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Table 2 <br /> March 2014 Field and Analytical Results <br /> Holcim(US)Inc. <br /> Florence, Colorado <br /> Analyte MW-7 March 2014 Anal tical Results MW-13 <br /> Field Parameters Units NPLs MW-7 MW-12 MW-12 DUP MW-13 NPLs <br /> pH std. units 6.5-8.58 7.55 6.74 7.02 NA <br /> Specific Conductivity mS/cm NA 2.792 3 946 3.673 NA <br /> Temperature °C NA 14.0 13.60 -- 14.00 NA <br /> Laboratory Results <br /> Total dissolved solids mg/L 3918 2620 3940 3890 3420 4026 <br /> Sulfate mg/L 2080 1460 2450 2410 1980 2200 <br /> Iron(total) mg/L NA 3.45 NA NA NA NA <br /> Iron(dissolved) m /L 4.5 0.04 B 1.14 1.20 U 0.13 <br /> Manganese(dissolved) m /L 0.88 0.059 0.532 0.549 U 0.3 <br /> Potassium(dissolved) m /L 17 12.1 12.5 13 8.2 13 <br /> Sodium(dissolved) mg/L 226 253 147 152 181 274 <br /> Notes: <br /> NPLs-numeric protection levels issued by Division of Reclamation,Mining and Safety <br /> Bolded values-Screening level exceeded <br /> U-The material was analyzed for,but was not detected above the level of the associated value. <br /> The associated value is either the sample quantitation limit or the sample detection limit. <br /> B-Analyte concentration detected at a value between Method Detection Limit and Practical Quantitation Limit.The associated value is an estimated quantity. <br /> NA-Not available. <br /> aMCL source:Table 2 Secondary Drinking Water Standards,Regulation 41. <br /> MCL-Maximum concentration limit. <br /> C:\Users\lyusko\Documents\Holcim\March 2014\Tables\Tables 123_04102014.xls Page 1 of 1 <br />