2024-05-17_REVISION - M1977493 (3)

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Permit M-1977-493—Climax Mine Technical Revision 37 (TR-37) 2Cgl -- 35 to 40 inches; dark grayish brown (2.5Y 4/2)silty clay loam; few fine distinct brown (7.5YR 5/4) mottles; massive; hard, firm, sticky, plastic; common fine roots; medium acid (pH 5.6); gradual wavy boundary. 2Cg2 --40 to 45 inches; dark grayish brown (2.5Y 4/2)sandy clay loam; massive, hard, firm, slightly sticky, slightly plastic; common fine roots; medium acid (pH 6.0); gradual wavy boundary. Cr--45 to 60 inches; weathered gneiss and schist bedrock. Soil depth to bedrock is greater than 40 inches. The reaction of the soil is very strongly acid to neutral. These soils consist of various layers of fibric and hemic materials (decomposing organic matter)with occaisional thin layers of mineral soil. Cryaquolls Location: Throughout the survey area. General Landforms/Geomorphology:Alluvial and glaciated valleys - moderately steep to very gentle valleys. Inclusions of moderately steep to steep, structural controlled slopes with colluvial deposition in narrow and confined valleys. Parent material:Alluvium, glacial till and some colluvial deposition weathered from mixed rock sources. Geologic symbol: Qa, Qd. Elevation range: 10,000 to 11,800 feet. Aspect: All. Climatic zone: Subalpine. Mean annual precipitation: 25 to 40 inches. Mean annual air temperature: 36°F. to 40°F. Average annual snowfall: 300 to 400 inches. Taxonomic Class: loamy-skeletal, mixed Typic Cryaquolls Reference Pedon: A representative pedon of this soil occurs in map unit 100A supporting Geyers willow/marsh marigold wetland community type on a 4 percent west facing slope at 11,600 feet elevation located in the NW 1/4, NE 1/4, sec. 4, T. 8 S., R. 79 W., in Eagle County, Colorado. Al --0 to 8 inches; dark brown (10YR 4/1)silt loam, black (10YR 2/1) moist, moderate medium subangular blocky structure; friable, nonsticky, nonplastic; many fine and very fine and common medium roots; common fine interstitial pores; neutral; clear smooth boundary. Cg1 --8 to 16 inches; gray (10YR 6/1) silty clay loam, dark gray (10YR 4/1) moist; massive structure parting to moderate medium and fine subangular blocky; many very fine roots; few fine tubular pores; 15 percent rock fragments; slightly acid, clear wavy boundary. Cg2 --16 to 23 inches; brown (10YR 6/2)clay, dark brown (10YR 4/2) moist; weak medium subangular blocky structure parting to moderate fine granular; very friable, nonsticky, nonplastic; many very fine and common fine and medium roots; many fine tubular pores; 30 percent rock fragments; slightly acid; clear smooth boundary. IICg3 --23 to 30 inches; yellowish brown (10YR 7/2)very gravelly coarse sandy loam, dark yellowish brown (10YR 5/2) moist; massive parting to moderate fine subangular blocky structure; firm, slightly sticky, slightly plastic; few fine tubular pores; 40 percent round rock fragments; neutral; clear smooth boundary. IICg4 --30 to 45 inches; light greenish gray (5BG 7/1)very gravelly coarse sandy clay loam, massive; firm, slightly sticky, slightly plastic; few fine tubular pores; 40 percent round rock fragments; neutral. Exhibit I —Appendix A I-A-55 March 2024