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374 <br />moist; weak medium aranular structure: soft. verv <br />friable, slightly sticky and slightly plastic; neutral; <br />clear wavy boundary. <br />A2-7 to 24 inches; grayish brown (10YR 5/2) fine <br />sandy loam, very dark grayish brown (10YR 3/2) <br />moisi; weak medium granular structure; sott, very <br />friable, slightly sticky and slightly plastic; 15 <br />percent fine gravel; neutral; clear wavy boundary. <br />Bw-24 to 32 inches; grayish brown (10YR 5/2) <br />sandy clay loam, very dark grayish brown (10YR <br />3/2) moist; weak medium subangular blocky <br />structure; soft, friable, slightly sticky and slightly <br />plastic; neutral; clear wavy boundary. <br />C-32 to 60 inches; pale brown (10YR 6/3) sandy <br />clay loam, brown (10YR 4/3) moist; massive; <br />slightly hard, friable, slightly sticky and slightly <br />plastic; neutral. <br />Range in Characteristics <br />Particle-size control section (weighted average): <br />Rock fragment content. 0 to 15 percent <br />Thickness of the mollic epipedon: 16 to 40 inches <br />Note: This soil is outside the range of the Lamphier <br />Series due to the 10YR hue in the Bw and C <br />horizons. <br />B horizon: <br />Texture: loam or sandy clay loam <br />C horizon: <br />Texture: loam or sandy clay loam <br />CILander Series <br />p unit(s): 118 <br />p c ass: very deep <br />Drainage class: somewhat poorly drained <br />Slowest permeability. 0.2 to 0.6 in./hr. (moderately <br />slow) <br />Landform: flood plains <br />Parent material. alluvium derived from mixed sources <br />Elevation: 6,000 to 7,000 feet (1,829 to 2,134 meters) <br />Slope: 0 to 3 percent <br />Climatic data: <br />Mean annual precipitation: 12 to 16 inches (305 <br />to 406 millimeters) <br />Mean annual air temperature: 42 to 45 degrees F. <br />(5.6 to 7.2 degrees C.) <br />Frost-free period: 75 to 95 days <br />Taxonomic class: Fine-loamy, mixed Fluvaquentic <br />Haploborolls <br />Typical Pedon <br />Anil RlInJPv <br />Location in the survev area: about 2.500 feet east <br />and 200 feet north of the southwest corner of sec. <br />17, T. 6 N., R. 91 W. <br />Al-0 to 5 inches; dark grayish brown (10YR 4/2) <br />loam, very dark brown (10YR 2/2) moist; weak <br />medium granular structure; slightly hard, very <br />friable, slightly sticky and slightly plastic; neutral, <br />clear smooth boundary. <br />A2-5 to 10 inches; dark grayish brown (10YR 4/2) <br />loam, very dark grayish brown (10YR 3/2) moist, <br />moderate medium granular structure; slightly <br />hard, very friable, slightly sticky and slightly <br />plastic; neutral; abrupt smooth boundary. <br />Bw1-10 to 14 inches; brown_(10YR 4/3) sandy clay <br />loam, very dark grayish brown (10YR 3/2) moist; <br />weak medium subangular blocky structure; hard, <br />friable, slightly sticky and slightly plastic; mildly <br />alkaline; abrupt smooth boundary. <br />Bw2-14 to 20 inches; brown (10YR 5/3) fine sandy <br />loam, brown (10YR 4/3) moist; weak medium <br />subangular blocky structure; hard, friable, slightly <br />sticky and nonplastic; mildly alkaline; abrupt <br />smooth boundary. <br />Ab-20 to 36 inches; very dark grayish brown (10YR <br />3/2) clay loam containing a thin layer of brown <br />(10YR 5/3) sandy clay loam, very dark brown <br />(10YR 2/2) moist; weak medium subangular <br />blocky structure; hard, firm, sticky and plastic; <br />mildly alkaline; clear smooth boundary. <br />Cg-36 to 44 inches; gray (10YR 5/1) clay loam, dark <br />gray (10YR 4/1) moist; common fine distinct <br />strong brown (7.5YR 5/8) mottles; massive; hard, <br />firm, sticky and plastic; strongly effervescent; <br />moderately alkaline; abrupt smooth boundary. <br />2C1-44 to 55 inches; light yellowish brown (10YR <br />6/4) fine sand, yellowish brown (10YR 5/6) moist; <br />single grained; loose, nonsticky and nonplastic; <br />mildly alkaline; abrupt smooth boundary. <br />2C2-55 to 60 inches; brownish yellow (10YR 6/6) <br />extremely gravelly sand, yellowish brown (10YR <br />5/6) moist; single grained; loose, nonsticky and <br />nonplastic; 50 percent gravel, 10 percent cobbles <br />mildly alkaline. <br />Range in Characteristics <br />Thickness of the mollic epipedon: 10 to 15 inches <br />Depth to a seasonal high water table: 21/2 to 3'/2 feet <br />from April through June <br />Note: Horizons that effervesce are common, but <br />occur at random depths and are discontinuous <br />horizontally and vertically. <br />by <br />Map unit in which located. Lander loam, 0 to 3 Ab and C horizons: <br />percent slopes Texture: stratified layers of loam, sandy clay loam,