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GENERAL NARRATIVE <br /> Comments: <br /> Test methods may include minor modifications of published EPA methods (e.g. , <br /> reporting limits or parameter lists) . Reporting limits are adjusted to reflect <br /> dilution of the sample when appropriate. Solids and waste are analyzed with no <br /> correction made for moisture content. <br /> Abbreviations and Definitions: <br /> MB Method Blank - An aliquot of a blank matrix carried throughout the <br /> entire analytical process <br /> LCS Laboratory Control Sample - A blank to which known quantities of <br /> specific analytes are added prior to sample preparation and analysis <br /> to assess the accuracy of the method <br /> MS/MSD Matrix Spike/Matrix Spike Duplicate - Duplicate samples to which <br /> known quantities of specific analytes are added prior to sample <br /> preparation and analysis to assess the extent of matrix bias or <br /> interference on analyte recovery <br /> RPD Relative Percent Difference - The measurement of precision between <br /> duplicate analyses <br /> BRL Below Reporting Limit <br /> NS Not Specified <br /> NA Not Applicable <br /> (CN11439) <br /> MBT Environmental Blaster Builders Technologie's <br /> Laboratories ��"�� <br />