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<br />TABLE 2 (cool ) <br />Historic Summary of Water Oauliry <br />at PRS - 3, North Fork of the Purgatoire <br />River, below Golden Eagle <br /> <br /> <br />SAMPLING DATE Data <br />Entry Minimum <br />Value <br />1989 Maximum <br />Value <br />1909 Mean <br />Average <br />1989 Minimum <br />Value <br />1990 Maximum <br />Value <br />1990 Mean <br />Average <br />1990 Minimum <br />Value <br />1991 Maximum <br />Value <br />1991 Mean <br />Average <br />1991 Minimum <br />Value <br />1992 Maximum <br />Value <br />1992 Maan <br />Avenge <br />1992 Minimum <br />Value <br />1993 Maximum <br />Value <br />1997 Mean <br />Avanpe <br />1997 <br />Parameter Units <br />Slafl Gauge lest 1 1.88 1.32 1 1.52 1 OB 0.9 2.15 1.63 0 1.6 0.5142 1.31 2.85 1.71 <br />Flow cis 23.77 26.6 25.18 - - - - - - 0 0 0 18.80 102.60 38.19 <br />pH standard 7 2 9.7 8.56 8.05 9.1 0.6 7 51 B 20 7.99 7.1 8 7.561 7.60 9.00 8.27 <br />Conductivity umhos/cm 265 640 383.66 198 515 310 175 381 236.5 182 930 332.7 135.00 510.00 280.77 <br />Temperature 'C 0 23.4 8.3 0.1 268 14.02 2.3 22 12.99167 34.9 77.4 50.36 3.08 15.45 9.89 <br />Dissolved Oxygen ppm 7.1 12.9 10.12 6 2 19 fi 9.3 6.7 16.5 10.46 7.1 15.3 10.817 7.70 12.80 9.15 <br />Hardness mg/I 87.00 190.00 155.88 <br />Iron mg/I 0.1 0.08 0.17 0.4 O.OB <br />tSS mg/l 4 2 11 5 2.50 <br />iDS mg/I 105 182 224 220 210.00 <br />TCS mg/l 49 59 5 70 84.00 <br />Carbonate mg/l 1 3 0.5 2.5 3.00 <br />Bicarbonate mgll 166 ~ 160 186 260 170.00 <br />Manganese mg/l 0.03 0.03 0.03 0.04 9.00 <br />Sodwm mg/l 7 7 9.9 17.5 9.00 <br />Chloride mg/I 1.2 1.0 2.7 2.89 7.00 <br />Sullate mgll 26 37 38 32 27.00 <br />Calnum mg/l 47 4B 50.2 47 44.OD <br />Magnesium mg/l 8.14 9 9.6 8.6 9.00 <br />Potassium mgll 0.78 1 1.42 0.9 1.00 <br />Hytlroxide mgll 0.5 <1 0.5 - 0.50 <br />Fluoride mgd 0.3 0.3 0.05 0.34 0.28 <br />Lead mg/I 0.025 <0.05 0.025 0.005 0.03 <br />Selenium mg/I 0.05 <0.10 0.05 0.001 0.003 <br />SAR standard 0.25 024 0.34 0.475 0.72 <br />