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'1 <br />0 <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700704 <br />Project: Foothill Landfill, San Joaquin County (New Wells)/124591 Date Extracted: 08/06/2007 <br />Sample Matrix: Water Date Analyzed: 08/14/2007 <br />Sample Name: <br />MW -5 <br />Lab Code: <br />Extraction Method: <br />P0700704-002 <br />EPA 35200 <br />Analysis Method: <br />8270C <br />fl <br />0 <br />fl <br />Matrix Spike Summary <br />Semi -Volatile Organic Compounds by GC/MS <br />Units: <br />ug/L <br />Basis: <br />NA <br />Level: <br />Low <br />Extraction Lot: <br />KWG0708458 <br />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 (RPU) are determined by the software using in the calculation which have not been rounded. <br />Printed: 08/30/2007 14:43:00 Fonn 3A -)Organic <br />u:\Stealth\Crystal.rpt\Form3MS.rpt SuperSet iteference: <br />i <br />000is <br />Page I of I <br />RR76030 <br />MW-5MS <br />KWG0708458-1 <br />Sample <br />Matrix Spike <br />%Rec <br />Analyte Name <br />Result <br />Result <br />Expected <br />%Rec <br />Limits <br />Phenol <br />ND <br />63.0 <br />94.3 <br />67 <br />25-132 <br />2 -Chlorophenol <br />ND <br />69.5 <br />94.3 <br />74 <br />39-113 <br />N-Nitrosodi-n-propylamine <br />ND <br />68.0 <br />94.3 <br />72 <br />35-127 <br />4-Chloro-3-methylphenol <br />ND <br />74.6 <br />94.3 <br />79 <br />37-132 <br />Acenaphthene <br />ND <br />76.1 <br />94.3 <br />81 <br />46-112 <br />4-Nitrophenol <br />ND <br />87.9 <br />94.3 <br />93 <br />37-150 <br />2,4-Dinitrotoluene <br />ND <br />87.7 <br />94.3 <br />93 <br />45-135 <br />Pentachlorophenol <br />ND <br />86.9 <br />94.3 <br />92 <br />33-152 <br />Pyrene <br />ND <br />77.7 <br />94.3 <br />82 <br />39-126 <br />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 (RPU) are determined by the software using in the calculation which have not been rounded. <br />Printed: 08/30/2007 14:43:00 Fonn 3A -)Organic <br />u:\Stealth\Crystal.rpt\Form3MS.rpt SuperSet iteference: <br />i <br />000is <br />Page I of I <br />RR76030 <br />