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(�Iacmnalyfical' <br />www.pacelabs.com <br />QUALITY CONTROL DATA <br />Project: Colorado Flagstone <br />Pace Project No.: 60165959 <br />LABORATORY CONTROL SAMPLE: <br />Parameter <br />1352819 <br />Units <br />Spike <br />Conc. <br />LCS <br />Result <br />LCS <br />% Rec <br />% Rec <br />Limits <br />1,2- Dichloropropane <br />mg /kg <br />.1 <br />0.097 <br />97 <br />80 -120 <br />1,3,5- Trimethylbenzene <br />mg /kg <br />.1 <br />0.086 <br />86 <br />78 -120 <br />1,3- Dichlorobenzene <br />mg /kg <br />.1 <br />0.086 <br />86 <br />80 -120 <br />1,3- Dichloropropane <br />mg /kg <br />.1 <br />0.080 <br />80 <br />75 -120 <br />1,4- Dichlorobenzene <br />mg /kg <br />.1 <br />0.085 <br />85 <br />80 -120 <br />2,2- Dichloropropane <br />mg /kg <br />.1 <br />0.091 <br />91 <br />65 -129 <br />2- Chlorotoluene <br />mg /kg <br />.1 <br />0.082 <br />82 <br />80 -120 <br />4- Chlorotoluene <br />mg /kg <br />.1 <br />0.086 <br />86 <br />77 -120 <br />4- Methyl -2- pentanone (MIBK) <br />mg /kg <br />.5 <br />0.48 <br />96 <br />71 -128 <br />Benzene <br />mg /kg <br />.1 <br />0.094 <br />94 <br />80 -120 <br />Bromobenzene <br />mg /kg <br />.1 <br />0.089 <br />89 <br />80 -122 <br />Bromochloromethane <br />mg /kg <br />.1 <br />0.089 <br />89 <br />76 -122 <br />Bromodichloromethane <br />mg /kg <br />.1 <br />0.094 <br />94 <br />80 -120 <br />Bromoform <br />mg /kg <br />.1 <br />0.091 <br />91 <br />75 -124 <br />Bromomethane <br />mg /kg <br />.1 <br />0.083 <br />83 <br />38 -150 <br />Carbon disulfide <br />mg /kg <br />.1 <br />0.097 <br />97 <br />58 -137 <br />Carbon tetrachloride <br />mg /kg <br />.1 <br />0.10 <br />105 <br />75 -140 <br />Chlorobenzene <br />mg /kg <br />.1 <br />0.085 <br />85 <br />80 -120 <br />Chloroethane <br />mg /kg <br />.1 <br />0.086 <br />86 <br />65 -127 <br />Chloroform <br />mg /kg <br />.1 <br />0.093 <br />93 <br />74 -120 <br />Chloromethane <br />mg /kg <br />.1 <br />0.072 <br />72 <br />39 -138 <br />cis- 1,2- Dichloroethene <br />mg /kg <br />.1 <br />0.097 <br />97 <br />76 -124 <br />cis- 1,3- Dichloropropene <br />mg /kg <br />.1 <br />0.088 <br />88 <br />82 -120 <br />Dibromochloromethane <br />mg /kg <br />.1 <br />0.091 <br />91 <br />80 -124 <br />Dibromomethane <br />mg /kg <br />.1 <br />0.095 <br />95 <br />80 -120 <br />Dichlorodifluoromethane <br />mg /kg <br />.1 <br />0.063 <br />63 <br />16 -135 <br />Ethylbenzene <br />mg /kg <br />.1 <br />0.090 <br />90 <br />80 -120 <br />Hexachloro -1,3- butadiene <br />mg /kg <br />.1 <br />0.093 <br />93 <br />73 -138 <br />Isopropylbenzene (Cumene) <br />mg /kg <br />.1 <br />0.096 <br />96 <br />80 -136 <br />Methyl -tert-butyl ether <br />mg /kg <br />.1 <br />0.093 <br />93 <br />78 -121 <br />Methylene chloride <br />mg /kg <br />.1 <br />0.085 <br />85 <br />70 -123 <br />n- Butylbenzene <br />mg /kg <br />.1 <br />0.091 <br />91 <br />72 -132 <br />n- Propylbenzene <br />mg /kg <br />.1 <br />0.088 <br />88 <br />72 -127 <br />Naphthalene <br />mg /kg <br />.1 <br />0.090 <br />90 <br />77 -126 <br />p- Isopropyltoluene <br />mg /kg <br />.1 <br />0.093 <br />93 <br />78 -128 <br />sec - Butylbenzene <br />mg /kg <br />.1 <br />0.087 <br />87 <br />73 -134 <br />Styrene <br />mg /kg <br />.1 <br />0.087 <br />87 <br />79 -120 <br />tert- Butylbenzene <br />mg /kg <br />.1 <br />0.089 <br />89 <br />77 -130 <br />Tetrachloroethene <br />mg /kg <br />.1 <br />0.090 <br />90 <br />78 -128 <br />Toluene <br />mg /kg <br />.1 <br />0.092 <br />92 <br />79 -120 <br />trans -1,2- Dichloroethene <br />mg /kg <br />.1 <br />0.093 <br />93 <br />76 -124 <br />trans- 1,3- Dichloropropene <br />mg /kg <br />.1 <br />0.092 <br />92 <br />80 -124 <br />Trichloroethene <br />mg /kg <br />.1 <br />0.096 <br />96 <br />80 -120 <br />Trichlorofluoromethane <br />mg /kg <br />.1 <br />0.091 <br />91 <br />64 -126 <br />Vinyl chloride <br />mg /kg <br />.1 <br />0.082 <br />82 <br />57 -132 <br />Xylene (Total) <br />mg /kg <br />.3 <br />0.26 <br />86 <br />79 -120 <br />1,2- Dichloroethane -d4 (S) <br />% <br />98 <br />75 -129 <br />4- Bromofluorobenzene (S) <br />% <br />101 <br />76 -123 <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 />Pace Analytical Services, Inc. <br />9608 Loiret Blvd. <br />Lenexa, KS 66219 <br />(913)599 -5665 <br />Qualifiers <br />Page 41 of 48 <br />