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<br /> <br /> <br />Table 7-9, Chemical Analysis of Groundwater <br />From Wolf Creek Coal Overburden <br />Seneca Mtne, Routt County, Colorado <br />J <br />N <br /> <br />00 <br />r <br />Nell No. GN-S8 GN-S8 GN-S8 GN-S8 GM-S8-P1 GN-511 GN-S11 <br />Aquifer: Nolf Creek Overburden (Sandstone and Shale) <br />Date of Collection 6/16/79 B/11 /79 8/11/79 5/21/80 12/3/80 6/16/79 11/9/79 <br />Analysist USGS Peabody USGS Peabody Peabody USGS Peabody <br />FIELD PARAMETERS <br />Temperature (oC) 17.0 9.2 9.2 11.0 10.5 23.0 7.0 <br />Conductivity (umhos/cm @ 25o C) 925.0 930.0 1075.0 1050.0 <br />pH (units) 8.2 8,1 8.1 8.3 8.0 8.1 <br />LAOORATORY PARANETERSI <br />Acidity (as CaC03)2 -558.0 -572.0 -635.0 <br />Alkalinity (as CaC03) 250.0 580.0 560.0 594.0 451.0 310.0 662.0 <br />Alkalinity, Bicarbonate (as CaC03) 580.0 594.0 451.0 645.0 <br />Alkalinity, Carbonate (a s CaC03) 17,0 <br />Aluminum, Total 0.000 0.4 0.020 0.3 0,3 0.000 0.5 <br />Antimony <0.002 <br />Arsenic 0.000 <0.001 0.001 <0.001 0.001 <0,001 <br />Barium <0.2 <br />Boron 0.090 0.008 0.080 0.244 0.208 0.160 0.094 <br />Cadmium 0.001 <0.001 m,002 0.001 <br />Calcium 6.7 3.0 2.6 3.0 12.0 6.5 3.0 <br />Chloride 8.0 6.5 6.0 6.0 2.0 <br />Chromium 0.04 x.02 m,04 0.04 <br />COD 10.2 5.3 <br />Conductivity (umhos/cm @ 25° C) 1037,0 1031.0 1000.0 738.0 1167.0 <br />Copper 0.000 m.06 0.000 <0.02 0.03 0.000 <0.06 <br />Fluoride 3.3 4.10 3.9 3.8 2.60 2.2 2.50 <br />Hardness, Total 20.0 10.0 9.0 10.0 32.0 20.0 10.0 <br />Hardness, Non-carbonate 20.0 0.0 20.0 <br />Hydroxide <br />Iron, Total " 0.09 0.570 0.08 5.21 0.03 <br />Table 7-9 continued on next page. <br />