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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0800191 <br /> Project: Foothill Landfill, San Joaquin County/124591 (Ground Water) <br /> Sample Matrix: Water <br /> Surrogate Recovery Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B Units: PERCENT <br /> Analysis Method: 8260B Level: Low <br /> Sample Name Lab Code Surl Sur2 Sur3 <br /> MW-1 P0800191-001 103 100 88 <br /> MW-4 P0800191-002 103 101 88 <br /> LW-I P0800191-003 102 101 86 <br /> Method Blank PWG0800288-4 106 100 88 <br /> Lab Control Sample PWG0800288-3 103 102 99 <br /> Duplicate Lab Control Sample PWG0800288-5 101 104 97 <br /> Surrogate Recovery Control Limits(%) <br /> Surl = Dibromofluoromethane 73-129 <br /> Sur2 = Toluene-d8 76-122 <br /> Sur3 = 4-Bromofluorobenzene 63-118 <br /> Results flagged with an asterisk(*)indicate values outside control criteria. <br /> Results flagged with a pound(#)indicate the control criteria is not applicable. 20 <br /> Printed: 02/13/2008 12:11:23 Form 2A-Organic Page I of I <br /> P:\STL-ALTti\CRYSTAL.RPT\Fonn2.ipt Super Set Reference: RR14351 <br />