REP24144

Opening ID 421
Type of Feature Shaft
Excavated Dimension
3.00 X 7.00 Ft
Eroded Dimension
25.00 X 25.00 Ft
Present Dimension
3.00 X 7.00 Ft
Depth
27 ft
Shape of Opening
Rect /funnel
Surficial Material
Mine dump
Depth to Bedrock
6
Drainage
None
Existing Access Deterrents
Fence
Preferred Closure Method
Backfill
Backfill by placing on -site materials back into opening. Remove then replace
existing fence after completing backfill. riprap is not required. Install
monument to specifications.
Opening ID 422
Type of Feature Shaft
Excavated Dimension
Eroded Dimension
Present Dimension
Depth
Shape of Opening
Surficial Material
Depth to Bedrock
Drainage
Existing Access Deterrents
Preferred Closure Method
8.00 X 10.00 Ft
10.00 X 12.00 Ft
10.00 X 12.00 Ft
500
Keyhole
Mine dump
10
None
Loose fence
Monolithic Plug
Place existing on -site materials into shaft to
of the cone shaped -part of the shaft. Install
concrete in the opening according to Monolithi
After seven days minimum, complete the filling
materials back into the opening to bring it to
and install monument to specifications. Dress
with existing slopes.
bring bottom plug to the level
18 cubic yards of riprap and
Plug Closure specifications.
of the shaft by placing on -site
grade. Replace existing fence,
all borrow areas to blend in
16