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' fammrv /999 Kerr Coa! Compam• ' 1998 .i nnua! Hvdrolo~• Report "CO Permit :Vo. G80-006 ~ R+,¢e 8 <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br /> <br />~J <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />TABLE 3 <br />HISTORIC MINE AREA OVERBURDEN WATER QUALITY DATA <br />SITE 79-1 <br />Parameters 1994 1995 1996 1997 1998 <br />Temp (°CI 7.5 7.5 8.5 8.9 9.9 <br />pH Isul 8.4 7.4 7.9 6.3 7.8 <br />E.C. (µmhos/cml @ 20° C 1000 1050 1 535 2330 1900 <br />TDS 831 841 1145 1410 1180 <br />SAR lin water) 25.62 25.31 23.35 24 <br />Calcium Idissolvedl 9 9 19.6"' 26.7 16.6 <br />Sodium Idissolvedl 294 297 395 496 439 <br />Ma nesium Idissolvedl 1 1 2.6 3.1 2.7 <br />Potassium Idissolvedl 2 2 2.1 2.3 2.0 <br />Sulfate 236 270 473 615 380 <br />Chloride 15 17 21 44 69 <br />Carbonate las CaC031 0 <2 <2 <2 <2 <br />Bicarbonate las CaC03) 416 429 407 452 512 <br />Fluoride 0.3 0.4 0.3 0.3 0.3 <br />Nitrate-Nitro en Idissolvedl 1.57 1.74 1.11 <0.02 0.03 <br />Iron Idissolvedl <0.02 0.07 0.07 0.25 .10 <br />Man anese Idissolvedl 0.01 <0.01 0.08 0.09 .10 <br />Aluminum Idissolvedl <0.05 <0.05 <0.03 0.12 0.04 <br />Barium Idissolvedl 0.04 0.04 0.03 0.03 0.06 <br />Boron Idissolvedl 0.12 0.11 0.11 0.08 0.11 <br />Cadmium Idissolvedl <0.005 <0.005 <0.003 <0.006 0.004 <br />Chromium Idissolvedl <0.01 <0.01 <0.01 <0.02 <0.01 <br />Cop er Idissolvedl <0.01 <0.01 <0.01 <0.02 0.01 <br />Lead Idissolvedl <0.02 <0.02 <0.02 <0.04 <0.04 <br />Mercury Idissolvedl <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <br />Molybdenum Idissolvedl <0.01 <0.01 <0.01 <0.02 <0.01 <br />Nickel Idissolvedl <0.02 <0.02 <0.01 <0.02 0.01 <br />Phos horns (ortho dissolved) 0.17 0.17 0.25 0.04 0.13 <br />Vanadium Idissolvedl <0.01 <0.01 <0.005 <0.01 <0.005 <br />Notes: All values in mg/I unless otherwise noted. <br />All values represent mean annual values. <br />On 4/4/95, the laboratory reported total recoverable Fe and Mn instead of dissolved values. <br />These values were not included in the 1995 mean annual values reported in this table. <br />"'Modification of the sampling procedure beginning in April 1996 may have caused values <br />to be inconsistent with revious samples. <br />,tlorttgomerv Watson * P.O. Box 774018 * Steamboat Springs, Colorado 80477 *(970J 879-6160 <br />' ¢•ve~ru.,,..i x,yo.,~rvvv~rovxHw.dyo xyo., <br />l/IIN9•!v <br />