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Table 1. Results of First Half, 2009, Groundwater Monitoring, GCC Rio Grande, Inc., Pueblo Cement Plant, Pueblo, Colorado. <br />Sampling conducted May 12, 2009. <br />Anal to Method Units MW-002 MW-003 MW-004 Du -01 EB-01 <br />GENERAL CHEMISTRY <br />Total Alkalini SM2320B tn/L 296 289 416 289 <0.50 <br />Bicarbonate SM2320B m /L 296 289 416 289 <0.50 <br />Carbonate SM2320B m /L <5.0 <5.0 <5.0 <5.0 <0.50 <br />Chloride E300.0 m /L 32.5 18.2 41.5 31.8 <0.50 <br />Fluoride SM4500F-C m /L 0.60 1.2 0.85 0.67 <0.20 <br />Sulfate E300.0 m /L 775 678 1,460 764 <0.50 <br /> <br />Ammonia as SM4500-NH3 m /L 0.14 <0.10 <0.10 0.20 NA <br />Nitrite as E300.0 /L. <0.12 <0.12 <0.12 <0.12 <0.061 <br />Nitrate as N E300.0 tn/L <0.09 <0.09 5.0 <0.09 <0.045 <br /> NA <br />Total Cations Calculated Me /L 22.35 17.51 37.45 20.16 NA <br />Total Anions Calculated Me /L 22.97 20.41 40.24 22.58 NA <br />Cation-Anion Balance Calculated % Diff 1.36 7.63 3.59 5.67 NA <br /> NA <br /> <br />Total Hardness <br />Calculated mg/L as <br />CaCO3 830 690 1,300 750 NA <br />Total dissolved solids SM 2540C m /L 1,420 1,220 2,630 1,390 NA <br />2 of 3