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' ntech Analytical Labs, Inc 525 Del Rey Avenue, Suite E <br /> Sunnyvale, CA 94086 <br />' QUALITY CONTROL RESULTS SUMMARY <br /> METHOD Gas Chromatography <br />' QC Batch# GBG4971013 Date Analyzed 10/13/97 <br /> Matrix <br /> Soil <br /> Units ug/kg Quality Control Sample D16025 <br /> Units <br /> r <br /> PARAMETER Method# MB I SA ! : QC LIMIT'S <br /> € 9 SR SP SP I SPD SPD RPD f (ADVISORY) <br /> I ` u gug/kg i ug/kg I ug/kg s %R uSlkg [ %R i RPD r %R <br /> ' <br /> ,'Benzene E 8020 <5 0 i 80 ND'! 78 98 $1 101 F 3 2 i 25 50-150 <br /> :Toluene t 8020 i <5 0 t 80 r ND I g0 t 100 r 82 r I03 r 2 8 r 25 r 50-150 : <br /> Ethyl Benzene j 8024 <5 0 80 i ND 1 79 98 i 80 j 100 i 1 5 j 25 50-150 <br /> Xylenes i 8020 <50 240 ND 243 101 1 241 100 11 25 i 5D-150 <br /> Gasoluae r 8015 r C 1000 00 I 1000 I ND 800 80 1 820 82 25 25 I 50-150 <br /> Note LCS and LC&D results reported for rhe following Parameters <br /> None <br /> Acceptable LCS and LCSD results are reported when matrrx uuerferences cause MS and MSD resuks to fall outrule <br /> ' established QC limuts <br /> �finitxon of Terms <br /> na Not Analyzed in QC batch <br /> MB Method Blank <br /> SA Spike Added <br /> ' SR Sample Result <br /> RPD(%) Duplicate Analysts-Relative Percent Difference <br /> SP Spike Result <br /> SP (%R) Spike % Recovery <br /> ' SPD Spice Duplicate Result <br /> SPD (%R) Spike % Recovery <br /> NC Not Calculated <br /> 1 <br />