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Entech Analytical Labs, Inc. 525 Del Rey Avenue,Suite E <br /> is Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY - <br /> METHOD.Gas Chromatography <br /> QC Batch# GBG4981005 Date Analyzed. 10/05/98 <br /> Matrix Water Quality Control Sample Blank Spike <br /> Units u <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD TQC LIMITS�T <br /> u u —ug4,-- %R u %R RPD r %R <br /> iBenzene i 8020 r <0 50 1 80 1 ND r 79 r 98 r 76 r 95 r 29 1rr8020 r <0 50r 80r i r ir 25 ir <br /> 77-115 <br /> rToluene - r <br /> 76 r 95 r 3 6 r 25 r 75-115 <br /> 'Ethyl Benzene i 8020 i <0 50 80 ND 11 78 E 98 76 i 95 i 26 25 i 77-115 <br /> 1Xylenes r 8020 r <0 50 r 240 r ND r 236 i 98 r 232 r 97 r 1 9 r 25 i 76-118 a <br /> jGasoline r r r r <br /> r 8015 r <50 0 r 1000 i ND r 1010 r 10.1 r 1010 i 101 r 00 i 25 r 65-135 r <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 /> &tabltshed QC limits <br /> Definition of Terms <br /> na Not Analyzed to 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 />