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• Table 7-7. Chemical Analyses of Groundwater <br />From Wadge Overburden. <br />f~ Seneca II Mine, Routt County, Colorado <br />1 <br />Nell No. GW-S40;0~' GW-821 GW-821 GW-821 <br />Aquifer: Wadge Overburden <br />Date of Collection 11/20/80 5/20/80 5/20/80 12/11/80 <br />Analysist Peabody Peabody U.S.G.S. Peabody <br /> FIELD PARAMETERS <br /> Temperature (oC) 8.5 12.0 12.0 9.0 <br /> Conductivity (umhos/an @ 25° C) 2000.0 2000.0 <br /> pH (units) 7,p 7,2 <br /> LABORATORY PARAMETERSI <br /> Acidity (as CaC03)2 318.0 341.0 <br /> Alkalinity (as CaC03) 394.0 347.0 320.0 341.0 <br /> Alkalinity, Bicarbonate (as CaC03) 394.0 <br /> Alkalinity, Carbonate (as CaC03) <br /> Aluminum, Total 3.1 0.2 0.020 0.3 <br /> Antimony 0.002 <br />- Arsenic 0.001 0.001 <br />~ Barium 0.2 0.2 <br /> Boron 0.269 0.550 0.400 0.434 <br /> Cadmium 0.003 0.001 <br /> Calcium 95.0 316.0 280.0 168.0 <br /> Chloride b.0 25.0 24.0 31.0 <br /> Chromium 0.03 0.05 <br /> COD <br /> Conductivity (umhos/an @ 25° C) 758.0 2460.0 2636.0 1490.0 <br /> Copper 0.02 0.02 0.011 <br /> Fluoride 0.31 0.27 0.1 0.27 <br /> Hardness, Total 440.0 1532.0 1500.0 <br /> Hardness, Non-carbonate 1200.0 <br /> Hydroxide 0.0 <br /> Iron, Total 5.27 0.09 2.500 1.93 <br /> Iron, Dissolved 0.12 0.030 0.02 <br /> Lead - 0.02 0.02 0.02 <br /> Magnesium 51.0 202.0 200.0 113.0 <br /> Manganese, Tot at 0.210 41.0 <br /> Manganese, Dissolved 0.27 0.20 0.180 0.02 <br /> Manganese, Suspended 0.030 <br /> Mercury (ug/1) 0.03 0.02 0.0 <br /> Molybdenum 0.2 0.2 0.0 <br /> Nickel 0.02 0.02 0.005 0.03 <br /> Nitrogen - Kjeldahl 1.70 <br /> Nitrogen - Ammonia 0.21 <br /> Table 7-7 continued on next page. <br />7-23 Revised 5/27/81 <br />