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�Entech Analytical Labs,Inc. <br /> 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> L Laboratory Control.Sample <br /> QC Batch#: WMS991223 Date analyzed: 12/23/99 <br /> Matrix: Liquid Spiked Sample: Blank Spike <br /> Units: lig/L <br /> PARAMETER Method# SA 1 SR SP SP SPD JSPD RPD QC LIMITS <br /> Itg/L Pg/L lAg/L %R lig/L %R RPD i %R <br /> ;1,]-Dichloroethene " 8240/8260 40 1 ND 40.0 1�:: 100 40.0 1 100 0.0 25 1-50-150' <br /> ;Methyl-tert=butyl ether $24018260 ; 40 ND 39.0 ; 98 43.0 108 ; 9.8 25 1 50-150 <br /> 31 <br /> t ;Benzene 8240/8260 40 ND 39.0 98 '41.0 103 5.0 25 1 50-150 ' <br /> 1 -1 ! ! 1 1 I r l 1 , ; <br /> Trichloroethene 1 '8240/8260 ' 40 1 ND 1 40.0 100 43.0 108 7.2 25 1 50-150 ; <br /> tTofuene 8240/8260 1 40 ND 39.0 :�. 98 i 40.0' 100 1 2,5 25 50-150 <br /> �Chlorobenzene 8240/8260 40 `� ND .� 40,0 100 F 42.0 1 105 1 4.9 1 25• 1 50-150 1 <br /> !Surrogates 1 1 1 1 1 1 1 ! 1 <br /> Dibromofluoromethane 1 8240/8260 1 104% 1 93%' ; 100% ; 65-135 <br /> 1 1 1 -1 <br /> t ;QBE d3 1 -.8240/8260 1 1 114% 1 98% ; - 1 105% ; 1 1 1 65-135 1 <br /> # ,'Toluene-d8 1 8240/8260 1 95% 1 95% i 95%. i i ; i 65-135 <br /> 14-Bromofluorobenzene .8240/8260 1 1 95% 1 95% 1 1 98% ! 11 <br /> 65-135 I <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> SA: Spike Added <br /> SR: Sample Result <br /> L' 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 /> Ey. <br />