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• i • <br />TABLE B-1*-PRS-1 Purgatoire River Above Mine Site Summary of Water Quality Data <br />Parameter's Date 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 199/ iaaa <br />Staff Gauge, Mean feet 0.35 0.25 0.31 0.27 0.38 <br />Flow, Mean ds 52.7 25.3 28 22.62 23.31 17.43 23.35 264.86 245.33 12.57 8.117 43.77 <br />Flow, Minimum cfs 5.9 5.5 7.2 5.3 3.2 17.3 9.12 8.8 30.2 6.8 7.6 16.8 <br />Flow, Maximum cts 52.7 81.7 122 63.97 116.2 17.6 59.2 1120 720 19.2 8.8 106 <br />pH Mean <br />(field) 7.6 7.4 7.4 7.66 8.12 8.12 8.23 7.89 7.66 8.2 8.56 8.34 8.15 8 8.28 <br />pH, Minimum (field) <br />( <br />field) standard 7 7.2 6.3 7.3 6.4 6.9 7.3 6.9 7.2 7.4 7.85 7.31 7.4 8 8 <br />H Maximum field standard 8.1 8.3 8.2 8 8.8 9.2 9.5 8.4 8.2 9 8.95 8.85 8.55 8 8.7 <br />H Lab standard 8 8 8 8 <br />Conductivity, Mean umhos/cm 261 282 264 345 315 355.13 268.83 206.33 334.3 237.82 311 192.2 276 213.9 287 <br />Conductivity, Minimum umhos/an 109 160 143 179 229 411 179 152 195 123 108 100 160 118 131 <br />Conductivity, Maximum umhos/cm 360 350 353 467 599 420 239 955 380 859 372 433 320 560 <br />Temperature, Mean °c 8.1 7.5 7.5 6.9 9.15 10.1 12.4 12 9.8 9.02 11.32 13.29 7.9 8.37 8.7 <br />Temperature, Minimum °c 0.1 0.6 1.8 0 0.3 0.6 0.7 5.8 1.67 3.44 4 6.5 0.2 0.8 0.3 <br />Temperature, Maximum °c 17.9 17.9 15.9 19.3 18.2 22.5 24.2 21.1 20.6 14.17 17.9 18.9 15 19.9 18.1 <br />Dissolved Oxygen m 9.38 9.8 10.6 10.8 9.55 7.03 7.83 8.5 <br />Iron (total) mgn 0.11 0.11 0.23 0.13 0.15 0.11 0.59 0.12 0.39 0.22 <br />Iron (total recoverable) m91 <br />.03 <br />0 <br />0.22 <br /> <br />Iron dissolved <br />m 1 10 <br />.02 <br />0 <br />TSS mgn 25 11 4 2 4 10 6 8 2.5 2.5 5 5 190 8 <br />TDS @ 180C mgn 203 207 180 228 172 177 190 236 180 170 210 150 150 203 220 <br />TDS (calculated) mgn 162 149 218 <br />TCS m 30 15 18 14 51 10 62 5 30 66 <br />Carbonate mgn <1 <1 <1 0.5 0.5 1 3 0.5 2.5 0.5 3 <2 <2 <2 <br />Bicarbonate n 19A 153 159 172 154 141 146 176 170 140 140 121 118 134 150 <br />Manganese mgn 0.08 <.01 0.01 0.01 0.02 0.01 0.04 0.03 7.1 0.0125 0.03 0.06 0.032 <br />Manganese (total) mgn 0.038 0.0 <br />Manganese dissolved 0.008 0.0221 <br />1 <br />Sodium mgn 7.9 8.3 7.1 8.7 7.5 6.6 7 9 5.7 6 7.4 6.6 6.1 <br />Sodium dissolved m 10.5 <br />Chloride mgn 3.5 1.2 1.1 6 1.6 1.2 1.6 1.9 2.26 2 2 2 1 1 2 <br />Sulfate mciA 43 48 39 44 34 31 44 42 32 26 30 23 20 50 50 <br />Calcium mgn 50 46 44 51 46 43 47 55.1 39 42 48 45.6 42.9 51.5 <br />Calcium dissolved m 52 <br />Magnesium mgn 9.4 9.3 7..9 10.1 8.9 7.3 8 10.5 7.1 8 9.2 7.8 7.2 10.1 <br />Ma nesium (dissolved) MgA 11.2 <br />Potassium mgn 1.21 1.18 0.93 1.01 1.17 0.92 1 1.34 0.7 1 1.1 1.3 1.1 1.5 <br />Potassium dissolved m 1.8 <br />Hydroxide mgn <br /><.05 <br />0.25 <br />0.5 <1 <br />0.5 <br />0.5 <br />0.5 <br /><2 <2 <br /><2 <br /><2 <br /> <br />Fluoride <br />m 1 <br />0.1 <br />0.2 <br />0.2 <br />0.3 <br />0.4 <br />0.05 <br />0.35 <br />0.25 <br />0.2 <br />0.3 <br />0.2 <br />0.2 <br />0.2 <br />Lead mgn <.01 <.01 0.005 0.025 0.025 <.05 0.025 0.01 0.03 0.02 0.02 0.001 <br /> <br />Lead dissolved <br />m <.001 <br />Selenium mgn <.01 <.01 0.005 0.05 0.05 <.1 0.05 0.001 0.003 <.001 <.001 <.001 <br /> <br />Selenium dissolved <br />m <.001 <br />Mercury rngA <br />SAR ndard <br />sta 0.27 0.29 0.26 0.29 0.27 0.24 0.25 0.29 0.22 0.22 0.24 0.23 0.28 0.34 <br />Settleable Solids mgn <br />Zinc mgn <br />Hardness m 146 134 170 176