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ai } <br /> Entech Analytical Labs,Inc 525 Del Rey Avenue,Suite E <br /> . Sunnyvale,CA 94086 <br /> QUAL-TTY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br /> Laboratory Control Sample <br /> QC Batch# WG13G2000407 Date Analyzed 04/07/00 <br /> Matrix Water Quality Control Sample Blank Spike <br /> Units µg/Liter <br /> PARAMETER Method# MB SA SR SP SP SPD SPD RPD QC LIMITS <br /> µg/Liter µg/Liter µg/Liter µg/Liter %R µg/Liter %R RPD %R <br /> Benzene I8020 I <0 50 f 4 3 t ND 1 4 2 l 97 1 42 198 1 2 25 67-115 <br /> 1 1 ' ' <br /> 8020 1 <0 50 1 28 0 1 <br /> 1 ND 1 29 1 105 1 25 1 89 1 158 1 25 1 82-122 <br /> Toluene <br /> ;Ethyl Benzene 8020 1 <0 50 1 56 ND 1 5 9 105 1 5 1 1 91 142 25 1 77-114 <br /> ;Xylenes 1 8020 1 <0 50 ; 31 3 ND 33 106 29 1 91 15 0 25 85-125 <br /> !Gasoline 8015 <50 0 484 ND 536 1 111 456 1 94 ; 160 25 74-122 <br /> :aaa-TFT(SS)-PID 1 8020 104% 99% 99% 65-135 <br /> 14aa-7'FT(SS)-FID 1 8015 115% 110% 108% 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 />• <br />