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/anrsarv ?000 Ken Coal Company " 1999 r1 nnual 1-fydrolo,Ry Repo*t ' CO Permit No. G80~006 ~ PaRe 8 <br /> <br /> <br />1 <br />C1 <br /> <br /> <br />LJ <br />1 <br /> <br /> <br />t <br />1 <br />1 <br /> <br /> <br />1 <br />TABLE 3 <br />HISTORIC MINE AREA OVERBURDEN WATER QUALITY DATA <br />SITE 79-1 <br />Parameters 1995 1996 1997 1998 1999"' <br />Tem 1°CI 7.5 8.5 8.9 9.9 9.1 <br />PH Isul 7.4 7.9 8.3 7.8 8.0 <br />E.C. ( mhos/cml @ 20° C 1050 1535 2330 1900 2020 <br />TDS 841 1145 1410 1180 1190 <br />SAR (in water) 25.31 23.35 24 28.8 <br />Calcium Idissolvedl 9.0 19.6"' 26.7 18.6 16.4 <br />Sodium Idissolvedl 297 395 496 439 459 <br />Ma nesium Idissolvedl 1.0 2.6 3.1 2.7 2.0 <br />Potassium Idissolvedl 2.0 2.1 2.3 2.0 1.8 <br />Sulfate 270 473 615 380 170 <br />Chloride 17 21 44 69 210 <br />Carbonate las CaCO31 <2 <2 <2 <2 <2 <br />Bicarbonate las CaCO31 429 407 452 512 626 <br />Fluoride 0.4 0.3 0.3 0.3 0.4 <br />Nitrate-Nitro en Idissolvedl 1.74 1.11 <0.02 0.03 <0.02 <br />Iron Idissolvedl 0.07"' 0.07 0.25 0.10 0.06 <br />Man anese Idissolvedl <0.01"' 0.08 0.09 0.10 0.07 <br />Aluminum Idissolvedl <0.05 <0.03 0.12 0.04 <0.03 <br />Barium Idissolvedl 0.04 0.03 0.03 0.06 0.05 <br />Boron Idissolvedl 0.11 0.11 0.08 0.11 0.09 <br />Cadmium Idissolvedl <0.005 <0.003 <0.006 0.004 <0.003 <br />Chromium Idissolvedl <0.01 <0.01 <0.02 <0.01 <0.01 <br />Co er Idissolvedl <0.01 <0.01 <0.02 0.01 <0.01 <br />Lead Idissolvedl <0.02 <0.02 <0.04 <0.04 <0.04 <br />Mercur Idissolvedl <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <br />Molybdenum Idissolvedl <0.01 <0.01 <0.02 <0.01 <0.01 <br />Nickel Idissolvedl <0.02 <0.01 <0.02 0.01 <0.01 <br />Phosphorus lortho dissolved) 0.17 0.25 0.04 0.13 0.43 <br />Vanadium Idissolvedl <0.01 <0.005 <0.01 <0.005 <0.005 <br />Notes: All values represent mean annual values in mg/I unless otherwise noted. <br />"' 1999 values are based on October 1998 sampling event only. No additional sampling <br />performed. <br />"' On 4/4/95, the laboratory reported total recoverable Fe and Mn instead of dissolved <br />values. These values were not included in the 1995 mean annual values reported in this <br />table. <br />"' Modification of the sampling procedure beginning in April 1996 may have caused Ca <br />values to be inconsistent with revious sam les. <br />t Montgomery Watson ' PO. Baz 774078 'Steamboat Spnngs, Colorado 80477 ' (970J 879-6160 <br />' ~L'\11)U.i~iu(Fryrm\IYY9\IWY HyiI.~J.p Fgmm <br />l/r'1/JJIm/ <br />