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r <br /> ' Entech Analytical Labs,Inc. 525 Del Rey Avenue,Suit <br /> • Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD: Gas Chromatography <br /> QC Batch##: GBG2990610 Date Analyzed: 06/10/99 <br /> Matrix: Water Quality Control Sample: Blank Spike <br /> Units: µg/L <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> Ng/L 491L µ9/1- I192 % R µglL %R RPD' %R <br /> ;Benzene 8020 <0.50 5.0 ND 1 4.8 96 4.3 87 9.6 25 74-116 <br /> Toluene 8020 <0.50 25.0 ND 29 116 27 108 6.7 25 79-120 <br /> r <br /> ;Ethyl Benzene ; 8020 <0.50 5.0 IND ; 5.7 ; 114 I 5.3 ; 105 ; 7.7 25 ; 77-114 ; <br /> I'Venes 8020 <0.50 25.0 ND 30 119 28 1 112 1 6.6 ; 25 ; 80-I24 <br /> f <br /> ;Gasoline ; 8015 <50.0 500 ND 512 102 479 96 6.6 ; 25 ; 75-I25 <br /> ' :aaa-TFT(S.S.)-PID 8020 101% 100% 100% 65-135 <br /> ;aaa-TFT(S.S.)-FID ; 8015 104% 102% 102% 65-135 <br /> ' Note: LCS and LCSD results reported for the following Parameters: <br /> All <br /> 1 • <br /> r <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> MB: Method Blank <br /> SA: Spike Added <br /> r 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 /> 1 <br /> r <br /> 1 <br /> 1 <br />