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Entech Analytical Labs,Inc. 525 Del Rey Avenue,Suite <br /> _ Sunnyvale,CA 94086 <br /> r�. <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Organic Compounds <br /> QC Batch#: SGCMS990304 Date analyzed: 03/04/99 <br /> Matrix: Soil Spiked Sample: Blank Spike <br /> Units: µg/Kg <br /> r PARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> µg/Kg µg/Kg µg/Kg %R µgig %R RPD %R <br /> 11,1-Dichloroethene 18240/82601 25 1 ND 1 27 1106111.1 25 : 102% 1 4.6 1 25 1 50-150 1 <br /> r r r <br /> { ;Methyl-tert-butyl et 8240/82601 25 ND 26 ;103%-' -23 1 90% 12.8 1 25 50-150 <br /> r r r r <br /> ' ;Benzene ;8240/82601; 25 ND 27 1108%r �1 26 1 106% 1 1.9 1 25 1 50-150 ; <br /> t r 1 ! r 1 I 1 <br /> 1Trichloroethene 8240/82601 25 1 ND 1 26 1102%1 26 1 102% 1 0.4 1 25 1 50-150 I <br /> r r i <br /> ,Toluene 18240182601 25 1 ,ND 1 26 1104%1 11 25 1 101% 1 2.7 , 25 1 50-150 1 <br /> 1 1Chlorobenzene 18240/82601 25 1 ND 1 28 1112"/01 28 1 110% 1 2.2 1 25 1 50-150 1 <br /> , <br /> I ) <br /> - Nate: LCS and LCSD results reported for the following Parameter: <br /> .4!l <br /> r� <br /> r <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 /> c SP: Spike Result <br /> SP(%R): Spike%Recovery <br /> SPD: Spike Duplicate Result <br /> r� SPD(%R): Spike Duplicate%Recovery <br /> NC: Not Calculated <br /> { <br /> i <br />