1991-10-07_PERMIT FILE - M1991123 ‎(5)‎

• Permit No: M1991123
• IBM Index Class Name: Permit File
• Doc Date: 10/7/1991
• Doc Name: REGULAR OPERATION 112 RECLAMATION PERMIT APPLICATION FORM
• Media Type: D
• Archive: No

Based on the information available, the amount of water available
would be 96 acre-feet. A substitute water supply plan would be
used to administer these rights in the first year. The plan would
use the Carr Tyler Ditch and the Tom Delehant Ditch as the source
of water for replacement of consumptive uses attributed to the
mining operation.
!litigation Plan for wells Impacted by Dewatering
The proposed mining operation will cause a cone of depression in
the groundwater table. The dewatering of the pit would probably
cause a lowering of the groundwater table to a distance ranging
between 2, 000 to 2,500 feet. This is a rough estimate based on
past experience in similar situations. There are some mitigating
factors in the impacts because of other mining operations in the
immediate vicinity. Western Mobile has a pit adjacent to the
proposed mining operation that will intercept any drawdown impacts
downstream. Boulder Creek lies very close to the west and will
serve as a hydraulic barrier to any impacts. There are several
wells identified on the USGS maps that were not found in the State
Engineer's files. These wells may be non-permitted and existing or
possibly abandoned. Based on the decrees and the locations of the
wells in the area there would appear to be no more than two wells
that could be impacted by the mining operation.
The operator proposes the following steps will be taken to monitor
groundwater levels and mitigate well owners that might be injured.
1 . Three monitoring wells will be installed to bedrock around the
perimeter of the property. These wells will be used to measure
fluctuations in the groundwater table during the mining
operation. Readings would be taken on a monthly basis.
Construction will consist of two inch diameter PVC slotted
pipe with a gravel pack around the casing, locked cap, and
sealed at the top from surface water contamination.
2 . Well owners would be notified of the mining operation and
asked for permission to take initial readings on their wells
for depth to groundwater. If permission is not granted, then
estimates based on the State Engineer's records will have to
be used.
3. In the event a well owner feels a well has been injured they
may either contact the operator or the MLRD, the operator will
examine the monitoring well records and the location of the
claimed injury. The State Engineer's office will be given the
opportunity to participate in the review.
4. If it is determined the well is injured due to the mining
operation, then the operator will look at several options for
mitigation. These options will be:
G-6