2024-05-17_REVISION - M1977493 (3)

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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) Eyre A representative pedon of this soil occurs on a 75 percent west southwest facing back slope at 9,100 feet elevation located in the SW 1/4, SE 1/4, sec. 23 , T. 4 S., R. 82 W., in Eagle County, Colorado supporting a aspen/Thurber fescue plant association. Oi -- 1 to 0 inches; undecomposed grass litter; abrupt clear boundary. Al -- 0 to 5 inches; gravelly loam, dark reddish brown (5YR 3/2) moist; weak fine subangular blocky structure parting to weak fine granular; very friable, nonsticky, nonplastic; many very fine and fine roots; many fine interstitial pores; 18 percent sandstone rock fragments; slightly alkaline; clear smooth boundary. A2 -- 5 to 12 inches; very gravelly loam, dark reddish brown (5YR 3/3) moist; weak fine subangular blocky structure parting to weak fine granular; very friable, slightly sticky, nonplastic; common very fine and many fine roots; many fine interstitial pores; 40 percent sandstone rock fragments; neutral; clear wavy boundary. Bw-- 12 to 17 inches; extremely cobbly fine sandy clay loam, red (2.5YR 4/6) moist; weak fine and medium subangular blocky structure; very friable, slightly sticky, nonplastic; few very fine and common fine roots; many very fine interstitial pores; 70 percent sandstone rock fragments; neutral; abrupt smooth boundary. R-- 17 inches; hard red sandstone Rubble land No soil is associated with this inclusion. Limited by steepness, and surface roughness that includes loose rock and rock outcrop exposures. Typic Cryochrepts Oi -- 1.5 to 0 inches -spruce, fir and pine litter and duff. Al 1 -- 0 to 7 inches - light brown, very cobbly loam. Al2 -- 7 to 19 inches - light brown, extremely cobbly fine sandy loam. B21 -- 19 to 30 inches - light brown, extremely gravelly sandy loam. B22 -- 30 to 39 inches - red, extremely gravelly sandy loam. B23 -- 39 to 57 inches - red, extremely cobbly sandy loam. C -- 57 to 72 inches - red, extremely cobbly sandy clay loam. No representative pedon is available. A general description of a Typic Cryochrept is contained below. Oi -- 1 to 0 inches; undecomposed spruce, fir and pine litter and duff; abrupt clear boundary. Al 1 —0 to 7 inches; dark grayish brown (10YR 4/2) cobbly sandy loam, very dark brown (10YR 2/2) moist; weak fine granular structure; slightly hard (dry), very friable (moist), nonsticky and slightly plastic (wet); many fine roots; 25 percent cobbles and stones; slightly acid; abrupt wavy boundary. Al —7 to 19 inches; brown (10YR 5/3) cobbly fine sandy loam, dark brown (10YR 4/3) moist; weak medium subangular blocky structure; friable (moist), slightly sticky and non-plastic (wet); many fine and medium roots; 20 percent gravel and cobbles; medium acid; gradual wavy boundary. B21 19 to 30 inches; pale brown (10YR 6/3)cobbly sandy loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; very friable (moist), slightly sticky and non-plastic Exhibit I —Appendix A I-A-33 March 2024