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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0900161 <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-3 P0900161-001 94 101 92 <br /> MW-5 P0900161-002 95 100 93 <br /> Trip Blank P0900161-003 97 101 93 <br /> Method Blank PWG0900148-4 93 103 92 <br /> Batch QC P0900186-004 96 103 92 <br /> Batch QCMS PWG0900148-1 95 101 97 <br /> Batch QCDMS PWG0900148-2 94 102 97 <br /> Lab Control Sample PWG0900148-3 100 99 99 <br /> S <br /> Surrogate Recovery Control Limits(%) <br /> Surf = Dibromofluoromethane 62-122 <br /> Sur2 = Toluene-d8 50-128 <br /> Sur3 = 4-Bromofluorobenzene 51-114 <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 /> 2 <br /> Analyst:KMiller Form 2A-Organic Page 1 of 1 <br /> Printed: 01/23/2009 10:05:00 <br /> P:\STEALTH\CRYSTAL.RPT\Form2.rpt SuperSetReference: RR15207 <br />