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*ESC I <br />Molen s Associates, LLC <br />Mark Molen <br />2090 East 104th Avenue Suite #205 <br />Thornton, CO 80223 <br />Quality Assurance Report <br />Level II <br />L571643 <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 <br />MSD <br />Ref <br />%Rec <br />Limit <br />RPD <br />Limit <br />Ref Samp <br />Batch <br />Mercury <br />mg /l <br />0.00270 <br />0.00262 <br />90.0 <br />70 -130 <br />3.01 <br />20 <br />L571637 -01 <br />9579 <br />- <br />9687 <br />Trichlorofluoromethane <br />mg /1 <br />0.0262 <br />0.0259 <br />105. <br />35 -177 <br />1.17 <br />23 <br />L571637 -01 <br />WG589579 <br />Vinyl acetate <br />mg /l <br />0.121 <br />0.117 <br />96.7 <br />36 -186 <br />3.06 <br />20 <br />L571637 -01 <br />WG589579 <br />Arsenic <br />mg /l <br />0.0572 <br />0.0570 <br />101. <br />75 -125 <br />0.350 <br />20 <br />L571872-06 <br />WG589816 <br />- - - <br />- - - <br />- <br />- - -- <br />- � - <br />- - <br />9579 <br />Xylenes, Total <br />mg /l <br />0.0720 <br />0.0712 <br />96.0 <br />64 -133 <br />1.21 <br />20 <br />L571637 -01 <br />WG589579 <br />4- Bromofluorobenzene <br />mg /l <br />0.0573 <br />0.0572 <br />95.08 <br />82 -120 <br />0.175 <br />-- -- <br />20 <br />- - <br />L571872-06 <br />- <br />WG589579 <br />., <br />- .- <br />-- <br />- <br />- .__. -� _ .. <br />9579 <br />Selenium <br />mg /l <br />0.0573 <br />0.0562 <br />100. <br />75 -125 <br />1.94 <br />20 <br />L571872 -06 <br />WG589816 <br />Toluene -d8 <br />mg /l <br />0.0560 <br />0.0556 <br />103.3 <br />97112 <br />0.717 <br />20 <br />L571872 -06 <br />WG589579 <br />a,a,a- Trifluorotoluene <br />98.83 <br />90 -116 <br />- -- -- <br />- <br />- illillillillilim <br />WG589579 <br />Nitrate mg /1 6.87 6.87 105. 80 -120 0 20 L571644 -04 WG589475 <br />9597 <br />TOC (Total Organic Carbon) <br />mg /l <br />52.5 <br />51.4 <br />105. <br />80 -1 20 <br />2.27 <br />20 <br />L571426 -02 <br />WG589539 <br />Mercury <br />mg /l <br />0.00270 <br />0.00262 <br />90.0 <br />70 -130 <br />3.01 <br />20 <br />L571637 -01 <br />WG589637 <br />- <br />9687 <br />TOC (Total Organic Carbon) <br />mg /1 <br />56.6 <br />55.9 <br />106. <br />80 -120 <br />1.25 <br />20 <br />L571671 -01 <br />WG589846 <br />Antimony <br />mg /1 <br />0.0598 <br />_ 0.0581 <br />105. <br />4- 75 -125 m. <br />.88 <br />20 <br />1,57187 - - 2-06 <br />WG589816 <br />Arsenic <br />mg /l <br />0.0572 <br />0.0570 <br />101. <br />75 -125 <br />0.350 <br />20 <br />L571872-06 <br />WG589816 <br />- - - <br />- - - <br />- <br />- - -- <br />- � - <br />- - <br />- - <br />9816 <br />Cadmium <br />m 4 /l <br />0.0580 <br />0.0568 <br />102. <br />75 -125 <br />2.09 <br />_20 <br />- - <br />L571872 -06 <br />--- -- <br />WG58981E <br />Copper <br />- - -- - <br />mg /l <br />0.0573 <br />0.0572 <br />100. <br />- - <br />75 -125 <br />-- - - - <br />0.175 <br />-- -- <br />20 <br />- - <br />L571872-06 <br />- <br />WG589816 <br />- <br />., <br />- .- <br />-- <br />- <br />- .__. -� _ .. <br />981E <br />Selenium <br />mg /l <br />0.0573 <br />0.0562 <br />100. <br />75 -125 <br />1.94 <br />20 <br />L571872 -06 <br />WG589816 <br />Thallium <br />mg /l <br />0.0560 <br />0.0556 <br />98.8 <br />75 -1 - - 25 <br />0.717 <br />20 <br />L571872 -06 <br />WG589816 <br />- <br />- <br />- -- -- <br />- <br />- illillillillilim <br />9816 <br />Barium <br />mg /l <br />1.35 <br />1.31 <br />105. <br />75 -125 <br />3.01 <br />20 <br />L571750 -08 <br />WG589680 <br />9680 <br />Chromium <br />mg /1 <br />1.19 <br />1.14 <br />105. <br />75 -1 25 <br />4.29 <br />20 <br />L571750 -08 <br />wG589680 <br />Cobalt <br />mg /1 <br />1.16 <br />1.20 <br />103. <br />75 -125 <br />3.39 <br />20 <br />L571750 -08 <br />wG589680 <br />- <br />- <br />- - <br />- <br />-- 968C <br />Nickel <br />mg /l <br />1.14 <br />_ <br />1.11 <br />101. <br />75- 125 <br />2.67 <br />20 <br />L571750 -08 <br />WG589680 <br />Potassium <br />mg /1 <br />22.2 <br />21.4 <br />106. <br />75 -125 <br />3.67 <br />20 <br />L571750 -08 <br />WG589680 <br />_ <br />9680 <br />Sodium <br />mg /l <br />29.8 <br />28.4 <br />114. <br />75 -125 <br />4.81 <br />20 <br />L571750 -08 <br />WG589680 <br />Vanadium <br />mg /l <br />1.19 <br />1.15 <br />105. <br />75 -125 <br />3.42 <br />20 <br />L571750 -08 <br />WG589680 <br />Batch number /Run number / Sample number cross reference <br />WG589579: R2142613: L571648 -01 02 03 <br />WG589475: R2143253: L571648 -01 02 03 <br />WG589597: R 2144413: L571648 -01 <br />WG589595: R2144453: L571648 -01 <br />WG589599: R2144473: L571648 -01 <br />* Performance of this Analyte is outside of established criteria. <br />For additional information, please see Attachment A 'List of Analytes with QC Qualifiers.' <br />Page 21 of 23 <br />