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} r, <br /> •Entech Analytical Labs, Ine. 525 Dei 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 Soil Quality Control Sample Blank Spike <br /> Units ug/kg <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> u u u u %R u %R RPD i %R <br /> iBenzene i 8020 i <5 0 t 80 1 ND i 89 i 111 i 85 1 106 i 52 i 25 i 76-117 i <br /> :Toluene : 8020 : <5 0 : 80 : ND : 88 i 110 : 86 107 : 2 8 ', 25 i 76-117 i <br /> i i i i i i i i r i i + i <br /> :Ethyl Benzene 8020 ir <5 0 80 ND r 88 110 i 86 108 27 i i 25 ii 74-119 i <br /> r i r i i :i i <br /> :Xylenes i 8020 1 <5 0 i 240 t ND i 275 i 115 i 270 i 113 i 1 9 1 25 1 75-120 i <br /> Gasoline i 8015i:: <1000 00 1000 : ND i 980 : : <br /> i � i 98 i 1030 r 103 i 50 i 25 i 58-120 i <br /> Note LCS and LCSD results reported for the following Parameters <br /> All <br /> Acceptable LCS and LCSD results are reported when matrix interferences cause MS and MSD results to fall outside <br /> W,tablished 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 /> • <br />