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<br />TABLE 2 <br />Historic Summary of Waler ~aulity <br />at PRS - 3, Norlh Fork of the Purgatoire <br />River, below Golden Eagle <br /> <br />I~ <br /> <br /> <br />SAMPLING DATE Data <br />Entry Minimum <br />Value <br />1984 Maximum <br />Value <br />1984 Mean <br />Average <br />1984 Minimum <br />Value <br />1985 Maximum <br />Value <br />1985 Mean <br />Average <br />1985 Minimum <br />Value <br />1986 Maximum <br />Value <br />1986 Mean <br />Average <br />1986 Minimum <br />Value <br />1987 Maximum <br />Value <br />1987 Mean <br />Average <br />1987 Minimum <br />Value <br />1988 Maximum <br />Value <br />1988 Mean <br />Average <br />1988 <br />Parameter Unils <br />Staff Gauge feet - - - - - - - - - - - - - - <br />Flow cfs 12.3 172.4 44 17.3 169.9 34.75 8.8 117.7 29.9 8.22 102.13 38.79 4.97 142.4 42.28 <br />pH standard 7.2 8.4 7.8 7.3 8.4 7.9 7 8.7 7.9 7 7.9 7.55 6.5 8.8 8.13 <br />Conductivity umhos/cm 153 357 284 180 379 287 186 433 303 187 445 354.66 269 461 336.45 <br />Temperature °C 0.3 16.7 8.6 0.3 20 8.7 0.3 18.9 9.3 0 18.8 9.15 0.2 23.7 11.75 <br />Dissolved Oxygen ppm 19.4 15.6 - 1.5 13.4 8.45 5.8 13.7 8.88 <br />Hardness mgA <br />Iron mg/I 0.44 0.17 0.22 0.18 0.23 <br />TSS mg/I 19 11 <4 4 2 <br />TDS mgA 224 196 238 230 251 <br />TCS mg/I 40 12 44 43 62 <br />Carbonate mg/l <7 3 <1 0.5 3 <br />Bicarbonate mgA 195 155 412 186 222 <br />Manganese mg/I 0.11 <.01 0.04 0.03 0.03 <br />Sodium mg/I 15 8.6 22 14.8 29 <br />Chloride mg/I 3.5 1.2 1.2 6.1 1.8 <br />Sulfate mgA 40 42 34 38 34 <br />Calcium mgA 48 45 45 48 48 <br />Magnesium mg/I 10.1 8.9 9.2 9.8 9.5 <br />Potassium mgA 1.19 1.06 1.17 0.92 1.16 <br />Hydroxide mg/I - - <.OS 0.25 - <br />Fluoride mgA - - <.2 0.2 0.3 <br />Lead mgA <.01 - <.Dt 0.005 0.025 <br />Selenium mgA <.01 - <.Ot 0.005 0.05 <br />SAR standard 0.51 0.31 0.78 0.51 1.02 <br />