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IF <br />7 <br />fl <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700115 <br />Project: Foothill Landfill, San Joaquin County/791289 (Ground Water) Date Extracted: 02/12/2007 <br />Sample Matrix: Water Date Analyzed: 02/12/2007 <br />Sample Name: <br />Batch QC <br />Lab Code: <br />P0700112-002 <br />Extraction Method: <br />EPA 5030B <br />Analysis Method: <br />8260B <br />Matrix Spike/Duplicate Matrix Spike Summary <br />Volatile Organic Compounds <br />Units: <br />ug/L <br />Basis: <br />NA <br />Level: <br />Low <br />Extraction Lot: <br />PWG0700304 <br />'J <br />1 Results flagged with an asterisk (*) indicate values outside control criteria. <br />Results flagged with a pound (#) 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 11:12:44 Form 3A - Organic Page 1 of 1 <br />P:\STEALTH\CRYSTAL.RPT%Fonn3DMS.rpt SuperSetReference: RR13379 <br />11 <br />Analyte Name <br />Sample <br />Result <br />Batch QCMS <br />PWG0700304-1 <br />Matrix Spike <br />Result Expected <br />%Rec <br />Batch QCDMS <br />PWG0700304-2 <br />Duplicate Matrix Spike <br />Result Expected %Rec <br />%Rec <br />Limits <br />RPD <br />RPD <br />Limit <br />1,1,1-Trichloroethane(TCA) <br />6.5 <br />17.1 <br />10.0 <br />106 <br />15.5 <br />10.0 <br />90 <br />65-146 <br />10 <br />25 <br />1,1-Dichloroethane <br />0.49 <br />11.1 <br />10.0 <br />106 <br />10.5 <br />10.0 <br />100 <br />73-131 <br />5 <br />25 <br />1,1-Dichloroethene <br />1.2 <br />11.9 <br />10.0 <br />107 <br />11.3 <br />10.0 <br />101 <br />55-151 <br />5 <br />25 <br />1,2-Dichloroethane (EDC) <br />ND <br />9.27 <br />10.0 <br />93 <br />8.95 <br />10.0 <br />90 <br />63-141 <br />4 <br />25 <br />1,2-Dichloropropane <br />ND <br />10.1 <br />10.0 <br />101 <br />9.87 <br />10.0 <br />99 <br />73-126 <br />2 <br />25 <br />1,3,5-Trimethylbenzene <br />ND <br />9.02 <br />10.0 <br />90 <br />9.04 <br />10.0 <br />90 <br />58-142 <br />0 <br />25 <br />1,3 -Dichlorobenzene <br />ND <br />9.73 <br />10.0 <br />97 <br />9.20 <br />10.0 <br />92 <br />72-133 <br />6 <br />25 <br />Benzene <br />ND <br />10.2 <br />10.0 <br />102 <br />9.55 <br />10.0 <br />96 <br />71-131 <br />7 <br />25 <br />Chlorobenzene <br />ND <br />9.66 <br />10.0 <br />97 <br />9.23 <br />10.0 <br />92 <br />74-129 <br />5 <br />25 <br />Chloroform <br />ND <br />10.2 <br />10.0 <br />102 <br />9.74 <br />10.0 <br />97 <br />70-144 <br />4 <br />25 <br />Ethylbenzene <br />ND <br />9.25 <br />10.0 <br />93 <br />8.99 <br />10.0 <br />90 <br />73-133 <br />3 <br />25 <br />Methyl tert-Butyl Ether <br />ND <br />18.1 <br />20.0 <br />90 <br />17.8 <br />20.0 <br />89 <br />63-131 <br />1 <br />25 <br />Tetrachloroethene (PCE) <br />1.5 <br />11.0 <br />10.0 <br />95 <br />10.3 <br />10.0 <br />89 <br />66-139 <br />6 <br />25 <br />IToluene <br />ND <br />9.75 <br />10.0 <br />98 <br />9.29 <br />10.0 <br />93 <br />73-132 <br />5 <br />25 <br />Trichloroethene (TCE) <br />4.9 <br />14.5 <br />10.0 <br />96 <br />13.2 <br />10.0 <br />83 <br />58-136 <br />10 <br />25 <br />Vinyl Chloride <br />ND <br />11.9 <br />10.0 <br />119 <br />10.2 <br />10.0 <br />102 <br />67-147 <br />15 <br />25 <br />'J <br />1 Results flagged with an asterisk (*) indicate values outside control criteria. <br />Results flagged with a pound (#) 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 11:12:44 Form 3A - Organic Page 1 of 1 <br />P:\STEALTH\CRYSTAL.RPT%Fonn3DMS.rpt SuperSetReference: RR13379 <br />11 <br />