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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700116 <br />Project: Foothill Landfill, San Joaquin County/791289 (Leachate Module) Date Extracted: 02/13/2007 <br />Sample Matrix: Water Date Analyzed: 02/13/2007 <br />Matrix Spike/Duplicate Matrix Spike Summary <br />Volatile Organic Compounds <br />Sample Name: Batch QC <br />Units: <br />ug/L <br />Lab Code: P0700102-006 <br />Basis: <br />NA <br />Extraction Method: EPA 5030B <br />Level: <br />Low <br />Analysis Method: 8260B <br />Extraction Lot: <br />PWG0700310 <br />Batch QCMS <br />Batch QCDMS <br />PWG0700310-1 <br />PWG0700310-2 <br />Matrix Spike <br />Duplicate Matrix Spike <br />Sample <br />%Rec <br />RPD <br />Analyte Name <br />Result <br />Result <br />Expected <br />%Rec <br />Result <br />Expected <br />%Rec <br />Limits <br />RPD <br />Limit <br />1,1,1 -Trichloroethane (TCA) <br />ND <br />10.6 <br />10.0 <br />106 <br />9.71 <br />10.0 <br />97 <br />65-146 <br />9 <br />25 <br />1,1-Dichloroethane <br />3.2 <br />14.9 <br />10.0 <br />118 <br />14.0 <br />10.0 <br />109 <br />73-131 <br />6 <br />25 <br />1,1-Dichloroethene <br />6.8 <br />18.5 <br />10.0 <br />117 <br />17.1 <br />10.0 <br />103 <br />55-151 <br />8 <br />25 <br />1,2-Dichloroethane (EDC) <br />ND <br />9.44 <br />10.0 <br />94 <br />9.22 <br />10.0 <br />92 <br />63-141 <br />2 <br />25 <br />1,2-Dichloropropane <br />ND <br />10.0 <br />10.0 <br />100 <br />10.4 <br />10.0 <br />104 <br />73-126 <br />3 <br />25 <br />1,3,5-Trimethylbenzene <br />ND <br />9.56 <br />10.0 <br />96 <br />9.12 <br />10.0 <br />91 <br />58-142 <br />5 <br />25 <br />1,3 -Dichlorobenzene <br />ND <br />9.54 <br />10.0 <br />95 <br />9.53 <br />10.0 <br />95 <br />72-133 <br />0 <br />25 <br />Benzene <br />ND <br />10.3 <br />10.0 <br />103 <br />9.71 <br />10.0 <br />97 <br />71-131 <br />6 <br />25 <br />Chlorobenzene <br />ND <br />9.61 <br />10.0 <br />96 <br />9.43 <br />10.0 <br />94 <br />74-129 <br />2 <br />25 <br />Chloroform <br />ND <br />10.3 <br />10.0 <br />103 <br />10.1 <br />10.0 <br />101 <br />70-144 <br />2 <br />25 <br />Ethylbenzene <br />ND <br />9.38 <br />10.0 <br />94 <br />9.01 <br />10.0 <br />90 <br />73-133 <br />4 <br />25 <br />Methyl tert-Butyl Ether <br />ND <br />18.1 <br />20.0 <br />91 <br />18.2 <br />20.0 <br />91 <br />63-131 <br />0 <br />25 <br />Tetrachloroethene (PCE) <br />ND <br />9.51 <br />10.0 <br />95 <br />8.93 <br />10.0 <br />89 <br />66-139 <br />6 <br />25 <br />Toluene <br />ND <br />9.72 <br />10.0 <br />97 <br />9.23 <br />10.0 <br />92 <br />73-132 <br />5 <br />25 <br />Trichloroethene (TCE) <br />7.1 <br />18.8 <br />10.0 <br />117 <br />17.9 <br />10.0 <br />109 <br />58-136 <br />5 <br />25 <br />Vinyl Chloride <br />ND <br />11.6 <br />10.0 <br />116 <br />11.1 <br />10.0 <br />Ht l <br />67-147 <br />4 <br />25 <br />Results flagged with an asterisk (*) indicate values outside control criteria. <br />Results flagged with a pound (t0 indicate the control criteria is not applicable. <br />Percent recoveries and relative percent differences (RPD) are determined by the software using values in the calculation which have not been rounded. <br />Printed: 02/16/2007 08:34:42 Form 3A - Organic Page 1 of 1 <br />P:\STEALTH\CRYSTAL.RP'nFomr.33DMS.rpt SuperSet Reference: RR13372 <br />