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' Entech Analytical Labs,Inc. 525 Del Rey Avenue,Suite E <br /> • Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br /> ' Batch# GBG2980929 Date Analyzed 09/29/98 <br /> Matrix Water Quality Control Sample E17183 <br /> ' Units u <br /> EEARAMETER Method# M13 SA SR SP SP SPD SPD RPD QC LIMITS <br /> ugIL ugAL u %R u o/uR RPD I %R <br /> iBenzene i 8420 i <0 50 j 40 i ND i 39 1 97 i 36 1 90 i 8 1 1 25 78-112 <br /> i <br /> Toluene i 8020 i <0 50 i 40 ND i 38 11 96 i 35 i 88 i 8 8 25 i 79-111 E <br /> 1 I <br /> Ethyl Benzene i 8020 11 <0 50 i 40 i ND 39 97 i 34 i 85 132 i 25 79-114 i <br /> iXylenes 1 8020 i <0 50 120 ND i 118 i 98 i 101 1 84 i 160 i 25 i 79-115 i <br /> Gasoline <br /> 8015 i <50 0 i 1000 i ND 1090 t 109 i 1050 105 , 37 25 i 64-125 <br /> ' Note LCS and LCSD results reported for the following Parameters <br /> Gasoline <br /> 1 <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 m 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 />