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)
Teewinot
A representative pedon of this soil occurs on a 38 percent northeast facing slope at 11,680 feet
elevation located in the SW 1/4, NW 1/4, sec. 5 , T. 8 S., R. 89 W., in Eagle County, Colorado
supporting a kobresia/golden avens plant association.
Al -- 0 to 7 inches; (10YR 5/2)very stony loam, (10YR 3/2) moist; weak fine subangular blocky
structure parting to weak fine granular; very friable, nonsticky, nonplastic; many fine and very
fine and few medium roots; many fine interstitial pores; 45 percent subangular sandstone
rock fragments; moderately acid; clear smooth boundary.
Bw -- 7 to 16 inches; (5YR 7/4)very cobbly sandy clay loam, (5YR 5/4) moist; moderate fine and
medium subangular blocky structure; friable, nonsticky, nonplastic; common fine and very
fine roots; many fine and very fine interstitial pores; 57 percent subangular sandstone rock
fragments; moderately acid; abrupt smooth boundary.
R -- 16 inches; hard red sandstone bedrock.
Rock Outcrop
No soil is associated with this inclusion. Limited by steepness, and surface roughness that
includes loose rock and rock outcrop exposures.
SOIL PROPERTIES AND QUALITIES
Moran
Effective rooting depth: greater than 20 inches.
Drainage class: somewhat excessively.
Depth to seasonal high water table: greater than 6 feet.
Available water capacity: low.
Permeability: moderately rapid.
Runoff: rapid.
Rock outcrop
Landform: cliffs and talus.
Parent material: residuum and colluvium.
Rock type: igneous and metamorphic.
Runoff: rapid and slow.
Teewinot
Effective rooting depth: less than 20 inches.
Drainage class: well.
Depth to seasonal high water table: greater than 6 feet.
Available water capacity: moderate.
Permeability: moderate.
Runoff: rapid.
VEGETATION
Potential natural communities:
Moran: kobresia/golden avens-curly sedge (Koury/Acro-Caru) typical site and tufted
hairgrass/golden avens (Dece/Acro) moist site and kobresia/whiproot clover (Komy/Trda)
exposed site.
Teewinot: kobresia/golden avens-curly sedge (Koury/Acro-Caru) and kobresia/whiproot clover
(Komy/Trda) and golden avens/dwarf clove (Acro/Trna).
Serai stages: dominated by plants of the respective potential natural communities.
Present vegetation: dominated by plants of the respective potential natural communities.
USE AND MANAGEMENT CONSIDERATIONS
Major uses: mining, recreation, scenic vistas, wildlife habitat, and watershed.
Exhibit I —Appendix A I-A-25 March 2024