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Ground Water Monitoring Plan
<br />The Water Quality Monitoring schedule for the Williams Fork Mines is found in
<br />Exhibit 29 of the permit application. There are ten bedrock ground water
<br />monitoring wells and six alluvial monitoring wells. Six of the ten bedrock
<br />monitoring wells -the No. 5 Mine, TR -4, TR -7A, 81 -01, 259 and the No. 9 Mine
<br />Well -are sampled quarterly and annually for the parameters listed shown below.
<br />Quarterly: Temperature, Conductivity, pH and Water Level
<br />Annually: Temperature, Conductivity, pH, Water Level, Alkalinity,
<br />Hardness, Calcium, Magnesium, Sodium, Bicarbonate, Carbonate,
<br />Chloride, Sulfate, Arsenic, Cadmium, Lead, Mercury, Selenium, Iron,
<br />Manganese, Zinc, Boron, Molybdenum and Nitrate.
<br />Water levels in the four remaining bedrock monitoring wells- 83 -01, 83 -02, 83 -03,
<br />and 84 -01 -are measured quarterly.
<br />Alluvial valley wells AVF -3, AVF -5, and AVF -6 are also monitored for the
<br />quarterly and annual parameters listed above for the bedrock monitoring wells.
<br />Alluvial Wells YAW -1, YAW -2, and YAW -5 or YAW -6 will be monitored
<br />quarterly and annually for the parameters listed below in conjunction with the
<br />development of the North Mains if and when this occurs in the future:
<br />Quarterly: Temperature, Conductivity, pH and Water Level
<br />Annually: Temperature, Conductivity, pH, Water Level, Alkalinity,
<br />Hardness, Calcium, Magnesium, Sodium, Bicarbonate, Carbonate,
<br />Chloride, Sulfate, Arsenic, Cadmium, Lead, Mercury, Selenium, Iron,
<br />Manganese, Zinc, Boron, Molybdenum, Nitrate, Ammonia, Nitrite and
<br />Phosphate.
<br />While the Williams Fork Mines are in temporary cessation status, the water
<br />monitoring schedule found in Appendix D of Exhibit 29 will be in effect. In
<br />accordance with the approved plan, Well TR -7A will be monitored annually for
<br />water level and field parameters for the well discussed above. The No. 5 Mine
<br />Sump will be monitored quarterly for the water level of the sumped water at the
<br />well bore location measurements.
<br />Surface Water Monitoring Plan
<br />Water quality in the Williams Fork River is monitored at an upstream site and a
<br />downstream site. Parameter lists are shown below.
<br />Monthly: Temperature, Conductivity, pH, Suspended Solids and flow rate.
<br />Williams Fork Mines 22 Permit Renewal 06
<br />C- 1981 -044 December 8, 2014
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