2024-05-17_REVISION - M1977493 (3)

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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) and many very fine pores; very strongly acid; 25 percent pebbles, 25 percent cobbles; gradual smooth boundary Bt/E--20 to 31 inches; pink (7.5YR 7/4) extremely cobbly sandy clay loam, yellowish red (7.5YR 4/6) crushed moist; moderate fine subangular blocky structure; friable, slightly sticky, slightly plastic; few faint clay films on faces of peds; few very fine and common fine and medium roots; few coarse and common fine and medium pores; very strongly acid; 30 percent cobbles, 35 percent pebbles, 5 percent stones; gradual smooth boundary. Bt1 --31 to 40 inches; pink (7.5YR 7/3) extremely cobbly clay loam, reddish brown (5YR 5/4) crushed moist; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; common faint clay films on faces of peds; common fine and medium roots; common very fine and fine and common medium and coarse pores; very strongly acid; 25 percent pebbles, 40 percent cobbles, 5 percent stones; clear smooth boundary. Bt2 --40 to 60 inches; pink (5YR 7/3) very cobbly clay loam, yellowish red (5YR 5/6)crushed moist; moderate medium subangular blocky structure; firm, sticky, plastic; common distinct clay films on faces of peds and in pore; common medium roots; common very fine and fine pores; strongly acid; 25 percent cobbles, 30 percent pebbles. Hechtman A representative pedon of this soil occurs in the Lincoln Creek watershed; on a 53 percent southwest facing slope at 10,000 feet elevation located in the SW 1/4, NW 1/4, sec. , T. 0 S., R. 80 W., in Pitkin County, Colorado, supporting a lodgepole pine/grouse whortleberry plant association. Oi -- 1.5 to 0.5 inches: undecomposed conifer needle and twig litter. Oe --0.5 to 0 inches; partially decomposed conifer needle and twig litter. A-- 0 to 0.5 inches; dark grayish brown (10YR 4/2) cobbly loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; very friable, nonsticky, nonplastic; few very fine roots; many fine interstitial pores; 25 percent angular gneiss rock fragments; slightly acid; clear smooth boundary. E -- 0.5 to 6 inches; light yellowish brown (10YR 6/4)cobbly loam, (10YR 4/4) moist; weak fine granular structure; very friable, nonsticky, nonplastic; many fine and medium roots; many fine and medium interstitial pores; 30 percent angular gneiss rock fragments; moderately acid; clear wavy boundary. Bw1 -- 6 to 12 inches; (10YR )very cobbly sandy loam (10YR 4/4) moist; weak fine granular structure; loose, nonsticky, nonplastic; common fine, very fine and medium roots; many fine and medium interstitial pores; 40 percent angular gneiss rock fragments; moderately acid; clear wavy boundary. Bw2 --12 to 15 inches; (10YR )very cobbly sandy loam, (10YR 4/4) moist; weak medium subangular blocky structure; very friable, nonsticky, nonplastic; common very fine and few fine and medium roots; many fine and medium interstitial pores; 40 percent angular gneiss rock fragments; moderately acid; abrupt wavy boundary. R- 15 inches; very hard gneiss bedrock. Exhibit I —Appendix A I-A-10 March 2024