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Entech Analytical Labs,Inc 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 44086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br /> Laboratory Control Sample <br /> QC Batch# WGCIB000119 Date Analyzed 41/19/00 <br /> Matnx Liquid Quality Control Sample Blank Spike <br /> Units µg/Liter <br /> PARAMETER Method# MB SA SR SP SP SPD SPO RPD QC LIMITS <br /> 4g/Liter ug/Liter 4g/Liter 1ug/Liter % R 4g/Liter %R RPD 1 %R <br /> Benzene 8020 1 <0 50 1 52 ; ND 47 91 ; 47 1 91 ; 04 1 25 73-125 ] <br /> , 1 , ] , 1 f <br /> Toluene 8020 <0 50 1 290 ND 28 y 97 28 1 97 1 01 1 25 1 84-112 ; <br /> ,Ethyl Benzene 1 8020 <0 50 1 57 1 ND 1 5 6 1 98 1 5 5 1 97 07 1 25 77-115 1 <br /> ;Xylenes 8020 <0 50 ; 306 ND 31 103 31 1 103 1 03 25 87-121 ; <br /> ;Gasoline ; 8015 <50 0 ; 500 ; ND ; 520 ; 104 518 ; 104 ; 06 25 ; 74-122 ; <br /> �aaa-TFT(SS)-PID 8020 108% 104% 103% 65-135 <br /> 1 aaa-TFT(S S)-FID 8015 114% 107% 106% 65-135 <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> MB Method Blank <br /> 0 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 />