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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: L060077 <br /> Project: North County Landfill,San Joaquin County/791288 <br /> Sample Matrix: Water <br /> Surrogate Recovery Summary Y <br /> Volatile Organic Compounds <br /> Extraction Method: EPA 5030B <br /> Analysis Method: 8260B Units: PERCENT <br /> Level• Low <br /> Sample Name Lab Code Surl Sur2 Sur3 <br /> G-4 L0600776-001 117 103 91 <br /> G-5 L0600776-002 114 105 93 <br /> G-6 L0600776-003 114 105 89 <br /> FIELD BLANK L0600776-004 113 101 89 <br /> TRIP BLANK L0600776-005 119 107 89 <br /> Method Blank LWG06011084 114 105 87 <br /> Method Blank LWG06011124 113 101 86 <br /> Batch QC L0600772-001 117 110 93 <br /> Batch QC L0600775-003 .116 106 90 <br /> Batch QCMS LWG0601108-1 112 109 93 <br /> Batch QCDMS LWG0601108-2 113 104 91 <br /> Batch QCMS LWG0601112-1 110 104 97 <br /> Batch QCDMS LWG0601112-2 114 107 97 <br /> Lab Control Sample LWG0601108-3 108 101 92 <br /> Lab Control Sample LWG0601112-3 110 104 90 <br /> Surrogate Recovery Control Limits(%) <br /> Surl = Dibromofluoromethane 77-126 <br /> Sur2 = Toluene-d8 77-119 <br /> Sur3 = 4-Bromofluorobenzene 74-121 <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 /> 26 <br /> printpA- nf/1ZNnl14 112.c1.1n <br />