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OESC I <br />Molen 6 Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite #205 <br />Thornton, CO 80223 <br />Quality Assurance Report <br />Level II <br />L541999 <br />12065 Lebanon Rd. <br />Mt. Juliet, TN 37122 <br />(615) 758 -5858 <br />1 -800- 767 -5859 <br />Fax (615) 758 -5859 <br />Tax I.D. 62- 0814289 <br />Est. 1970 <br />October 25, 2011 <br />Analyte Units Result Ref %Rec Limit RPD Limit Batch <br />1983 <br />Units MS Res Ref Res TV % Rec Limit Ref Samo Batch <br />1162 <br />Nitrate mg /l 6.21 1. 20 5 100. 80 -120 L541985 -01 WG561082 <br />082 <br />1,1,1,2- Tetrachloroethane <br />mg /l <br />0.0222 <br />0 <br />.025 <br />88.7 <br />71 <br />-130 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />1,1,2,2- Tetrachloroethane <br />mg /l <br />0.0239 <br />0 <br />.025 <br />95.4 <br />64 <br />-149 <br />L541999 <br />-01 <br />WG561137 <br />1,_1,2- Trichloroethane <br />mg /l <br />0.0 ^40 <br />0 <br />.025 <br />95.9 <br />73 <br />-128_ <br />L541999 <br />-01 <br />WG561137 <br />_ <br />1137 <br />1,1- Dichloroethene <br />mg /1 <br />0.0284 <br />0 <br />.025 <br />114. <br />32 <br />-152 <br />L541999 <br />-01 <br />WG561137 <br />1,2,3- Trichloropropane <br />mg /l <br />0.0230 <br />.025 <br />92.1 <br />74 <br />-137 <br />L541999 <br />-01 <br />WG561137 <br />_ _0 <br />igj <br />1137 <br />1,2- Dichloroethane <br />mg /l <br />0.0224 <br />0 <br />.0 ^_5 <br />89.7 <br />59 <br />-135 <br />L541999 <br />-01 <br />WG561137 <br />1,2- Dichloropropane <br />mg /1 <br />0.0'36 <br />0 <br />.025 <br />94.6 <br />68 <br />-126 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />2- Butanone (MEK) <br />mg /l <br />0.130 <br />0 <br />.125 <br />104. <br />51 <br />-149 <br />L541999 <br />-01 <br />WG561137 <br />°- Hexanone <br />mg /l <br />0.124 <br />0 <br />.L'S <br />99.2 <br />58 <br />-148 <br />L541999 <br />-01 <br />WG561137 <br />_ <br />_ <br />_ <br />_ <br />_ <br />1137 <br />Acetone <br />mg /1 <br />0.130 <br />0 <br />.125 <br />104. <br />34 <br />-146 <br />L541999 <br />-01 <br />WG561137 <br />Acrylonitrile <br />- -- <br />mg /l <br />0.135 <br />- <br />0 <br />.125 <br />108. <br />49 <br />-16' <br />L541999 <br />-01 <br />WG561137 <br />- <br />- <br />- <br />WINNOW <br />Bromochloromethane <br />mg /l <br />0.0255 <br />0 <br />.0 25 <br />102. <br />67 <br />-131 <br />L541999 <br />-01 <br />WG561137 <br />Bromodichloromethane <br />mg /l <br />0.0231 <br />0 <br />.025 <br />92.6 <br />67 <br />-13-- <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />Bromomethane <br />mg /l <br />0.0345 <br />0 <br />.0_ ^5 <br />138. <br />23 <br />-177 <br />L541999 <br />-01 <br />WG561137 <br />Carbon disulfide <br />mg /1 <br />0.0257 <br />0 <br />103_. <br />10 <br />-165 <br />L541999 <br />-01 <br />WG561137 <br />_ _ _ <br />_ <br />--.025 <br />_ <br />1137 <br />Chlorobenzene <br />mg /l <br />0.0227 <br />0 <br />.025 <br />90.7 <br />69 -126 <br />L541999 <br />-01 <br />WG561137 <br />Chlorodrbromomethane <br />mg /l <br />0.0204 <br />0 <br />.025 <br />81.4 <br />68 <br />-130 <br />L541999 <br />-01 <br />WG561137 <br />_ <br />_ <br />1137 <br />Chloroform <br />mg /l <br />0.0247 <br />0 <br />.025 <br />98.9 <br />64 <br />-130 <br />L541999 <br />-01 <br />WG561137 <br />Chloromethane <br />mg /l <br />0.0221 <br />0 <br />.025 <br />88.4 <br />27 <br />-155 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />cis -1,3- Dichloropropene <br />mg /1 <br />0.0230 <br />0 <br />.025 <br />92.1 <br />63 <br />-1 27 <br />L541999 <br />-01 <br />WG561137 <br />Dibromomethane <br />mg /l <br />0.0238 <br />0 <br />.025 <br />95.0 <br />6B <br />-131 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />Iodomethane <br />mg /l <br />0.126 <br />0 <br />.125 <br />101. <br />38 <br />-149 <br />L541999 <br />-01 <br />WG561137 <br />Methylene Chloride <br />mg /l <br />0.0259 <br />0 <br />.025 <br />103. <br />52 <br />-130 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />Tetrachloroethene <br />mg /l <br />0.0225 <br />0 <br />.025 <br />90.0 <br />56 <br />-139 <br />L541999-01 <br />WG561137 <br />Toluene <br />mg /l <br />0.0 ^_40 <br />0 <br />.025 <br />96.0 <br />61-126 <br />L541999 <br />-01 <br />WG561137 <br />1137 <br />trans -1,3- Dichloropropene <br />mg /1 <br />0.0214 <br />0 <br />.0 25 <br />85.6 <br />59 <br />-130 <br />L541999 <br />-01 <br />WG561137 <br />trans- 1,4- Dichloro -2- butene <br />mg /l <br />0.0227 <br />0 <br />.025 <br />90.8 <br />51 <br />-145 <br />L541999 -01 <br />WG561137 <br />1137 <br />Trichlorofluoromethane <br />mg /l <br />0.0226 <br />0 <br />.025 <br />90.3 <br />35 <br />-177 <br />L541999 -01 <br />WG561137 <br />Vinyl acetate <br />mg /l <br />0.132 <br />0 <br />.1 25 <br />105. <br />36 <br />-186 <br />L541999 -01 <br />WG561137 <br />1137 <br />Xylenes, Total <br />mg /l <br />0.0681 <br />0 <br />.075 <br />90.7 <br />64 <br />-133 <br />L541999 -01 <br />WG561137 <br />4- Bromofluorobenzene <br />101.3 <br />82 <br />-120 <br />WG56113V <br />1137 <br />* Performance of this Analyte <br />is outside <br />of established criteria. <br />For additional information, <br />please see <br />Attachment A <br />'List <br />of Analytes <br />with QC <br />Qualifiers.' <br />Page 19 of 23 <br />