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(�Iacmnalyfical- <br />www.pacelabs.com <br />QUALITY CONTROL DATA <br />Pace Analytical Services, Inc. <br />9608 Loiret Blvd. <br />Lenexa, KS 66219 <br />(913)599 -5665 <br />Project: Colorado Flagstone <br />Pace Project No.: 60165959 <br />MATRIX SPIKE & MATRIX SPIKE DUPLICATE: <br />1352820 <br />1352821 <br />MS <br />MSD <br />60165959009 Spike <br />Spike <br />MS <br />MSD <br />MS <br />MSD <br />% Rec <br />Max <br />Parameter <br />Units <br />Result Conc. <br />Conc. <br />Result <br />Result <br />% Rec <br />% Rec <br />Limits <br />RPD <br />RPD Qual <br />Ethylbenzene <br />mg /kg <br />ND <br />.1 .098 <br />0.072 <br />0.080 <br />71 <br />80 <br />10 -154 <br />10 <br />42 <br />Hexachloro -1,3- butadiene <br />mg /kg <br />ND <br />.1 .098 <br />0.023 <br />0.029 <br />23 <br />30 <br />10 -151 <br />21 <br />50 <br />Isopropylbenzene (Cumene) <br />mg /kg <br />ND <br />.1 .098 <br />0.053 <br />0.057 <br />53 <br />58 <br />10 -159 <br />7 <br />49 <br />Methyl -tert-butyl ether <br />mg /kg <br />ND <br />.1 .098 <br />0.090 <br />0.10 <br />90 <br />102 <br />20 -148 <br />10 <br />38 <br />Methylene chloride <br />mg /kg <br />ND <br />.1 .098 <br />0.085 <br />0.093 <br />84 <br />94 <br />15 -140 <br />10 <br />46 <br />n- Butylbenzene <br />mg /kg <br />ND <br />.1 .098 <br />0.039 <br />0.044 <br />39 <br />45 <br />10 -148 <br />14 <br />50 <br />n- Propylbenzene <br />mg /kg <br />ND <br />.1 .098 <br />0.069 <br />0.077 <br />69 <br />79 <br />10 -146 <br />11 <br />50 <br />Naphthalene <br />mg /kg <br />ND <br />.1 .098 <br />0.054 <br />0.062 <br />51 <br />60 <br />10 -160 <br />14 <br />45 <br />p- Isopropyltoluene <br />mg /kg <br />ND <br />.1 .098 <br />0.046 <br />0.054 <br />44 <br />54 <br />10 -149 <br />17 <br />49 <br />sec - Butylbenzene <br />mg /kg <br />ND <br />.1 .098 <br />0.045 <br />0.051 <br />45 <br />52 <br />10 -150 <br />13 <br />50 <br />Styrene <br />mg /kg <br />ND <br />.1 .098 <br />0.073 <br />0.080 <br />73 <br />82 <br />10 -142 <br />10 <br />44 <br />tert-Butyl benzene <br />mg /kg <br />ND <br />.1 .098 <br />0.055 <br />0.061 <br />55 <br />63 <br />10 -151 <br />12 <br />48 <br />Tetrachloroethene <br />mg /kg <br />0.082 <br />.1 .098 <br />0.13 <br />0.13 <br />44 <br />49 <br />10 -150 <br />3 <br />48 <br />Toluene <br />mg /kg <br />ND <br />.1 .098 <br />0.079 <br />0.086 <br />79 <br />88 <br />11 -150 <br />8 <br />40 <br />trans- 1,2- Dichloroethene <br />mg /kg <br />ND <br />.1 .098 <br />0.092 <br />0.10 <br />92 <br />104 <br />20 -140 <br />11 <br />42 <br />trans- 1,3- Dichloropropene <br />mg /kg <br />ND <br />.1 .098 <br />0.097 <br />0.11 <br />97 <br />109 <br />10 -149 <br />10 <br />41 <br />Trichloroethene <br />mg /kg <br />ND <br />.1 .098 <br />0.087 <br />0.097 <br />84 <br />97 <br />14 -146 <br />11 <br />45 <br />Trichlorofluoromethane <br />mg /kg <br />ND <br />.1 .098 <br />0.098 <br />0.11 <br />98 <br />107 <br />24 -130 <br />7 <br />41 <br />Vinyl chloride <br />mg /kg <br />ND <br />.1 .098 <br />0.11 <br />0.11 <br />107 <br />115 <br />19 -131 <br />6 <br />37 <br />Xylene (Total) <br />mg /kg <br />ND <br />.3 .29 <br />0.20 <br />0.22 <br />67 <br />74 <br />10 -154 <br />8 <br />41 <br />1,2- Dichloroethane -d4 (S) <br />% <br />111 <br />100 <br />75 -129 <br />4- Bromofluorobenzene (S) <br />% <br />88 <br />85 <br />76 -123 <br />Toluene -d8 (S) <br />% <br />93 <br />93 <br />80 -120 <br />REPORT OF LABORATORY ANALYSIS <br />This report shall not be reproduced, except in full, <br />Date: 04/03/2014 04:47 PM without the written consent of Pace Analytical Services, Inc.. <br />Page 43 of 48 <br />