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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc Service Request: P0700704 <br />Project: Foothill Landfill, San Joaquin County (New Wells)/124591 <br />Sample Matrix: Water <br />Surrogate Recovery Summary <br />Semi -Volatile Organic Compounds by GC/MS <br />Extraction Method: EPA 3520C Units: PERCENT <br />Analysis Method: 8270C Level: Low <br />Sample Name <br />Lab Code <br />Surf <br />Sur2 <br />Sura <br />Sur4 <br />Sur5 <br />Sur6 <br />MW -4 <br />P0700704-001 <br />66 <br />68 <br />80 <br />75 <br />78 <br />76 <br />MW -5 <br />P0700704-002 <br />68 <br />69 <br />84 <br />83 <br />75 <br />84 <br />Method Blank <br />KWG0708458-8 <br />61 <br />61 <br />74 <br />66 <br />71 <br />81 <br />MW-5MS <br />KWG0708458-1 <br />64 <br />64 <br />69 <br />77 <br />87 <br />85 <br />Lab Control Sample <br />KWG0708458-2 <br />64 <br />62 <br />67 <br />75 <br />85 <br />85 <br />Duplicate Lab Control Sample <br />KWG0708458-3 <br />69 <br />70 <br />77 <br />80 <br />84 <br />85 <br />Lab Control Sample <br />KWG0708458-4 <br />61 <br />63 <br />68 <br />81 <br />83 <br />84 <br />Duplicate Lab Control Sample <br />KWG0708458-5 <br />71 <br />73 <br />77 <br />82 <br />86 <br />86 <br />Lab Control Sample <br />KWG0708458-6 <br />70 <br />66 <br />86 <br />81 <br />83 <br />77 <br />Duplicate Lab Control Sample <br />KWG0708458-7 <br />62 <br />61 <br />72 <br />72 <br />75 <br />73 <br />Surrogate Recovery Control Limits (% <br />Surl = 2-Fluorophenol 12-123 Sur5 = 2,4,6-Tribromophenol 22-152 <br />Sul -2 = Phenol -d6 19-122 Sur6 = Terphenyl-d14 20-155 <br />Sur3 = Nitrobenzene -0 25-121 <br />Sur4 = 2-Fluorobiphenyl 24-119 <br />Results flagged with an asterisk (") indicate values outside control criteria. <br />Results flagged with a pound (f) indicate the control criteria Is not applicable. <br />106 00OF6 <br />Printed: 08/30/2007 14:42:57 Form 2A - Organic Page 1 of 1 <br />uAStaalth\'"I.rptTann2.rpt SuperSetReference: RR76030 <br />