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December 10 , 2019 Lab ID : STK1956431 <br /> Metal Finishing Solutions, Inc. Customer : 348181 <br /> Quality Control - Organic <br /> Definition <br /> CCV : Continuing Calibration Verification - Analyzed to verify the instrument calibration is within criteria. <br /> Blank : Method Blank - Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS : Laboratory Control Standard/Sample - Prepared to verify that the preparation process is not affecting analyte recovery. <br /> MS : 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 : Matrix Spike Duplicate of MS/MSD pair - A random sample duplicate is spiked with a known amount of analyte. The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> BS : Blank Spikes - A blank is spiked with a known amount of analyte. It is prepared to verify that the preparation process is not <br /> affecting analyte recovery. <br /> BSD : Blank Spike Duplicate of BS/BSD pair - A blank duplicate is spiked with a known amount of analyte. It is prepared to verify that <br /> the preparation process is not affecting analyte recovery. <br /> MSRPD MS/MSD Relative Percent Difference (RPD) - The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> BSRPD : BS/BSD Relative Percent Difference (RPD) - The BS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND : Non-detect - Result was below the DQO listed for the analyte. <br /> DQO : Data Quality Objective - This is the criteria against which the quality control data is compared . <br /> Explanation <br /> 310 : LCS above Acceptance Range (AR). Samples which were non detect for this analyte were accepted . <br /> 360 : CCV above Acceptance Range (AR). Samples which were non detect for this analyte were accepted . <br /> 410 : Relative Percent Difference (RPD) not within Maximum Allowable Value (MAV). Data was accepted based on the LCS or CCV <br /> recovery. <br /> 435 : Sample matrix may be affecting this analyte. Data was accepted based on the LCS or CCV recovery. <br /> 436 : Blank Spike (BS ) not within Acceptance Range (AR). Data was accepted based on the LCS or CCV recovery. <br /> Page 28 of 28 <br /> i <br /> G <br /> k <br />