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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0802431 <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 Surf Sur2 Sur3 <br /> MW-2R P0802431-001 104 105 94 <br /> MW-4 P0802431-002 104 104 93 <br /> MW-5 P0802431-003 100 104 91 <br /> LW-1 P0802431-004 101 104 93 <br /> Method Blank PWG0801029-4 101 106 96 <br /> Batch QC P0802444-001 104 104 94 <br /> Batch QCMS PWG0801029-1 103 102 96 <br /> Batch QCDMS PWG0801029-2 105 102 95 <br /> Lab Control Sample PWG0801029-3 102 105 99 <br /> Surrogate Recovery Control Limits(%) <br /> Surl = Dibromofluoromethane 75-124 <br /> Sur2 = Toluene-d8 74-125 <br /> Sul-3 = 4-Bromofluorobenzene 65-126 <br /> Results nagged with anasterisk(*)indicate values outside control criteria. <br /> Results flagged with a pound(#)indicate the control criteria is not applicable. <br /> 3 <br /> Analyst:KMiller Form 2A-Organic Page I of I <br /> Printed: 08/13/2008 16:41:01 <br /> P:\STEALTH\CRYS7'AL.RPRForm2.tpt - SuperSetReference: RR14904 <br />