2024-05-17_REVISION - M1977493 ‎(3)‎

• Permit No: M1977493
• IBM Index Class Name: Revision
• Doc Date: 5/17/2024
• Doc Name: Exhibit I - Soil Information
• From: Climax
• To: DRMS
• Type & Sequence: TR37
• Email Name: TJ1
• Media Type: D
• Archive: No

Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37)
Depth to seasonal high water table: 0 to 1 feet.
Available water capacity: low.
Permeability: rapid.
Runoff: slow.
Eyre
Landform:
Parent Material:
Effective rooting depth: less than 20 inches.
Natural drainage class: well.
Available water capacity: low.
Permeability: moderate.
Runoff: rapid.
VEGETATION
Potential natural communities:
Cryoborolls: tufted hairgrass/Ross' avens (Dece/Gerot) typical site and kobresia/Ross' avens-
curly sedge (Koury/Gerot-Caru) exposed site and grayleaf willow-barrenground willow/tufted
hairgrass (Sagla-Sabr/Dece) moist site.
Cryaquolls: grayleaf willow-willow/sedges (Sag la-SAL I/CARE) stream drainages and water
sedge/beaked sedge (Caaq/Carob) seeps.
Borohemists: water sedge/beaked sedge (Caaq/Carob) seeps and Baltic rush/sedges
(Juba/CARE) bogs.
Eyre: kobresia/Ross' avens-curly sedge (Koury/Gerot-Caru) and alpine clover/curly sedge
(Trda2/Caru) and Parry's clover/Ross' avens (Trpap/Gerot).
USE AND MANAGEMENT CONSIDERATIONS
Major uses: dispersed non-motorized recreation, wildlife habitat and watershed.
Mass movement potential:
Landslides: low.
Debris flows: low.
Snow avalanche: low.
Road and trail limitations:
Cut and fill slope stability
Cryoborolls: slight.
Cryaquolls: severe - high water table and saturated soil.
Borohemists: severe - high water table and organic materials.
Improved unsurfaced roads:
Cryoborolls: slight.
Cryaquolls: severe - high water table and saturated soil.
Borohemists: severe - high water table and organic materials.
Offroad vehicle roads and trails:
Cryoborolls: severe - soil erosion, surface compaction and rutting.
Cryaquolls: severe - high water table and saturated soil.
Borohemists: severe - high water table and organic materials.
Foot trails and paths:
Cryoborolls: slight.
Cryaquolls: severe - high water table and saturated soil.
Borohemists: severe - high water table and organic materials.
Revegetation Limitations:
Cryoborolls: severe - short growing season, low available water capacity and low inherent
fertility.
Cryaquolls: severe -short growing season, high water table.
Borohemists: severe - short growing season, organic material takes thousands of years to
replace.
Exhibit I —Appendix A I-A-30 March 2024