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Pace Analytical Services,Inc. <br /> s 1700 Elm Street-Suite 200 <br /> laceAnaVical Minneapolis,MN 55414-1700 <br /> awwpacelaEs.mar (612)607-1700 <br /> QUALITY CONTROL DATA <br /> Project: Former Mansfield Property <br /> Pace Project No.: 10265761 <br /> QC Batch: MSV/27010 Analysis Method: EPA 8260 <br /> QC Batch Method: EPA 8260 Analysis Description: 8260 MSV UST-WATER <br /> Associated Lab Samples: 10265761002 <br /> METHOD BLANK: 1674328 Matrix: Water <br /> Associated Lab Samples: 10265761002 <br /> Blank Reporting <br /> Parameter Units Result Limit Analyzed Qualifiers <br /> Benzene ug/L ND 1.0 05/07/14 15:01 <br /> Ethylbenzene ug/L NO 1.0 05/07/14 15:01 <br /> Toluene ug/L NO 1.0 05/07/1415:01 <br /> Xylene(Total) ug/L NO 3.0 05/07/14 15:01 <br /> 1,2-Dichloroelhaned4(S) %. 92 75-125 05/07/1415:01 <br /> 4-Bromofluorobenzene(S) %. 98 75-125 05/07/14 15:01 <br /> Toluened8(S) %. 103 75-125 05/07/14 15:01 <br /> LABORATORY CONTROL SAMPLE: 1674329 <br /> Spike LCS LCS %Rec <br /> Parameter Units Conc. Result %Rec Limits Qualifiers <br /> Benzene ug/L 20 16.6 83 75-125 <br /> Ethylbenzene ug/L 20 18.9 94 75-125 <br /> Toluene ug/L 20 18.3 92 75-125 <br /> Xylene(Total) ug/L 60 58.1 97 75-125 <br /> 1,2-Dichloroethaned4(S) % 92 75-125 <br /> 4-Bromofluorobenzene(S) %. 94 75-125 <br /> Toluened8(S) °k. 101 75-125 <br /> MATRIX SPIKE&MATRIX SPIKE DUPLICATE: 1674210 1674211 <br /> MS MSD <br /> 10266074005 Spike Spike MS MSD MS MSD %Rec <br /> Parameter Units Result Conc. Conic. Result Result %Rec %Rec Limits RPD Qual <br /> Benzene ug/L NO 100 100 86.5 86.2 87 86 75-129 .4 <br /> Ethylbenzene ug/L ND 100 100 93.3 92.1 93 92 75-128 1 <br /> Toluene ug/L NO 100 100 90.6 88.4 91 88 75.129 2 <br /> Xylene(Total) ug/L NO 300 300 286 278 95 93 75-129 3 <br /> 1,2-Dichloroethaned4(S) % 98 94 75-125 <br /> 4-Bromofluorobenzene(S) %. 95 95 75-125 <br /> Toluened8(S) % 97 100 75-125 <br /> REPORT OF LABORATORY ANALYSIS <br /> This report shall not be reproduced,except in full, <br /> Date:05/09/2014 02:51 PM without the written consent of Pace Analytical Services,Inc.. Page 32 of 41 <br />