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tech Analytical Labs,Inc. 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> ' QUALITY CONTROL RESULTS SUMMARY <br /> METHOD:Gas Chromatography <br /> Laboratory Control Sample <br /> ' QC Batch#: WGC4000329 Date Analyzed: 03/29/00 <br /> Matrix: Liquid Quality Control Sample: Blank Spike <br /> ' Units: µg/Liter <br /> PARAMETER Method# MB SA SR SP SP SPD SPD % I QC LIMITS <br /> µg/Liter µg/Liter ug/Liter; µg/Liter %R µg/Liter %IY RPD '; RPD %R <br /> ;Benzene ; 8020 ; <0.50 4.7 ; ND ; 5.2 ; 111 ; 4.8 ; 102 ; 8.8 ; 25 ; 70-130 ; <br /> ;Toluene ; 8020 ; <0.50 ; 29 ; ND 29 ; I00 ; 30 ; 103 ; 3.3 ; 25 ; 70-130 ; <br /> ;Ethyl Benzene ; 8020 ; <0.50 ; 5.5 ; ND ; 5.5 ; 100 ; 5.7 ; 104 4.2 25 70-130 <br /> Xylenes 1 8020 1 <0.50 1 32 ND t 32 101 1 33 1 104 1 2.7 25 .1 70-130 <br /> ;Gasoline 8015 <50.0 467 f ND 458 98 461 99 0.7 25 70-130 <br /> ;aaa-TFT(S.S.)-FID 8020 111% 105% 112% 65-135 <br /> ;aaa-TFT(S.S.)-PID 8015 ; 99% 98% 101% 65-135 <br /> Definition of Terms: <br /> • na: Not Analyzed in 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 /> 1 <br /> 1 <br /> • <br /> i <br /> 1 <br />