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rr rr ¦r rr rr rr r¦? r ?r ?r r? r r r r rr rr ?r <br />Table 2 <br />April 2009 Field and Analytical Results <br />Holcim (US) Inc. <br />Florence, Colorado <br />Anal a <br />Field Parameters <br />Screening Levels Aril 2009 Ana tical Results <br />MW-7 MW-12 MW-12 DUP MW-13 <br />(std. units) 6.5-8.5` 9.21 7.63 NA 7.99 <br />Conductivity (mS/cm) NA 1.109 3.231 NA 2.900 <br />Temperature °C) NA 17.3 20.9 NA 14.3 <br />Laborato Results <br />Alkalinity NA 581 331 335 379 <br />Chloride 250` 42 36 35 29 <br />Fluoride 2.0° 1.1 3.6 3.6 0.8 <br />Hardness, as CaCO, NA 148 2620 2580 2140 <br />Nitrate as N 10.0 0.05 B 0.05 B 0.02 U 0.08 B <br />Nitrogen, ammonia NA 1.23 0.27 B 0.27 B 0.28 B <br />Total dissolved solids 3918'/ 1.25 x bk ' 720 3990 4040 3660 <br />Sulfate 20808/250' 35 2300 2300 2000 <br />Aluminum total 5.0 9.26 23.1 10.6 7.36 <br />Arsenic (total) 0.01 0.0027 0.006 0.005 B 0.005 <br />Calcium (dissolved) NA 24.2 488 483 492 <br />Calcium (total) NA 46.1 525 511 539 <br />Iron 4.5' / 0.3` 0.02 U 0.08 0.09 0.04 B <br />Magnesium (dissolved) NA 21.4 341 334 222 <br />Magnesium (total) NA 26.5 726 347 225 <br />Manganese total 0.88' / 0.05` 0.105 0.673 0.63 0.13 <br />Potassium (total) 17' / NA 7.2 20.3 17.2 11.9 <br />Selenium total 0.02 <br />- 0.0008 0.0027 0.0016 B 0.139 <br />Sodium (total) 72 <br />6r/ NA 236 156 163 249 <br />AN units are in mg/L urge" noted otherwise. <br />Bolded vatwa - Screening level exceeded. <br />8 - Analyte concentrabon detected at a value between Method Detection Limit and Pratical Quantdaton L" <br />bkg - Background. <br />MCL - Maximum concentration WM. <br />NA - Not available <br />U - The analyte was analyzed for, but not detected. Detection limit is numeric value shown. <br />Multiple screening levels present in some instances due to proposed background standardsfor MW-7. <br />'DRMS-approved compliance standards for MW-7 <br />°MCL source: Table 1 Human Health Standards. Regulation 41. <br />`MCL source Table 2 Secondary Dnintking Water Standards, Regulation 41. <br />'MCL source: Table 3 Agncu tural Standards for Groundwater, Regulation 41. <br />'MCL source: Table 4 TDS Water Quality Standards. Regulation 41. <br />C:\Documents and Settings\stobgyWy Documents\Holcim\Tables 1&2.xisx Page 1 of 1