2008-06-27_REPORT - C1981012

• Permit No: C1981012
• IBM Index Class Name: REPORT
• Doc Date: 6/27/2008
• Doc Name: 2007 Annual Hydrology Report
• From: Peak Project Management, LLC
• To: DRMS
• Annual Report Year: 2007
• Permit Index Doc Type: Hydrology Report
• Email Name: KAG
• Media Type: D
• Archive: No

• •
TABLE B-2"•'PRS-4 Purgatoire River Below Mine Site Summary of Water Quality Data
Parameters Year 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
Staff Gauge, Maximum feet 10 27,6
Flow, Mean cfa 255.4 194.09 10.04 8.121 34.94 91.38 5.5 5.5 13.9 91.5 55.5
Flow, Minimum crs 5.31 14.4 0.2 7.2 14.75 21.2 36.9 5.63 16 14.8
Flow, Maximum cfs 780 680 60 8.62 67.8 230 36.9 31 268 96.2
pH Mean (field) standard 7.8 8.2 8.01 8.37 7.85 8.1 8.25 7.6 7.3 7.4 7.63 8.39 8.07
pH, Minimum (Feld) standard 7.33 7.4 8.05 7.92 6.7 7.8 7.4 7.2 7.4 7.3 7.8 7.8
H Maximum field standard 8.6 9.05 7.97 8.91 9.1 8.59 7.8 7.3 7.4 7.9 8.77 8.61
p"_(Lab) standard 8 8.1 8.2
Conductivity, Mean umhos/cm 317.1 257.56 204.16 237.31 236 224.9 293 272 238 375 313 288 370
Conductivity, Minimum umhos/cm 214 135 6.3 111 115 103 183 222 157 295 237 248
Conductivity, Maximum umhos/cm 910 348 557 535 540 325 425 348 319 328 322 583
Temperature, Mean °c 10.75 9.89 12.6 12.7 12.7 9.5 9 6.2 9.65 7.9 11.08 7.15 1.3
Temperature, Minimum °c 1.6 3.47 5.3 6.2 0.3 0.8 0.3 3.1 3.9 6.1 0.7 1.5 1.2
Temperature, Maximum °c 22.27 14.4 17.9 20.5 20.5 20.1 17.2 10.1 15.4 9.7 22.9 11.5 1.5
Dissolved Oxygen m 9.32 9.9 0.6 7.49 8.681
Iron (total) mg/1 0.07 0.41 0.22 0.12 0.11 0.37 0.41 0.38 0.22 0.22 0.15 0.12 0.42
Iron (total recoverable) mg/1 0.4 0.2 0.11 0.27 0.27 0.17 0.11 0.34
Iron dissolved m g/1 0.04 0.02 0.04 0.08 0.08 0.05 0.07 0.07
TSS mg/1 2.5 16 22 5 5 <5 6 10 <5 <5 <5
TDS @180C mg/1 290 175 200 160 160 190 220 230 200 200 170 190
TDS (calculated) mg/1 167 167 206 226 194 197.5 187 197
TCS m g/1 100 70
Carbonate mg/1 2.5 0.5 <2 2 <2 <2 <2 <2 <2 <2 <2 <2
Bicarbonate M g/1 160 125 140 121 122 137 153 146 142 142 134 137 143
Manganese mg/1 0.03 0.035 0.057 0.035 0.035 0.038 0.038 0.03 0.058 0.064
Manganese (total) mg/1 0.056 0.042 0.056
Manganese dissolved m g/1 0.012 0.022 0.023 0.024 0.02 0.035 0.03 0.022
Sodium mg/I 7.1 7.5 7.9 6.2 8.5
Sodium dissolved mg/1 8.7 11.1 9 8.1 8.7 7.7 6.9 8.4
Chloride mg/1 2.49 3 2 2 2 1 7 2 2 2 2 2
Sulfate M g/1 33 27 30 25 30 50 50 30 40 40 30 30 40
Calcium mg/1 55.7 42 32.67 38.57 43.4
Calcium dissolved m g/1 50.75 52.7 49.8 48.8 51.5 42.2 56.5 50.5
Magnesium mg/1 10.9 8 5.37 6.79 7.7 7.4 8.7
Magnesium dissolved m g/1 9.05 11.3 9.5 8.6 9.4 7.8 8.7 9.4
Potassium mg/1 1 1 1.1 1.1 1.2
Potassium dissolved M g/1 1.6 1.7 1.3 1.5 1.4 1.2 1 1.2
Hydroxide mg/1 0 0.5 <2 2 <2 <2 <2 <2 <2 <2
Fluoride m /1 0.26 0.24 0.2 0.2 0.2 0.2 0.2 0.2
Lead mg/1 0.005 0.025 <.02 0.02
Lead dissolved m g/1 <,02 <.001 <.001 <.001 <.001 <.001 <.0001 <.001
Selenium mg/1 0.001 0.0025 <.001 0.001
Selenium dissolved M g/1 <.001 <.001 <,001 <.001 <.001 <.002 <.001
Mercury mg/1
SAR standard 0.25 0.259 8.5 0.23 0.31 0.29 0.36 0.31 0.28 0.29 0.28 0.22 0.28
Settleable Solids Mg/1 <5
Zinc mg/1 <.01 <.01
Hardness m g/1 184 143.6 180 124.5 140 164 178 164 157 187 1 3R 177 ,a<
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