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MAY/21/2014/WED 12:54 PM TRAIOISPOSAL FAX No. 1209832• P.003 <br />J <br />April 10, 2014 Lab ID : STK1432438 <br />Tracy Material Recovery & Solid Waste Tr Customer :3-16455 <br />(duality Control - Inorganic <br />Definition <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 analyted. The recoveries <br />are an indication of how that Sample matrix affItcts analyte recovery. <br />Dup : Dnplilcste Sample - A, random sample with each batch is prepared and analyzed in duplicate. The relative percent difference is an <br />indication of preeisioa for the preparation and analysis. <br />MSRkA : MS/MSD Relative Fement Difference (RFD) - The MS relative percent difference is an indication of precision for the preparation <br />and analysis, <br />ND : Non-dotcct - Result was below the DQO listed for the analyte. <br />DOO : Data Oualitv Obiective - This is the criteria aesinst which the aualitv control data is eomnared. <br />: Samole matrix tnav be affecting this analvte. Data was accented based on the LCS or <br />Page 6 of 6 <br />