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Ii+ ! 3 <br /> vtech Analytical Labs, (ac- <br /> 525 lief Rey Avenue,Suite E <br /> Sunnyvale,Cik 94086 <br /> QUALITY CONTR61,RESULTS Si MtV1 ARY <br /> METITOD: Gas Chromatography <br /> Laboratory,Control Sample <br /> QC Batch A. GBG1991104 <br /> 3. Date Analyzed: i 1r04i99 <br /> Matrix: LiquidQuality Cunttu3 Sample: Black Spike <br /> Units: u_VLiter <br /> I <br /> PARAMETER Method# MB I SA SR "5k' SP SPA SPA= RPD, QC LIMITS <br /> pgfuter µgVutcr = 1491 t:r; 419i1,iter i % R I ?-g,,Lit, r! %R + RPD %R <br /> .Bettzene I 8020 <0.50 t 6.6 t ND 6:9 105 6.4 t 97` s 7.2 25 77-129 <br /> IToluene 1 8020 t <0.50 29.0 1 ND 1 .29 1 100 1 27 I 93: , 6,8 [ ..25 82-122 <br /> 'Ethyl Benzene ' 3020 <0.50 1 ' 5-7 ! ND ' S:6 . ' 98 5-2 91 1 7.6 277-114 <br /> �X lenes ' 3020 1 <0.50 2 ' 2 <br /> y 1 30.6 I ND 1 �. 1 105 1 30 97` 7.9 S SS-€-5 <br /> !Gasoline t 8015 <50.0 Su0 ND is 439 1 88 438 = 88. 0.3 25 75-125 <br /> lana-TFT(S.S)PID 8020 ' €' 96%� �' 99%1 98%. { <br /> 65•I35 <br /> laaa-7FT(S,S.)-F1D 1 8015 ' ! 86%! ii 86%€ 92%. 657135 <br /> 1 <br /> ..Definition of Terms: <br /> na: Not Analyzed in QC batch j <br /> MB: Method 131ank <br /> SA: Spike Added ' <br /> SR Sample Result <br /> RPD(%): Duplicate Analysis-Relative Percent.Difference .� <br /> SP: Spike Result <br /> SP(%R): Spike 90 Recovery <br /> SPD- Spike,Duplicate Result <br /> SPD(%R): Spike%Recovery '' <br /> ' Ir <br /> nc: Not Calcula[ed r ;' <br /> . _ l <br /> J <br />