PERMFILE50229

• Permit No: C1981013
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: EXHIBIT 06 HYDROLOGY INFORMATION
• Media Type: D
• Archive: No

TABLE 1
Historic Summary of Water Qaulity
at PRS - 1, Middle Fork of the Purgatoire
River, above New Elk Mine
Data Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean Minimum Maximum Mean
Entry Value Value Average Value Value Average Value Value Average Value Value Average Value Value Average
SAMPLING DATE 1984 1984 1964 1985 1965 1985 1966 1966 1966 1967 1987 1967 1968 1966 1966
Parameter Units
Staff Gauge feet
Flow cis
pH standard
Conductivity umhos/cm
Temperature 'C
Dissolved Oxygen ppm
Iron mg/I
TSS mg/I
TOS mg/I
TCS mg/I
Carbonate mg/I
Bicarbonate mg/I
Manganese mg/I
Sodium mgll
Chloride mg/I
Sullale mg/I
Calcium mg/t
Magnesium mg/I
Potassium mg/I
Hydraxitle mg/1
fluoride mgll
Lead mg/I
Selenium mg/1
SAR standard
- - - - - - - - - - - 0.2 - - -
5.9 52.7 19.7 5.5 61.7 25.3 7.2 122 26 5.34 63.97 22.62 3.17 116.2 23.31
7 8.1 7.6 7.2 6.3 74 6.3 6.2 7.4 7.3 8 7.66 6.4 8.8 8.19
109 360 261 160 350 2B2 143 353 264 179 467 344.75 229 411 315.45
0.1 17.9 8.1 0.6 17.9 7.5 1.8 15.9 7.5 0 19.3 6.9 0.3 18.2 9.15
16.9 14.5 1.8 12.4 6.35 6.8 13 9.21
0.47 0.17 0.21 0.06 0.22
25 11 4 2 4
203 207 1B0 228 172
30 15 18 14 51
<1 <1 ct 0.5 0.5
189 153 159 172 154
0.08 <.01 0.01 0.01 0.02
7.9 8.3 7.1 6.7 7.5
3.5 1.2 1.1 6 1.8
43 46 39 44 %
50 46 44 51 48
9.4 9.3 7.9 10.1 8.9
1.21 1.18 0.93 1.01 1.17
<,p5 0.25 -
- - 0.1 0.2 0.2
<.01 - c.01 0.005 0.025
<.01 ~ - <.01 0.005 0.05
0.27 0.29 0.26 0.29 0.27
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