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)
Available water capacity: moderate.
Permeability: moderate.
Runoff.• rapid.
VEGETATION
Potential natural communities:
Handran: kobresia/Ross' avens-curly sedge (Komy/Gerot-Caru)typical site and tufted
hairgrass/Ross' avens (Dece/Gerot) moist site and grayleaf willow-barrenground willow/tufted
hairgrass (Sagla-Sabr/Dece) moist site.
Eyre: kobresia/Ross' avens-curly sedge (Komy/Gerot-Caru) and alpine clover/curly sedge
(Trda2/Caru) and Parry's clover/Ross' avens (Trpap/Gerot).
Typic Cryochrepts: subalpine fir-Engelmann spruce/Rocky Mountain whortleberry (Abla-
Pienl/Vamy) and subalpine fir-Engelmann spruce/elk sedge (Abla-Pien1/Cage1) and subalpine
fir-Engelmann spruce/common juniper (Abla-Pien 1/Juco)south slopes.
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
Handran: slight.
Eyre: slight.
Rubble land: slight.
Typic Cryochrepts: severe-slope.
Improved unsurfaced roads:
Handran: slight.
Eyre: moderate -shallow depth to bedrock.
Rubble land: slight.
Typic Cryochrepts: severe-slope.
Offroad vehicle roads and trails:
Handran: severe-soil erosion, surface compaction and rutting.
Eyre: severe -soil erosion, surface compaction and rutting.
Rubble land: severe - cobbles, stones and boulders.
Typic Cryochrepts: severe-slope and erosion hazard.
Foot trails and paths:
Handran: slight.
Eyre: slight.
Rubble land: slight.
Typic Cryochrepts: moderate-slope.
Revegetation Limitations:
Handran: severe-short growing season and low available water capacity.
Eyre: severe -short growing season, shallow depth to bedrock and low available water
capacity.
Rubble land: severe - rubble land.
Typic Cryochrepts: moderate-slope and erosion hazard.
Revegetation Considerations: Cold tolerant plants are required to survive alpine climate. Mulch
will conserve soil moisture and protect seedling establishment.
Wildlife Management Considerations: This map unit provides food and shelter for livestock
and upland game animals.
Acid precipitation buffering capacity: moderate.
Exhibit I —Appendix A I-A-35 March 2024