2024-05-17_REVISION - M1977493 (3)

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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) Map Unit: 932B Handran - Eyre families - Rubble land complex, 5 to 40 percent slopes. Ecological Land Unit: 93213—grasses, sedges and forbs on alpine, nearly level to moderately steep mountain slopes. MAP UNIT SETTINGS Location: alpine areas where sedimentary rocks predominate. General Landforms/Geomorphology: nearly level to moderately steep mountain slopes. Parent material: residuum and colluvium. Geologic symbol: Pmb, PPm, TrPs. Elevation range: 11,600 to 13,500 feet. Aspect: all. Climatic zone: alpine. Mean annual precipitation: 30 to 50 inches. Mean annual air temperature: 34°F. to 38°F. Average annual snowfall: 300 to 500 inches. COMPOSITION 45 percent Handran and similar soils. 20 percent Eyre and similar soils. 20 percent Rubble land. Contrasting inclusions 5 percent Cryochrepts on exposed convex slopes. TYPICAL PROFILES: Handran A representative pedon of this soil occurs on a 58 percent south southwest facing slope at 8,830 feet elevation located in the SW 1/4, NW 1/4, sec. 9, T. 4 S., R. 78 W., in Summit County, Colorado supporting a mountain big sagebrush/Idaho fescue plant association. A-- 0 to 10 inches; (10YR 4/2)stony loam, (10YR 2/2) moist; moderate medium subangular blocky structure parting to weak fine granular; very friable; nonsticky, nonplastic; many fine and very fine and common medium roots; many fine interstitial pores; 40 percent rock fragments; neutral; clear wavy boundary. Bwl - 10 to 21 inches; (10YR 6/3) extremely stony loam, (10YR 4/3) moist; moderate fine subangular blocky structure; friable, nonsticky, nonplastic; common fine and very fine and few medium roots; common fine and very fine and few medium roots; few fine tubular and common fine interstitial pores; 60 percent rock fragments; neutral; gradual wavy boundary. Bw2--21 to 41 inches; pale brown (10YR 6/3)extremely stony sandy clay loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; friable, slightly sticky, nonplastic; few fine tubular and common fine interstitial pores; 60 percent rock fragments; slightly acid; gradual wavy boundary. Bw3 --41 to 60 inches; (10YR 6/4) extremely stony coarse sandy clay loam, (10YR 5/4) moist; weak and moderate fine subangular blocky structure; friable, slightly sticky, nonplastic; few very fine and fine roots; many fine interstitial pores; 60 percent rock fragments; neutral. Exhibit I —Appendix A I-A-32 March 2024