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1 <br />' l Anatical Labs <br /> *Entech y ,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 />' QC Batch# SGCMS990827 Date analyzed 0$127/99 <br /> Matrix Soil Spiked Sample Blank Spike <br /> Units pg/kg <br />' PARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> pg/kg [tg/kg Fig/kg %R Fi g %R RPD <br /> F]-D,chloroethene ; 8240/8260 25 ND ; 21 84 1- 26 ; 104 1 217 ; 25 ; 70-130 <br /> 1 ! 1 1 1 1 1 1 1 , <br />' Benzene $240/8260 25 ND 23 93 I 25 I 102 91 1 25 70-130 1 <br /> 1 <br /> iTn1chloroethene 8240/8260 ; 25 ; ND ; 25 ; 102 ; 28 ; 112 ; 9 4 25 ; 70-130 ; <br /> ` <br /> Toluene 8240/$260 , 25 / ND , 23 1 93 , 25 , 101 8 2 25 1 70-130, <br /> �Chlarobenzene 1 8240/8260 1 25 1 ND I 24 1 1 94 1 26 i 103 1 <br /> 8 9 11 25 70-130 3' <br /> (+ <br /> �.l tll70g(ifES <br /> ;Dibromofluoromethane ; 8240/8260 ; 79% ; 89% ; 96% i 65-135 ; <br />' MTBE-6 8240/8260 l 84% 88% 102% 65-135 <br /> 1 , , 1 F 1 I , 1 1 , <br /> !Toluene A8 8240/8260 0 98% l 96% l 95% 65-135 <br /> 4-Bromofluorobenzene l $24018260 l 90% 1 97% 1 i 98% l l l ' <br /> 65-135 ; <br /> lie <br /> I <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 /> NC Not Calculated <br /> I <br /> I <br /> r <br />