2024-05-17_REVISION - M1977493 (3)

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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) Map Unit: 93OA Cryoborolls -Cryaquolls - Borohemists complex, 0 to 25 percent slopes. Ecological Land Unit: 930A—willows, grasses, grasses and forbs on alpine, valley bottoms. MAP UNIT SETTINGS Location: alpine areas where sedimentary rocks predominate. General Landforms/Geomorphology: valley bottoms. Parent material:alluvium. Geologic symbol: Qa. Elevation range: 11,600 to 13,000 feet. Aspect: all. Climatic zone: alpine. Mean annual precipitation: 12 to 16 inches. Mean annual air temperature: 48°F. to 52°F. Average annual snowfall: 50 to 100 inches. COMPOSITION 40 percent Cryoborolls and similar soils. 30 percent Cryaquolls and similar soils. 20 percent Borohemists and similar soils. Contrasting inclusions 10 percent Eyre family on residuum. TYPICAL PROFILES: Cryoborolls A representative pedon of this soil occurs on a 48 percent south southwest facing slope at 10,850 feet elevation located in SE 1/4, SW 1/4, sec. 22, T. 11 S., R. 87 W., in Gunnison County, Colorado supporting a Thurber fescue, ligusticum, American vetch community. Al -- 0 to 2 inches; grayish brown (10YR 5/2) channery silt loam, very dark grayish brown (10YR 3/2) moist; weak coarse platy structure parting to moderate fine and medium granular; very friable, nonsticky, nonplastic; common very fine, few fine and medium roots; many fine and medium interstitial pores; 20 percent flat siltstone rock fragments; slightly acid; clear smooth boundary. A2 --2 to 12 inches; brown (10YR 5/3)silt loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; very friable, slightly sticky, nonplastic; many very fine and common fine and medium roots; common fine and medium interstitial pores; 10 percent flat siltstone rock fragments; neutral; gradual smooth boundary. E -- 12 to 20 inches; pale brown (10YR 6/3) silt loam, brown (10YR 4/3) moist; weak fine and medium subangular blocky structure; very friable, slightly sticky, nonplastic; common fine and very fine and few medium roots; common fine and medium interstitial pores; 10 percent flat siltstone rock fragments; slightly acid; clear wavy boundary. Bw--20 to 47 inches; pale brown (10YR 6/3) channery silt loam, dark grayish brown (2.5Y 4/2) moist; moderate medium subangular blocky structure; very friable, slightly sticky, nonplastic; few fine, very fine and medium roots; common fine and medium interstitial pores; 15 percent flat siltstone rock fragments; neutral; clear smooth boundary. C --47 to 60 inches; grayish brown (2.5Y 5/2) channery silt loam, dark grayish brown (2.5Y 4/2) moist; massive; friable, nonsticky, nonplastic; 25 percent flat siltstone rock fragments; neutral. Exhibit I —Appendix A I-A-27 March 2024