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' Entech Analytical Labs,Inc 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 940$5 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> I Volatile Organic Compounds <br /> Laboratory Control Sample <br /> QC Batch# SGCMS990828 Date analyzed 08/28/99 <br /> Matrix Soil Spiked Sample Blank Spike <br /> Units µ8/k8 <br />' PARAMETER Method# SA SR SP SP SPD SPD RPD QC LMTS <br /> µg/kg ug/k8 pg/kg %R lila/k$ %R RPD <br /> l,l-Dichloroethene ; 8240/8260 25 ; ND ; 22 ; 88 ; 20 82 75 ; 2.5 ; 70-130 <br /> t <br /> 'Benzene 8240/8260 r t t <br />' ' 25 ND = 23 94 + 23 92 17 + 25 r 70-130 <br /> i <br /> ,Tnchloroethene 8240/8260 ; 25 ND ; 24 97 28 112 ; 13 8 ; 25 70-130 ; <br /> ;Toluene ; 8240/8260 1 25 ; ND ; 24 ; 97 ; 23 ; 93 ; 4 6 ; 25 ; 70-130 <br /> ' ' 98 12 25 1 70-130 <br /> ,Chlorobenzene $2401$260 25 + ND t 25 100 + 25 t <br /> ; <br /> 'Surrogates sumo aYPs <br /> g <br /> ;Dibromofluoromethane p 8240!8260 103% ; 96% 83% 65-135 <br />' ;MTBE-d3 8240/8260 ; 105% ; 107% ; ; 87% ; ; 65-135 <br /> Toluene-d865-135 99% ; 100% ; 94% 65-135 I <br /> 14-Bromofluorobenzene F 8240/8260 1 1 94% 104% 1 F 101% I 65-135 <br /> lie <br /> IDefinition 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 /> NC Not Calculated <br /> I <br /> I <br />