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Monitoring
<br />Monitoring
<br />Monitoring
<br />Quarterly Parameters
<br />Annual Parameters
<br />Type
<br />Location
<br />Frequency
<br />Alluvial
<br />Groundwater
<br />MC -04 -01 t
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />MC 04 -02
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />MLC -04 -01
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />1VIJ -95 -01
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />MJ -95 -03
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />Gossard
<br />We116
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />Alluvial
<br />Groundwater
<br />A -6 Well'
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />See Below
<br />Alluvial
<br />Groundwater
<br />North Good
<br />Spring We118
<br />Quarterly
<br />Alluvial
<br />Groundwater
<br />MT -95 -02
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />See Below
<br />Alluvial
<br />Groundwater
<br />A -7 to
<br />Quarterl y
<br />Alluvial
<br />Groundwater
<br />A -8 t t
<br />Quarterly
<br />Water level, Temperature,
<br />pH, Conductivity
<br />See Below
<br />•
<br />•
<br />Groundwater — Five additional alluvial groundwater sites will be monitored, as a result of
<br />expanding mining activity into the Collom Expansion Area as described below. Please
<br />refer to Exhibit 26, Item 1 for additional details regarding the wells in the Collom
<br />Expansion Area listed below. The existing six alluvial groundwater sites will continue to
<br />be monitored to some degree. (Field parameters gathered during 1 st through 4 quarters,
<br />lab samples taken during 2 and 4 quarters only).
<br />MC -04 -01 — Located in the Collom Gulch valley fill, this site represents the condition of the Collom
<br />Gulch valley -fill aquifer adjacent to the proposed Collom Lite pit.
<br />2. MC -04 -02 — Located in the Collom Gulch valley fill, this site represents the condition of the Collom
<br />Gulch valley -fill aquifer adjacent to the proposed Little Collom X pit.
<br />3. MLC -04 -01 — Located in the Little Collom Gulch valley fill, this site represents the condition of the
<br />Little Collom Gulch valley -fill aquifer below the proposed mining activities.
<br />4. MJ -95 -01 — Located in the West Fork Jubb Creek valley fill, this site represents the condition of the
<br />West Fork Jubb Creek valley fill aquifer adjacent to the northeast (downgradient) side of the
<br />proposed Collom Lite pit.
<br />5. MJ -95 -03 - Located in the Jubb Creek valley fill just downstream of the confluence of the West and
<br />East Forks of Jubb Creek, this site represents the condition of the valley -fill aquifer downgradient of
<br />the proposed Collom Lite pit.
<br />6. Gossard Well — Located within alluvium beneath the rail loop, this site represents the condition of
<br />the alluvial aquifer in the vicinity of the Gossard Coal Loadout Facility.
<br />7. A -6 Well — Located in the Good Spring Creek alluvium, this site represents the condition up-
<br />gradient of proposed and current mining activities.a
<br />8. North Good Spring Well — Located in the Good Spring Creek alluvium, this site represents the
<br />down -dip condition below existing and proposed mining activities.
<br />9. MT -95 -02 — Located in the Taylor Creek alluvium, this site represents the down -dip condition
<br />below current and proposed mining activities.
<br />10. A -7 — Located in the West Fork of Good Spring Creek alluvium, this site represents a potential
<br />down -dip condition below South Taylor mining activities.
<br />1.
<br />Collom — Rule 4, Page 15
<br />RULE 4 PERFORMANCE STANDARDS
<br />Revision Date: 8/5/11
<br />Revision No.: PR -03
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