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hl r) 7 tech Analytical 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# WGC]000705 Date Analyzed 07/05/00 <br /> Units gg/LLiquid Quality Control Sample Blank Spike <br /> Units 1sg/Liter <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> gg/Liter µg/Ljter pg/Liter gg/Liter % R µg/Liter %R RPD 1 %R <br /> :Benzene 8020 <0 50 45 l ND 49 — <br /> 1 107 I 4$ 105 1 8 25 73-125 <br /> !Toluene 8020 <0 50 270 ; ND <br /> 32 118 1 32 119 1 03 25 84-112 <br /> Ethyl Benzene 8020 <0 50 55 ND 65 117 1 65 1 118 10 5 1 25 77-115 <br /> Xylenes 8020 <0 50 1 33 0 i 1 ' <br /> ND 37 111 37 1 111 1 06 125 1 ' <br /> lana TFi SS a 7-121 <br /> 80?5 <50 0 471 ND 558 11 118 ; 560 119 0 3 25 74-122 <br /> �( )- ID i 80_0 102% 98% 98% 65-135 <br /> ;aaa-TFT(SS)-FID 8015 i 102% 102% 101% <br /> 65-135 <br /> Definition of Terms <br /> na Not knalyzed 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 />