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'1 <br /> Jentech Analytical Labs,Inc. 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> � QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> Laboratory Control Sample <br /> I <br /> QC Batch#: WMS991216 Date analyzed: 12/16/99 Matrix: Liquid Spiked Sample: Blank Spike <br /> Units: 1Lgfl, <br /> PARAMETER Method# SA SR i SP SP SPD i SPD RPD i QC LIMITS <br /> ]'g/L 's µgfL µ91L € %R µg/L _ %R RFD %R <br /> I I ND 39.2 98 43.0 108 <br /> l,l-Dichloroethene $24018260 ; 40 9.2 25 50-150, <br /> ;Methyl-cert-butyl ether ; 8240/8260 ; 40 ND 39.6 99 ; 39.0 98 1.5 25 50-150 l <br /> ' Benzene 8240/8260 1 40 ; ND 38.5 96 1 41.7 104 1 8.0 25 50-150 <br /> ;Trichloroethene ; 8240/8260 ; 40 ; ND 38.4 ; 96 42.4 ; 106 ; 9.9 25 ; 50-150 <br /> ;Toluene 8240/8260 40 ND 40.8 102 41.7 104 2.2 1 25 50-150 ' <br /> ' ;Chlorobenzene 8240/8260 1 40 ND 1 42.3 1. 106 42.9 107 1.4 25 50-150 <br /> ;Surrogates l 1 <br /> IDibromolluoromethane 8240/8260 1 87% 99% i 1 96% 1 65-135 I <br /> ;MTBE-d3 ; 8240/8260 1 87% 102% ; 1 100% ; ; 65-135 <br /> iToiuem-d8 8240/8260 92% 96% 96% 1 l 65-135 <br /> ;4-Bromofluorobenzene 1 8240/8260 1 ; 92% ; 92% ; 97% ; 65-135 <br /> l <br /> definition of Terms: <br /> na: Not Analyzed in QC batch <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 Duplicate%Recovery <br /> 1 <br /> I� <br /> r� <br />