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*ESC 1 <br />Molen & Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite #205 <br />Thornton, CO 802 23 <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 Result Units % Rec Limit Batch Date Anal, <br />pH 5.60 su WG561202 10/19/11 09:30 <br />B:_ ^0 <br />Arsenic <br />< <br />.001 <br />mg /1 <br />WG561149 <br />10/19/11 <br />08:20 <br />Beryllium <br />< <br />.001 <br />mg /1 <br />WG561149 <br />10/19/11 <br />08:20 <br />< .5 <br />mg /1 <br />WG561228 <br />10/21/11 <br />11:41 <br />8:_20 <br />Copper <br />< <br />.002 <br />mg /l <br />WG561149 <br />10/19/11 <br />08:20 <br />Lead <br />< <br />.001 <br />mg /l <br />WG561149 <br />10/19/11 <br />08:20 <br />< .1 <br />mg /l <br />WG561228 <br />10 / 21 /11 <br />11:41 <br />8:20 <br />Thallium <br />< <br />.001 <br />mg /1 <br />WG561149 <br />10/19/11 <br />08: 20 <br />Zinc <br />< <br />.01 <br />mg /1 <br />WG561149 <br />10/19/11 <br />08:20 <br />pH 5.60 su WG561202 10/19/11 09:30 <br />For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' <br />Page 14 of 23 <br />7:28 <br />Specific Conductance <br />< 1.8 <br />umhos /cm <br />WG561585 <br />10/21/11 <br />10:48 <br />Barium <br />< .005 <br />mg /1 <br />WG561228 <br />10/21/11 <br />11:41 <br />Calcium <br />< .5 <br />mg /1 <br />WG561228 <br />10/21/11 <br />11:41 <br />1:41 <br />Cobalt <br />< .01 <br />mg /l <br />_ <br />WG561228 <br />10/21/11 <br />11:41 <br />Magnesium <br />< .1 <br />mg /l <br />WG561228 <br />10 / 21 /11 <br />11:41 <br />1:41 <br />Potassium <br />< .5 <br />mg /1 <br />WG561228 <br />10/21/11 <br />11:41 <br />Silver <br />< .01 <br />mg /l <br />WG561228 <br />10/21/11 <br />11:41 <br />1:41 <br />vanadium <br />< .01 <br />mg /1 <br />WG561228 <br />10/_ ^1 /11 <br />11:41 <br />8:29 <br />Sulfate <br />< 5 <br />mg /1 <br />_ <br />WG561691 <br />10/ 21/11 <br />08:29 <br />8:3' <br />Arsenic <br />< .001 <br />mg /l <br />WG561493 <br />10/21/11 <br />08:32 <br />Beryllium <br />< .001 <br />mg /1 <br />WG561493 <br />10/21/11 <br />08:32 <br />8:32 <br />Copper <br />< .002 <br />mg /l <br />WG561493 <br />10/21/11 <br />06:32 <br />Lead <br />< .001 <br />mg /l <br />WG561493 <br />10/21/11 <br />08:32 <br />8:32 <br />Thallium <br />< .001 <br />mg /l <br />WG561493 <br />10/21/11 <br />08:32 <br />Zinc <br />< .01 <br />mg /1 <br />WG561493 <br />10/21/11 <br />15:37 <br />TOC (Total Organic Carbon) <br />< 1 <br />mg /l <br />WG561983 <br />10/24/11 <br />12 :00 <br />Analyte <br />Units <br />Result <br />Duplicate RPD Limit <br />Ref Samp <br />Batch <br />1162 <br />Alkalinity <br />mg /l <br />260. <br />260. 0 20 <br />L541991 -04 <br />WG561162 <br />1082 <br />Nitrate <br />mg /l <br />0.160 <br />0.160 1.89 20 <br />L541991 -06 <br />WG561082 <br />. Performance of this Analyte is <br />outside of <br />established <br />criteria. <br />For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' <br />Page 14 of 23 <br />