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CERTIPICRTIOHS FINO PERrORMRHCE CURLURTIOHS <br /> r <br /> CHEMEST regularly analyzes a variety of internally, and externally <br /> provided CC samples . The submissione analyals, and reviewing of <br /> internal qC samples is monitored by the quality fissurance Officer <br /> and the ULce-President of Technical Services . The submission and <br /> 1 analysis of external CC samples is also monitored by the Quality <br /> Rasurance officer and the Uice-Presidient of Technical Services, <br /> but the results are reviewed by the submitting party. These <br /> samples cone from a variety of sources, which include, but are not <br /> limited by, the following examples. <br /> r o Internal QC Samplesâ–  <br /> a Matrix spikes/matrix spike duplicates <br /> a Blank spikes <br /> 1 o Blind spikes <br /> o External CC Sanplesk <br /> o CPR QC ampules <br /> o CPR blind contract spikes <br /> o CPA periodic contract audit samples <br /> a State QC samples <br /> o CompuChem QC sample& <br /> a Outside vendor QC samples Cie. Cnuironmental Research <br /> Associates} <br /> r a Client specific QC sunples <br /> o Client specific blind OC samplet <br /> r <br /> r <br /> 30 <br />