reported for the following Parameters <br /> Gasoline <br /> Acceptable LCS and LCSD results are reported when matrix interferences cause MS 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 /> 1 <br /> 1 <br /> i} <br /> 1 <br />