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BOZEMAN SILT LOAM - (4) Taxonomic Class: Fine-silty, mixed Argic Pachic Cryoborolls. A 0-8" -- Very dark grayish brown (lOYR 3/2, moist) silt loam; moderate coarse granules; friable, slightly sticky, plastic; many fine and few medium and coarse roots; medium acid, pH 5.8; clear smooth boundary. Btl 8-14" -- Dark brown (lOYR 3/3, moist) silt loam; strong medium blocky structure; firm, sticky, plastic; thick waxy clay films on ped faces and in root channels and pores; few medium and coarse roots and common fine roots; medium acid, pH 5.7; gradual smooth boundary. Bt2 14-22" -- Dark brown (lOYR 3/3, moist) silty clay loam; strong coarse blocky structure; firm, sticky, plastic; thick waxy clay films on ped faces and in root channels and pores; many fine roots; slightly acid, pH 6.5; gradual smooth boundary. 653 22-33" -- Dark brown (lOYR 3/3, moist) silty clay; strong coarse blocky structure; very firm, very sticky, very plastic; thick waxy clay film on ped faces and in pores and root channels; many fine and few medium roots; mildly alkaline, pH 1.5; diffuse smooth boundary. Cy 33-51" -- Dark yellowish brown (lOYR 3/4) silty clay; massive; very firm, very sticky, very plastic; few fine roots; slightly effervescent; slightly alkaline, pH 7.8; gradual smooth boundary. C 51-60" -- Yellowish brown (lOYR 5/4) and grayish brown (2.5Y 5/2) clay loam; massive; firm, sticky, very plastic; few fine roots; slightly effervescent; moderately alkaline, pH 8.0. Sampling Location (Typical Pedon): Twentymile Coal Company's Foidel Creek permit area, Sample site #3. SW 1/4, SW 1/4, SW 1/4, Section 16, T5N, R86W, Routt County, Colorado. Range in Characteristics: Thickness of the mollic epipedon ranges from 16 to 40 inches. Clay content in the control section averages less than 35 percent. Drainage and Permeability: Well drained; slaw permeability. Depth to Water Table: Greater than 114 inches on August 1, 1984. • Ex. 15-6