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DRMS CEMEX M1977-208 Quarterly Report Y1OQ1 <br />5/7/2010 <br />Page 3/3 <br />Table 1 <br />Summary of Analytical Results <br /> Feb-09 Jun-09 Sep-09 Nov-09 Mar-10 <br /> <br />Parameter <br />Units <br />Standards <br />C-Pit I CEM <br />001 CEM <br />004 <br />C-Pit GEM <br />001 GEM <br />004 <br />C-Pit CEM <br />001 CEM <br />004 <br />C-Pit ' GEM <br />001 GEM' <br />004 <br />C-Pit CEM <br />004 <br />pH su 8.9 8.2 7.9 7.4 8.3 7.8 8.3 6.3 7.7 7.8 7.9 7.8 7.7 7.8 8.0 <br />Chloride mg/L 1600 2000 12 1700 2300 5.3 1700 2200 8.8 1700 ` 2000 2.4 1100 8.3 <br />Sulfate mg/L 3100 BDL 84 3900 BDL 13 400 BDL 26 4100 BDL 10 3200 19 <br /> <br />Dissolved Solids <br />mg/L 1.25 <br />xBkg <br />7500 <br />4400 <br />330 <br />9000 <br />5000 <br />130 <br />9800 <br />5200 <br />190 <br />8800 - <br />4300 <br />170 <br />6500 <br />110 <br />Selenium, <br />dissolved (ICP- <br />DRC-MS) <br /> <br />mg/L <br />.02 A/ <br />.05 DW <br /> <br />0.13 <br /> <br />BDL <br /> <br />BDL <br /> <br />0.15 <br /> <br />0.02 <br /> <br />BDL <br /> <br />0.03 <br /> <br />0.12 <br /> <br />BDL <br /> <br />0.031 <br /> <br />0.023 <br /> <br />BDL <br /> <br />0.040 <br /> <br />0.0013 <br />Thallium, <br />dissolved <br />mg/L <br />0.002 <br />0.0013 <br />BDL <br />BDL <br />0.0015 <br />BDL <br />BDL <br />0.0028 <br />BDL <br />BDL _ <br />0.0023 <br />BDL ?- <br />BDL <br />0.0050 <br />BDL <br />ICP-DRC-MS - Inductively-Coupled Plasma Dynamic Reaction Cell Mass Spectrometry <br />su - standard units <br />mg/I - milli6grams per liter <br />United States Operations <br />P 0 Box 529, Lyons, CO 80540, USA, Phone (303) 823-2100, Fax (303) 823-2199