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COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc <br />Project: Foothill Landfill, San Joaquin County/791289 (Leachate Module) <br />ample Matrix: Water <br />extraction Method: EPA 5030B <br />Analysis Method: 8260B <br />1 <br />'Analyte Name <br />Lab Control Spike Summary <br />Volatile Organic Compounds <br />Lab Control Sample <br />PWG0700310-3 <br />Lab Control Spike <br />%R0C <br />Result Expected %Rec Limits <br />Service Request: P0700116 <br />Date Extracted: 02/13/2007 <br />Date Analyzed: 02/13/2007 <br />Units: <br />ug/L <br />Basis: <br />NA <br />Level: <br />Low <br />Extraction Lot: <br />PWG0700310 <br />IF.yi l-1 if v 1V./yChloride 9.87 10.0 99 68-134 <br />s flagged with an asterisk (*) indicate values outside control criteria. <br />fee""" <br />t recoveries and relative percent differences (RPD) are determined by the software using values in the calculation which have not been rounded. <br />15 <br />ranted: 02/16/2007 08:34:46 Form 3C - Organic Page 3 of 3 <br />\STEALTH\CRYSTAL.RPTTorm3LCS.rpt SuperSet Reference: RR13372 <br />