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OESC <br />Molen S Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite 4205 <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 <br />Units <br />Known Val <br />Result <br />Rec <br />Limit <br />Batch <br />Calcium <br />mg /1 <br />11.3 <br />11.6 <br />103. <br />85 -115 <br />1149 <br />Lead <br />mg /l <br />.0567 <br />0.0538 <br />94.9 <br />85 -115 <br />WG561149 <br />Selenium <br />mg /l <br />.0567 <br />0.0512 <br />90.3 <br />85 -115 <br />WG561149 <br />Magnesium <br />mg /l <br />11.3 <br />11.6 <br />103. <br />85 -115 <br />1149 <br />Zinc <br />mg /l <br />.0567 <br />0.0580 <br />102. <br />85 -115 <br />WG561149 <br />1202 <br />Mercury mg /l .003 0.00286 95.3 85 -115 WG561244 <br />Specific Conductance umhos /cm 427 4 27. 100. 85 -115 WG561585 <br />1218 <br />Chloride mg /1 40 39.5 001101"M 98.8 90 -110 WG561691 <br />1691 <br />Antimony <br />- <br />mg /l <br />- - <br />.0567 <br />-- <br />0.0629 <br />- <br />111. <br />- - <br />85 <br />- - -- <br />1228 <br />Calcium <br />mg /1 <br />11.3 <br />11.6 <br />103. <br />85 -115 <br />WG561228 <br />Chromium <br />mg /1 <br />1.13 <br />1.20 <br />106. <br />85 -115 <br />WG561228 <br />85 <br />-115 <br />WG561493 <br />Cadmium <br />mg /l <br />.0567 <br />1228 <br />Magnesium <br />mg /l <br />11.3 <br />11.6 <br />103. <br />85 -115 <br />WG561 2_'8 <br />Nickel <br />mg /1 <br />1.13 <br />1.06 <br />93.8 <br />85 -115 <br />WG561228 <br />.0567 <br />0.0625 <br />110. <br />85 <br />_ <br />WG561493 <br />1^_ ^_8 <br />Silver <br />mg /1 <br />_ <br />1.13 <br />1.13 <br />100. <br />85 -115 <br />WG561226 <br />Sodium <br />mg /l <br />11.3 <br />10.6 <br />93.8 <br />85 -115 <br />WG561228 <br />1218 <br />Chloride mg /1 40 39.5 001101"M 98.8 90 -110 WG561691 <br />1691 <br />Antimony <br />- <br />mg /l <br />- - <br />.0567 <br />-- <br />0.0629 <br />- <br />111. <br />- - <br />85 <br />- - -- <br />-115 <br />WG561493 <br />WG561082 <br />1 11 <br />- 1493 <br />Beryllium <br />mg /l <br />.C567 <br />0.0618 <br />109. <br />85 <br />-115 <br />WG561493 <br />Cadmium <br />mg /l <br />.0567 <br />0.0627 <br />111. <br />85 <br />-115 <br />WG561493 <br />- <br />- <br />20 <br />WG561082 <br />1,1,1,2- Tetrachloroethane <br />mg /l <br />-- 1493 <br />Lead <br />mg /l <br />.0567 <br />0.0625 <br />110. <br />85 <br />-115 <br />WG561493 <br />Selenium <br />mg /l <br />.0567 <br />0.0599 <br />106. <br />85 -115 <br />Performance of this Analyte <br />WG561493 <br />of established criteria. <br />- <br />--j10jW <br />1493 <br />Zinc <br />mg /1 <br />.0567 <br />0.0525 <br />9 2.6 <br />85 -115 <br />WG561493 <br />1983 <br />Analyte Units Result Ref %Rec Limit RPD Limit Batch <br />1162 <br />Chloride <br />mg /1 <br />39.8 <br />39.8 <br />100. <br />90 -110 <br />0 <br />20 <br />WG561082 <br />1082 <br />Nitrite <br />mg /l <br />7.97 <br />7.89 <br />100. <br />90 -110 <br />1.01 <br />20 <br />WG561082 <br />Sulfate <br />mg /l <br />39.7 <br />39.6 <br />99.0 <br />90 -110 <br />0.252 <br />20 <br />WG561082 <br />1,1,1,2- Tetrachloroethane <br />mg /l <br />0.0265 <br />0.0229 <br />106. <br />77 -128 <br />14.3 <br />20 <br />WG561137 <br />1,1,1 - Trichloroethane <br />mg /1 <br />0.0273 <br />0.0240 <br />109. <br />71 -1 26 <br />12.9 <br />20 <br />WG561137 <br />Performance of this Analyte <br />is outside <br />of established criteria. <br />For additional information, <br />please see <br />Attachment <br />A 'List of <br />Analytes <br />with QC Qualifiers.' <br />Page 17 of 23 <br />