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aceAnal~tical <br />wwrw.pnce/rebs.com <br />QUALIFIERS <br />Project: 79019.00 ELK RIVER-OLD CITY DU <br />Pace Project No.: 10192537 <br />DEFINITIONS <br />DF -Dilution Factor, if reported, represents the factor applied to the reported data due to changes in sample preparation, dilution of <br />the sample aliquot, or moisture content. <br />ND -Not Detected at or above adjusted reporting limit. <br />J -Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit. <br />MDL-Adjusted Method Detection Limit. <br />S -Surrogate <br />1,2-Diphenylhydrazine (8270 listed analyte) decomposes to Azobenzene. <br />Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values. <br />LCS(D) -Laboratory Control Sample (Duplicate) <br />MS(D) -Matrix Spike (Duplicate) <br />DUP -Sample Duplicate <br />RPD -Relative Percent Difference <br />NC -Not Calculable. <br />SG -Silica Gel -Clean-Up <br />U -Indicates the compound was analyzed for, but not detected. <br />N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for <br />each analyte is a combined concentration. <br />Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes. <br />TNI -The NELAC Institute. <br />ANALYTE QUALIFIERS <br />1 M Post-analysis pH measurement indicates insufficient VOA sample preservation. Therefore, analysis was conducted <br />outside the recognized method holding time. <br />Date: 05/21/2012 03:19 PM <br />REPORT OF LABORATORY ANALYSIS <br />This report shall not be reproduced, except in full, <br />without the written consent of Pace Analytical Services, Inc.. <br />Pace Analytical Services, Inc. <br />1700 Elm Street -Suite 200 <br />Minneapolis, MN 55414 <br />(612)607-1700 <br />Page 18 of 19 <br />18 of 21 <br />