2015-01-27_REVISION - M1979191 ‎(14)‎

• Permit No: M1979191
• IBM Index Class Name: REVISION
• Doc Date: 1/27/2015
• Doc Name: Three Bells Mine Adequacy Response AM01
• From: GEI Consultants, Inc.
• To: DRMS
• Type & Sequence: AM1
• Email Name: ECS
• Media Type: D
• Archive: No

measurement during August of 2013 (Table 4). There are several monitoring wells that
were installed during the design phase of the Ditullio Property to assist in data gathering for
design and mine planning. However, the location of the monitoring wells will result in
their destruction during the construction of the Developed Water Storage Five new
monitoring wells were installed (Table 5) on the Ditullio Property in January 2015 and will
be monitored monthly for changes in groundwater levels through the first year and then
monitored quarterly for the remainder of permitted mining activities
i aUie 4: veiuman
opservatlon wen water level aata;
proviaea py Ueere and Ault
Monitoring
Well Name
TH -6
TH -7
TH -8
Th -9
Top of PVC
4810.2
4803.6
4815.8
4812.8
Casing
Elevation (ft)
Casing
Sticku ft
2 =3
1_6
2_9
3_1
Ground
Elevation of
4807.8
4802.0
4812.9
4809.7
Well Lftj
Bottom
Elevation of
4795.8
4781.8
4784.9
4791.7
Well ft
Total Well
Depth
Ground-
12.0
20.2
28.0
18,0
Bottom ft
Depth
Ground
Depth
Ground
Depth
Ground
Depth
Ground
From
Water
From
Water
From
Water
From
Water
Date
Top of
Elevation
Top of
Elevation
Top of
Elevation
Top of
Elevation
(ft)
jftJ
u
Casing
Casing
Casing
Casinq
M
M
M
u
0)
8/23/2013
8_4
4801.8
20.7
4782.9
24.4
4791.6
L6.6 _
1 4796.2
Should MM receive notification of adverse (a deviation from historic groundwater levels
of +/ -2 feet) groundwater conditions or a complaint from the well owner, MM will
notify the DRMS and propose mitigation measures. Mitigation measures may include
the following and will be done in consultation with the DRMS:
• Investigation of the notification/complaint to establish parameters and to detennine
if MM mining operations are the sole cause or contributing to the adverse
groundwater conditions. This measure may include the installation of additional
monitoring wells at strategic locations to assist in data gathering.
• In the event of adverse Groundwater conditions MM will consult with the DRMS on
appropriate mitigation measures including (but not limited to) providing temporary or
permanent alternative water sources to impacted well owners repairing or deepening
affected wells, installing_ physical measures such as perimeter drains well points low
permeability barriers, etc. to assist in mitigation of the adverse groundwater conditions
GEI Consultants, Inc. 26 June - January 20145
Three Bells Mine Reclamation Permit Amendment