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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc <br />Service Request: P0700346 <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 <br />Analysis Method: 8260B <br />Units: PERCENT <br />Level: Low <br />Sample Name Lab Code Surl Sur2 Sura <br />MW -1 P0700346-001 108 110 103 <br />MW -2R P0700346-002 108 114 103 <br />MW -3 P0700346-003 110 112 102 <br />FIELD BLANK P0700346-004 109 109 100 <br />TRIP BLANK P0700346-005 112 109 103 <br />Method Blank PWG0700554-4 111 110 101 <br />Batch QC P0700348-001 103 114 107 <br />Batch QCMS PWG0700554-1 103 114 114 <br />Batch QCDMS PWG0700554-2 105 113 113 <br />Lab Control Sample PWG0700554-3 111 113 113 <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. <br />1 <br />Printed: 04/13/2007 15:48:15 Form 2A - Organic <br />Page 1 of <br />1, <br />P:\STEALTH\CRYSTAL.RPT\Form2.rpt <br />Superset Reference: RR13523 <br />