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~,, aceAnalytieal <br />wu~w.pacelabs.com <br />QUALITY CONTROL DATA <br />Project: 79019.00 ELK RIVER-OLD CITY DU <br />Pace Project No.: 10192537 <br />Pace Analytical Services, Inc. <br />1700 Elm Street -Suite 200 <br />Minneapolis, MN 55414 <br />(612)607-1700 <br />SAMPLE DUPLICATE: 1200784 <br /> <br />Parameter <br /> <br />Units <br />10192262004 <br />Result <br />Dup <br />Result <br />Isopropylbenzene (Cumene) ug/L ND ND <br />m&p-Xylene ug/L ND ND <br />Methyl-tert-butyl ether ug/L ND ND <br />Methylene Chloride ug/L ND ND <br />n-Butylbenzene ug/L ND ND <br />n-Propylbenzene ug/L ND ND <br />Naphthalene ug/L ND .15J <br />o-Xylene ug/L ND ND <br />p-Isopropyltoluene ug/L ND ND <br />sec-Butylbenzene ug/L ND ND <br />Styrene ug/L ND ND <br />tert-Butylbenzene ug/L ND ND <br />Tetrachloroethene ug/L 5.4 6.5 <br />Tetrahydrofuran ug/L ND ND <br />Toluene ug/L ND .19J <br />trans-1,2-Dichloroethene ug/L 14.0 14.3 <br />trans-l,3-Dichloropropene ug/L ND ND <br />Trichloroethene ug/L 29.6 30.9 <br />Trichlorofluoromethane ug/L ND ND <br />Vinyl chloride ug/L 1.0 1.1 <br />Xylene (Total) ug1L ND ND <br />1,2-Dichloroethane-d4 (S) % 104 106 <br />4-Bromofluorobenzene (S) % 102 100 <br />Dibromofluoromethane (S) % 102 104 <br />Toluene-d8 (S) % 101 g8 <br />Date: 05/21/2012 03:19 PM <br />RPD <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 />19 <br />2 <br />4 <br />10 <br />1 <br />2 <br />2 <br />2 <br />Max <br />RPD <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />30 <br />Qualifiers <br />Page 17 of 19 <br />17 of 21 <br />