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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# VOCW970213 Date Analyzed 02/13/97 <br /> Matrix Water Quality Control Sample D3089 <br /> Units <br /> QC LIMITS <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD I (ADVISORY) <br /> L I p gfL I 8FZL I %'R µ %R RPD I %R <br /> I Benzene 1 602 1 401 NDI 40 01 1001 40 41 1011 01 25 k 50-150 1 <br /> I oro <br /> 1Chlbenzene 1 601 1 401I ND, !I 44 21 11111 I 43 21 1081I I 2 31 25 1 50-150 1 <br /> I 1 1 ! <br /> 11,1-Dichloroethane It 601 1l 401I NDI1 38 11! 9511 3751, 941l 1 61 f 25 1 50-150 I <br /> I I I <br /> ITolulene 1 602 k 401 ND! 40 01 1001 40 51 1011 121 25 1 50-150 1 <br /> 1 1 I 1 I I i I I I I <br /> :Trichloroethene : 601 ! 401 NDI 43 41 1091 45 71 1141! 5 2: 25 : 50-150 <br /> I 1 I t I 1 I I 1 I 1 I <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 /> NC Not Calculated <br />