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C <br />September 23, 2014 Lab ID : STK1438829 <br />Forward Inc. Customer :3-8692 <br />Quality Control - Inorganic <br />Constituent <br />Method <br />Date/ID <br />Type <br />Units <br />Cone. <br />QC Data <br />DQO <br />Note <br />Wet Chem <br />Nitrogen, Total <br />Kjeldahl <br />EPA351.2 <br />09/16/14:214086AMB <br />CCV <br />mg/L <br />5.000 <br />93.5% <br />90-110 <br />CCB <br />mg/L <br />-0.378 <br />0.5 <br />CCV <br />m <br />5.000 <br />95.0% <br />90-110 <br />Definition <br />CCV <br />: Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br />CCB <br />: Continuing Calibration Blank - Analyzed to verify the instrument baseline is within criteria. <br />Blank <br />: Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br />RgBlk <br />: Method Reagent Blank - Prepared to correct for any reagent contributions to sample result. <br />LCS <br />: Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br />MS <br />: Matrix Spikes - A random sample is spiked with a known amount of analyte. The recoveries are an indication of how that sample <br />matrix affects analyte recovery. <br />MSD <br />: Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyted. The recoveries <br />are an indication of how that sample matrix affects analyte recovery. <br />Dup <br />: Duplicate Sample - A random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />indication of precision for the preparation and analysis. <br />MSRPD <br />: MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br />and analysis. <br />ND <br />: Non -detect - Result was below the DQO listed for the analyte. <br /><'/4 <br />: High Sample Background - Spike concentration was less than one forth of the sample concentration. <br />DQO <br />: Data uali Objective - This is the criteria against which the uali control data is com !red. <br />Explanation <br />440 <br />: Sample nonhomogeneity may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br />735 <br />: Dilution water exceeded DO uptake method criteria <br />Page 9 of 9 9 <br />