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ace Analytical • www.pacelab&com <br />• <br />• <br />Project: LUPTON LAKES DMG <br />• Pace Project No.: 6039464 <br />QUALITY CONTROL DATA <br />Pace Analytical Services, Inc. <br />9608 Loiret Blvd. <br />Lenexa, KS 66219 <br />(913)599-5665 <br />• QC Batch: GCV/2530 Analysis Method: EPA 8021 <br />• QC Batch Method: EPA 8021 Analysis Description: 8021 GCV BTEX Only <br />Associated Lab Samples: 6039464001, 6039464002, 6039464003, 6039464004, 6039464005 <br />• <br /> METHOD BLANK: 321826 <br /> Associated Lab Samples: 6039464001, 6039464002, 6039464003, 6039464004, 6039464005 <br />• Blank Reporting <br /> Parameter Units Result Limit Qualifiers <br /> <br />• <br /> Benzene ug/L ND 2.0 <br />• Ethylbenzene ug/L ND 2.0 <br /> Methyl-tert-butyl ether ug/L ND 10.0 <br /> Toluene ug/L ND 2.0 <br />• Xylene (Total) ug/L ND 5.0 <br /> a,a,a-Trifluorotoluene (S) % 101 85-121 <br />0 <br /> <br />• LABORATORY CONTROL SAMPLE: <br /> <br />Parameter 321827 <br /> <br />Units <br />Spike <br />Conc. <br />LCS <br />Result <br />LCS <br />% Rec <br />% Rec <br />Limits Qualifiers <br /> Benzene ug/L 20 18.5 92 79-119 <br />• Ethylbenzene ug/L 20 19.9 99 83-122 <br /> Methyl-tert-butyl ether ug/L 20 19.9 99 77-126 <br />• Toluene ug/L 20 19.1 95 82-121 <br />• Xylene (Total) ug/L 60 61.1 102 87-115 <br /> a,a,a-Trifluorotoluene (S) % 98 85-121 <br />0 <br />• MATRIX SPIKE & MATRIX SPIKE DUPLICATE: 321828 <br />0 <br />• Parameter <br />• Benzene <br /> Ethylbenzene <br />• Methyl-tert-butyl ether <br /> Toluene <br />• Xylene (Total) <br />• a,a,a-Trifluorotoluene (S) <br /> <br /> <br /> <br /> <br /> <br />0 <br />0 <br />• <br /> Date: 05/14/2008 11:32 AM <br /> <br />• <br />• <br />0 <br />321829 <br /> MS MSD <br /> 6039464001 Spike Spike MS MSD MS MSD % Rec Max <br />Units Result Conc. Conc. Result Result % Rec % Rec Limits RPD RPD Qual <br />ug/L ND 20 20 16.8 16.8 84 84 51-131 0 20 <br />ug/L ND 20 20 18.8 18.4 94 92 60-133 2 20 <br />ug/L ND 20 20 18.7 18.7 93 93 48-153 0 23 <br />ug/L ND 20 20 17.6 17.3 85 83 65-125 2 17 <br />ug/L ND 60 60 58.2 57.0 95 93 70-124 2 20 <br />% 95 98 85-121 <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 />i.l._LGIIGLS. <br />Page 10 of 12