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• <br />COLUMBIA ANALYTICAL SERVICES, INC. <br />QA/QC Report <br />Client: Shaw Environmental & Infrastructure, Inc. Service Request: L0600992 <br />Project Name : Foothill Landfill Date Collected : 07/27/06 <br />Project Number: 791289 (Ground Water) Date Received: 07/28/06 <br />Sample Matrix: WATER Date Extracted: NA <br />Date Analyzed : 07/28/06 <br />Matrix Spike/Duplicate Matrix Spike Summary <br />Sample Name: <br />MW -2R <br />Units: <br />mg/L (ppm) <br />Lab Code : <br />L0600992-002MS <br />L0600992-002DMS <br />Basis: <br />NA <br />Test Notes <br />Spike <br />Prep Analysis <br />Spike Level Sample Spike Result <br />Recovery <br />CAS <br />Relative <br />Result <br />Analyte <br />Method Method <br />PQL • MS DMS Result MS DMS <br />MS DMS <br />Acceptance <br />Ce <br />Notes <br />Limits <br />Difference <br />Sulfate <br />None 300.0 <br />1 10.0 10.0 2.51 12.4 12.5 <br />99 100 <br />80-120 <br /><1 <br />Approved By /���� <br />Date <br />Report By:SAnderson <br />