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OESC I <br />Molen & Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite #205 <br />Thornton, CO 80223 <br />Quality Assurance Report <br />Level II <br />L571648 <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 />May 02, 2012 <br />Analyte <br />Units Result Duplicate RED <br />Limit <br />Ref Samp <br />Batch <br />9816 <br />Arsenic <br />9687 <br />Alkalinity <br />mg /l 0 0 0 <br />20 <br />L571671 -09 <br />WG589687 <br />_ <br />WG589B16 <br />Beryllium <br />mg /l <br />0 <br />9846 <br />TOC (Total Organic Carbon) <br />mg /l 2.60 2.40 6.45 <br />20 <br />L571796 -01 <br />WG589846 <br />98 ^_5 <br />Specific Conductance <br />umhos /cm 280000 280000 1.80 <br />20 <br />L571909 -02 <br />WG589825 <br />9790 <br />pH su 6.30 6.30 0.477 1 L571959 -01 WG589790 <br />Analyte Units Known Val Result o Rec Limit Batch <br />9816 <br />Arsenic <br />mg /l <br />0 <br />0 <br />0 <br />_ °0 <br />L571872-06 <br />_ <br />WG589B16 <br />Beryllium <br />mg /l <br />0 <br />0 <br />0 <br />_ ^0 <br />L571872 -06 <br />WG589816 <br />9 816 <br />Copper <br />mg /l <br />0 <br />0.000450 <br />NA <br />20 <br />1,571872-06 <br />WG589816 <br />Lead <br />mg /l <br />0 <br />0 <br />0 <br />20 <br />L571872 -06 <br />WG589816 <br />9816 <br />Thallium <br />mg /l <br />0 <br />0 <br />0 <br />20 <br />L57IS72-06 <br />WG589816 <br />Zinc <br />mg /1 <br />0 <br />0.00330 <br />NA <br />^0 <br />L571872 -06 <br />WG589816 <br />Barium <br />mg /1 <br />0.170 <br />0.160 <br />4.88 <br />L571750 -08 <br />WG589680 <br />Calcium <br />mg /1 <br />200. <br />198. <br />1.50 <br />20 <br />L571750 -08 <br />WG589680 <br />2- Butanone (MEK) <br />mg /l <br />.1 25 <br />0.117 <br />93.5 <br />58 -144 <br />9680 <br />_ <br />Cobalt <br />mg /l <br />0 <br />0 <br />0 <br />20 <br />L571750 -08 <br />wG589680 <br />Magnesium <br />- <br />mg /l <br />- - - - <br />52.0 <br />- <br />52.3 <br />-- <br />0.768 <br />- <br />20 <br />- -- <br />L571750 -08 <br />-- <br />WG589680 <br />-- <br />Acetone <br />mg /l <br />.125 <br />- <br />113. <br />--- <br />9680 <br />Potassium <br />mg /l <br />10.0 <br />10.2 <br />2.90 <br />20 <br />L571750 -08 <br />WG589680 <br />Silver <br />mg /l <br />0 <br />0 <br />0 <br />20 <br />L571750 -08 <br />WG589680 <br />* Performance of <br />this Analyte <br />is outside <br />of established criteria. <br />9680 <br />Vanadium <br />mq /1 <br />0 <br />0 <br />0 <br />20 <br />L571750 -08 <br />WG5896R0 <br />Analyte Units Known Val Result o Rec Limit Batch <br />Page 15 of 23 <br />9579 <br />1,1,1 - Trichloroethane <br />mg /l <br />.025 <br />0.0206 <br />82.3 <br />71 -1 ^_6 <br />WG589579 <br />1,1,2,^_- Tetrachloroethane <br />mg /l <br />.025 <br />0.0195 <br />78.1 <br />78 -130 <br />WG589579 <br />9579 <br />1,1- Dichloroethane <br />mg /l <br />.025 <br />0.0313 <br />85.2 <br />73 -123 <br />WG589579 <br />1,1- Dichloroethene <br />mg /l <br />.025 <br />0.0211 <br />84.3 <br />54 -134 <br />WG589579 <br />9579 <br />1,2- Dichlorobenzene <br />mg /l <br />.025 <br />0.0210 <br />84.1 <br />82 -121 <br />WG589579 <br />1, ^_- Dichloroethane <br />mg /l <br />.0 ^5 <br />0.0208 <br />83.1 <br />69 -128 <br />WG589579 <br />9579 <br />1,4- Dichlorobenzene <br />mg /l <br />.025 <br />0.0209 <br />83.4 <br />79 -117 <br />WG589579 <br />2- Butanone (MEK) <br />mg /l <br />.1 25 <br />0.117 <br />93.5 <br />58 -144 <br />WG589579 <br />9 57 9 <br />4- Methyl -2- pentanone <br />(MIBK) <br />mg /l <br />.125 <br />0.102 <br />81.4 <br />58 -147 <br />WG589579 <br />Acetone <br />mg /l <br />.125 <br />0.141 <br />113. <br />49 -153 <br />WG589579 <br />9579 <br />Benzene <br />mg /l <br />.025 <br />0.0 112 <br />84.9 <br />72 -119 <br />WG589579 <br />* Performance of <br />this Analyte <br />is outside <br />of established criteria. <br />For additional <br />information, <br />please see <br />Attachment A 'List <br />of Analytes with <br />QC Qualifiers.' <br />Page 15 of 23 <br />