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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0900671 <br /> Project: Foothill Landfill,San Joaquin County/124591 (Resample) <br /> Sample Matrix: Water <br /> Surrogate Recovery Summary <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B M .Units: PERCENT <br /> Analysis Method: 8260B -Level: I'ow <br /> Sample Name Lab Code Surf Sur2 Sur3 i <br /> MW73 P0900671-001 106 93 81 <br /> Trip Blank P0900671-002 104 93 86 <br /> Method Blank PWG0900261-4 104 91 84 <br /> Batch QC P0900644-004 107 88 81 <br /> Batch QCMS PWG0900261-1 103 94 90 <br /> Batch QCDMS PWG0900261-2 106 93 89 <br /> Lab Control Sample PWG0900261-3 107 91 92 <br /> Surrogate Recovery Control Limits(%) <br /> Surl = 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 /> 10 <br /> Analyst:KMiller Form 2A-Organic Page 1 of I , <br /> Printed: 03/09/2009 16:14:35 <br /> P:\STEALTH\CRYSTAL.RPT1Form2.rpt SuperSetReference: RR15263 <br />