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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 -Volatile Organics <br /> QC Batch# VOC960920 Date Analyzed 09/20/96 <br />' Matrix Water/Soil <br /> Uruts <br /> QC LIMITS <br /> PARAMETER Method# : SA SR SP SP SPD SPD RPD (ADVISORY) <br /> VgJL' % R ' %R RPD %R <br /> 1191ai 99/L <br /> i Benzene 1 6011602 1 401 ND 1 40 21 101 39 6i 99 2 0; 25 1 50-150 1 <br />' ',Toluene 1 6011602 401 ND1 41 3, 1031 42 91 1071 4 01 25 ' 50-150 <br /> 1Chlorobenzene 1 6011602 1 401 ND1 43 81 1101 4051 1011 901 25 1 50-150 i <br /> 11,1-Dichloroethane 1 6011602 1 401 ND, 40 61 1021 39 71 991 3 01 25 1 50-150 <br />' 1Tnchloroethene 1 6011602 ' 401 ND It 4191 1051 3811 951 1001 25 ' 50-150 1 <br /> i i 1 1 1 1 i i i 1 1 1 <br /> Definition of Terms <br /> na Not Analyzed in QC batch <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 Duplicate%Recovery <br /> ---------- <br /> QA/QC Officer <br /> M Golden <br /> I <br />