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COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: Shaw Environmental&Infrastructure,Inc Service Request: P0700376 <br /> roject: Corral Hollow Landfill,San Joaquin County/124592(Ground Water) <br /> Sample Matrix: Water <br /> Surrogate Recovery Summary <br /> Volatile Organic Compounds <br /> xtraction Method: EPA 5030B Units: PERCENT <br /> alysis Method: 8260B Level: Low <br /> am le Name Lab Code Surl Sur2 Sura <br /> MW-4 P0700376-001 102 91 87 <br /> W-5 P0700376-002 103 92 87 <br /> B-1 P0700376-003 102 92 86 <br /> W-6 P0700376-004 104 91 85 <br /> MW-7 P0700376-005 102 91 84 <br /> IELD BLANK P0700376-006 103 92 87 <br /> WRIP BLANK P0700376-007 104 92 91 <br /> Method Blank PWG0700595-4 102 92 89 <br /> ethod Blank PWG0700642-4 103 92 91 <br /> Watch QC P0700378-002 102 93 92 <br /> SB-IMS PWG0700595-1 102 93 96 <br /> (atch <br /> -IDMS PWG0700595-2 102 95 97 <br /> QCMS PWG0700642-1 103 94 98 <br /> tch QCDMS PWG0700642-2 167 * 153 * 158 <br /> Lab Control Sample PWG0700595-3 105 95 100 <br /> ontrol Sample PWG0700642-3 105 94 99 <br /> arrogate Recovery Control Limits(%) <br /> url = Dibromofluoromethane 73-129 <br /> Sur2 = Toluene-d8 76-122 <br /> ur3 = 4-Bromofluorobenzene 63-118 <br /> AIL <br /> rflflagg,d with an asterisk(*)indicate values outside control criteria. <br /> agged with a pound(#)indicate the control criteria is not applicable. <br /> 32 <br /> trinted: 04/25/2007 10:50:42 Form 2A-Organic Page 1 of 1 <br /> ,:\STEALTMCRYSTAL.RPT\Fomi2.rpt Superset Reference: RR13545 <br />