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1 <br />1 <br />1 <br />1 <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 • NA <br />LCS Matrix: WATER Date Received: NA <br />Date Prepared: NA <br />Date Analyzed : 08/08/06 <br />Laboratory Control Sample/Duplicate Laboratory Control Sample Summary <br />Inorganic Parameters <br />Sample Name: Laboratory Control Sample <br />Lab Code: L0600992-LCS L0600992-DLCS <br />Basis : NA <br />Analysis True Value Result - CAS. Relative <br />Analyte Units. Method LCS DLCS LCS DLCS LCS DLCS Acceptance Percent Result <br />Limits Difference Notes <br />Alkalinity as CaCO3, mg/L SM 2320B 2500 2500 2520 2480 101 99 95-106 2 <br />Total <br />Report By, C.Skillern <br />W <br />