2025-10-31_PERMIT FILE - C1981019 ‎(5)‎

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 10/31/2025
• Section_Exhibit Name: 2.05 Operations and Reclamation Plans
• Media Type: D
• Archive: No

RULE 2 PERMITS

Rule 2 Permits 2.05-25 Revision Date: 8/6/25
Revision No.: PR-05
for any purpose, each well will be eliminated by plugging with concrete to the surface and removal
of the associated surface structure.

Plugging procedures utilized for exploration drill holes that will not be mined through during the
current Permit term are as follows:

1. Drill holes drilled deeper than the stripping limit (450-500 feet) will be plugged by
pumping cement or heavy solids bentonite Plug Gel or chips through the drill stem from
the bottom up to within 3 feet of the ground surface.
2. Drill holes shallower than stripping limits (450-500 feet) may be plugged with the ready-
mix concrete method instead the method in #1 to within 3 feet of the ground surface.
3. Drill holes with no water or coal zones may be plugged by backfilling with cuttings, and
placing a plug ten feet below the ground surface to support a cement plug or bentonite
chips to within 3 feet of the ground surface.

For safety considerations, exploration drill holes that will eventually be mined through during
normal mining activites need only be covered with wood, plastic or other such material or
otherwise bermed to prevent access until mining operations mine through each hole.

Those holes completed in aquifers will be sealed entirely with cement or other suitable sealant to
within 3 feet of the ground surface.

Where possible, the sealed holes will be marked. At times reclamation operations will cover up
the sealed drill holes and marking of holes will not be possible.

Within 60 days of the abandonment of a drill hole, approved drilling program or when requested
by the Division, the following information will be submitted:

a) Location of drill hole as plotted accurately on a topographic map.
b) Depth of drill hole.
c) Surface elevation of drill hole.
d) Intervals where water was encountered during drilling activities.
e) Diameter of drill hole
f) Type of amount of cement or other sealant used.
g) Name of drilling contractor and license number of rig.
h) How the hole was worked.

Exploration taking place inside and outside of the permit area will be handled through the Notice
of Intent (NOI) procedures. See the appropriate NOI for details for each program.

Water and Air Quality Control Techniques

Steps to be taken to comply with the Clean Water Act and other applicable water quality laws and
regulations and health and safety standards include a comprehensive drainage and sediment control
plan described in Section 2.05.3 and Sections 4.05.1 through 4.05.18. With respect to compliance
with the Clean Water Act, Colowyo has a discharge permit from the Colorado State Department