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Table E -3 <br />Groundwater Quality Data for Monitoring Wells MW -7 through MW -13 2008 through 2010 <br />Holcim (US) Inc. <br />Florence, CO <br />Analyte <br />Mar <br />-08 <br />MW -7 Compliance <br />Standards <br />Apr-09 <br />Jun -09 <br />Sep -09 <br />Dec -09 <br />Field Parameters <br />MCL <br />MW -7 <br />MW -8 <br />MW -9 <br />MW -11 <br />MW -12 <br />MW -12 DUP <br />MW -7 <br />MW -12 <br />MW -12 DUP <br />MW -13 <br />MW -13 <br />MW -13 <br />MW -13 <br />MW -13 <br />pH (std. units) <br />6.5 -8.5" <br />7.95 <br />6.97 <br />6.96 <br />7.11 <br />6.93 <br />NA <br />6.5 -8.5a <br />9.21 <br />7.63 <br />NA <br />7.99 <br />7.01 <br />NAI <br />6.95 <br />7.00 <br />Conductivity (mS /cm) <br />NA <br />2058 <br />3095 <br />3361 <br />32041 <br />37641 <br />NA <br />NA <br />1.1091 <br />3.2311 <br />1 <br />NA <br />2.900 <br />3.215 <br />NA <br />2.934 <br />2.7 <br />Temperature ( °C) <br />NA <br />17.63 <br />15.61 <br />17.33 <br />18.801 <br />18.721 <br />NAJ <br />NA <br />17.31 <br />20.9 <br />NA <br />14.3 <br />16.9 <br />NAI <br />13.1 <br />13.90 <br />Laboratory Results <br />Alkalinity NA 458 352 <br />239 <br />198 <br />348 <br />350 <br />NA <br />581 <br />331 <br />335 379 <br />409 <br />410 <br />-- <br />-- <br />Chloride <br />250" <br />37 <br />31 <br />33 <br />37 <br />36 <br />36 <br />NA <br />42 <br />36 <br />35'1 <br />29 <br />29 <br />30 <br />- <br />Fluoride <br />2.0c <br />0.80 <br />0.9 <br />1.1 <br />0.7 <br />3.4 <br />3.0 <br />NA <br />1.1 <br />3.6 <br />3.6 <br />0.8 <br />0.9 <br />0.9 <br />Hardness, as CaCO3 <br />NA <br />961 <br />1830 <br />21101 <br />1960 <br />2540 <br />2390 <br />NA <br />148 <br />2620 <br />2580 <br />2140' <br />2140 <br />2130 <br />Nitrate as N <br />10.08 <br />0.03 B <br />0.04 B <br />0.16' , <br />0.24, <br />0.06 <br />B <br />0.03 <br />B <br />NA <br />0.05 <br />B <br />0.05 <br />B <br />0.02 U <br />0.08'B <br />0.08 <br />B <br />0.03 <br />B <br />-- <br />- <br />Nitrogen, ammonia <br />NA <br />0.98 <br />0.75 <br />0.15 B <br />0.31 <br />B <br />0.74 <br />0.91 <br />NA <br />1.23 <br />0.27 <br />B <br />0.27,6 <br />0.28 <br />B <br /><0.05 <br />0.06 <br />B <br />Total Dissolved Solids <br />1.5 x bkg <br />1940 <br />3190 <br />3570, <br />34101 <br />4030 <br />3980 <br />3918 <br />720 <br />3990 <br />4040 <br />3660 <br />3620 <br />3590 <br />3,630 <br />3,470 <br />Sulfate <br />250' <br />850 <br />1730 <br />1840 <br />1980 <br />2300 <br />2100 <br />2080 <br />35 <br />2300 <br />2300 <br />2000 <br />1900, <br />2000 <br />1,900 <br />1,800 <br />Aluminum (total) <br />5.0' <br />5.971, <br />0.1716 <br />1.17 <br />3.11 <br />21.70 <br />26.00 <br />NA <br />9.26 <br />23.1 <br />10.6 <br />7.36 <br />9.85 <br />11.8 <br />-- <br />-- <br />Arsenic (total) <br />0.058 <br />0.0027 <br />0.0010 <br />B <br />0.001,U <br />0.0009 <br />B <br />0.0033 <br />0.005 <br />NA <br />0.0027 <br />0.006 <br />0.005 <br />B <br />0.005 <br />0.003 <br />B <br />0.004 <br />B <br />-- <br />Calcium (dissolved) <br />NA <br />202 <br />438' <br />458' <br />439, <br />451 <br />NA <br />24.2 <br />488 <br />483 <br />4921 <br />491 <br />487 <br />-- <br />- <br />Calcium (total) <br />NA <br />206 <br />444 <br />458 <br />439: <br />463 <br />NA <br />46.1 <br />525 <br />511 <br />539 <br />524 <br />523 <br />- <br />Iron <br />0.3' <br />4.18 <br />0.54 <br />1.85 <br />3.17 <br />14.40 <br />20.90 <br />4.5 <br />0.02 <br />U <br />0.08 <br />0.09 <br />0.04 <br />B <br />0.07 <br />0.22 <br /><0.02 <br /><0.02 <br />Magnesium (dissolved) <br />NA <br />111 <br />178 <br />235 <br />209 <br />329 <br />308 <br />NA <br />21.4 <br />341 <br />3341 <br />222 <br />221 <br />223 <br />-- <br />-- <br />Magnesium (total) <br />NA <br />112 <br />180 <br />232' <br />208 <br />323 <br />312 <br />NA <br />26.5 <br />726 <br />347 <br />225 <br />195 <br />197 <br />-- <br />-- <br />Manganese (total) <br />0.05 <br />0.085 <br />0.196 <br />0.317 <br />0.3241 <br />0.623 <br />0.679 <br />0.88 <br />0,1051 <br />0.673 <br />1 0.63 <br />0.13 <br />0.261 <br />0.24 <br />0.113 <br />0.056 <br />Potassium (total) <br />NA <br />10.4 <br />10.9 <br />9.3 <br />13.0 <br />18.8 <br />19.7 <br />17 <br />7.2 <br />20.3 <br />17.2 <br />11.9 <br />11.8 <br />12.4 <br />10.3 <br />11.0 <br />Selenium (total) <br />0.02` <br />0.00051 <br />0.00071 <br />0.0005 <br />B <br />0.0030 <br />0.0023 <br />0.0033 <br />0.02(' <br />0.0008 <br />0.0027 <br />0.0016 B <br />0.139', <br />0.03351 <br />0.0406 <br />-- <br />-- <br />Sodium (total) <br />NA <br />226 <br />207 <br />199 <br />209 <br />221 <br />244 <br />226 <br />236 <br />156 <br />163 <br />249 <br />193 <br />198 <br />225 <br />199 <br />Notes: <br />All units are in mg /L unless noted otherwise. <br />Bolded values - Screening level exceeded. <br />B - Analyte concentration detected at a value between Method Detection Limit and Pratical Quantitation Limit. <br />bkg - Background. <br />MCL - Maximum concentration limit. <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 />aDRMS- approved compliance standards for MW -7. <br />'MCL source: Table 1 Human Health Standards, Regulation 41. <br />`MCL source: Table 2 Secondary Drinking Water Standards, Regulation 41. <br />°MCL source: Table 3 Agricultural Standards for Groundwater, Regulation 41. <br />'MCL source: Table 4 TDS Water Quality Standards, Regulation 41. <br />