2014-07-11_HYDROLOGY - M1977344 - Laserfiche WebLink

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Table E-3 Groundwater Quality Data for Monitoring Wells MW-7 through MW-13 2008 through 2010 Holcim (US) Inc. Florence, CO Analyte Mar-08 MW-7 Compliance Apr-09 Jun-09 Sep-09 Dec-09 Mar-10 Field Parameters MCL MW-7 MW-8 MW-9 MW-11 MW-12 MW-12 DUP Standards MW-7 MW-12 MW-12 DUP MW-13 MW-13 MW-13 DUP MW-13 MW-13 MW-7 MW-12 MW-12 DUP MW-13 pH(std. units) 6.5-8.5 7.95' 6.97 6.96 7.11 6.93 NA' 6.5-8.50 9.21 7.63 NA 7.99 7.01 NA 6.95 7.00 8.41 7.12 - 7.24 Conductivity(mS/cm) NA 2058 3095 3361 3204 3764 NA NA 1.109 3.231 NA 2.900i 3.2151 NA 2.934 2.7 1.309' 3.974 -- 3.300 Temperature(°C) NA 17.63' 15.61' 17.33, 18.80 18.72 NA NA 17.3 20.9 NA 14.3' 16.9 NA 13.1 13.90 16.41, 15.81 - 13.2 Laboratory Results Alkalinity NA 458 352 239 198, 348 350 NA 581' 331 335 379 409 410' -- - -- Chloride 250 37 311 33 37, 36� 36 NA 42 36 35 29 1 291 30 - -- Fluoride 2.0° 0.801 0.91 1.1 0.7 3.4' 3.0 NA 1.1! 3.6 3.6 0.8 0.9 0.9 - -- Hardness,as CaCO3 NA 961 1830 2110 1960 2540 2390 NA 148' 2620 2580 2140 2140'' 2130; -- -- -- -- Nitrate as N 10.Oa 0.03 B 0.04 B 0.16 0.24 0.06 B 0.03 B NA 0.05 B 0.05 B 0.02 U 0.08 B 0.08'B 0.03'B - -- -Nitrogen,ammonia NA 0.98 0.75! 0.15 B 0.31 B 0.74 0.91 NA 1.23 0.27 B 0.271B 0.28 B <0.05 0.06 1 B - - - -- -- -- Total Dissolved Solids 1.5 x bkg 1940 3190 3570 3410 4030 3980 3918 720 3990 4040 3660 36201 35901 3,630 3,470 720 3960 3340 3300 Sulfate 250 850 1730 1840 1980 2300I 2100 2080 35 2300, 2300 2000 1900 2000i 1,900 1,800 4 B 2400 2000 2000 Aluminum(total) 5.Oc 5.97 0.17 B 1.17 3.11 21.701 26.00 NA 9.26! 23.1' 10.6 7.36 9.85 11.8i - Arsenic(total) 0.055 0.0027 0.0010!B 0.001 U 0.0009�B 0.0033 i 0.005 NA 0.0027' 0.006 0.005 B 0.005 0.003,B 0.004I B - -- - -- -- - Calcium(dissolved) NA 202 438 458 439 477 451 NA 24.2 488 483 492 491!, 487 - -- - -- -- - Calcium(total) NA 206' 444 458 439 474 4631 NA 46.1 525 511 539 524 523 - -- -- -- -- Iron 0.3 4.18 0.54' 1.85 3.17 14.40 20.90', 4.5 0.02 U 0.08 0.09 0.04,B 0.07 0.22 <0.02 <0.02 0.78 0.25 0.11 0.11 Magnesium(dissolved) NA 111 178 235 209 329 308 NA 21.4 341 334 222 221 223 - -- -- -- -- -- Magnesium(total) NA 1121 180 2321208 323 312 NA 26.5 726 347 225j 195 197 Manganese(total) 0.05 0.085 0.196 0.317 0.324I, 0.623', 0.679' 0.88 0.105 0.673 0.631 0.13 0.26 0.24 0.113 0.056 0.019 B 0.586 0.013 1 B 0.018'B Potassium(total) NA 10.4 10.9 9.3 13.0 18.8 19.7 17 7.2 20.3 17.2 11.9' 11.8 12.4' 10.3 11.0 5.6 13.5 9.4 9.3 11 Selenium(total) 0.02° 0.0005 0.0007 0.00051 B 0.0030 0.0023 0.0033 0.02 0.0008 0.00271 0.0016 B 0.139 0.0335I, 0.0406 -- __ _- Sodium(total) NA 226', 207' 199 F 2091 221 244 1 226 236 1561 163 2491, 193 198 225 199 228 186 168 164 Notes: All units are in mg/L unless noted otherwise. Bolded values-Screening level exceeded. B-Analyte concentration detected at a value between Method Detection Limit and Pratical Quantitation Limit. bkg-Background. MCL-Maximum concentration limit. NA-Not available. U-The analyte was analyzed for,but not detected.Detection limit is numeric value shown. Multiple screening levels present in some instances due to proposed background standardsfor MW-7. aDRMS-approved compliance standards for MW-7. bMCL source:Table 1 Human Health Standards,Regulation 41. `MCL source:Table 2 Secondary Drinking Water Standards,Regulation 41. dMCL source:Table 3 Agricultural Standards for Groundwater,Regulation 41. eMCL source:Table 4 TDS Water Quality Standards,Regulation 41.