2008-04-11_PERMIT FILE - M2008022

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Moffat County Area, Colorado loam, loam, or silt loam modified by 15 to 60 percent gravel or cobbles Reaction: moderately alkaline or strongly alkaline Apmay Series Map unit(s): 5 Depth class: very deep Drainage class: somewhat poorly drained Slowest permeability. 0.6 to 2.0 in./hr. (moderate) Landform: flood plains Parent material. alluvium derived from mixed sources Elevation: 6,000 to 7,000 feet (1,829 to 2,134 meters) Slope: 0 to 1 percent Climatic data: Mean annual precipitation: 13 to 16 inches (330 to 406 millimeters) Mean annual air temperature: 42 to 45 degrees F. (5.6 to 7.2 degrees C.) Frost-free period. 75 to 95 days Taxonomic class: Fine-loamy over sandy or sandy- skeletal, mixed Cumulic Haploborolls Typical Pedon Map unit in which located. Apmay clay loam, 0 to 1 . percent slopes Location in the survey area: about 200 feet west and 700 feet north of the southeast corner of sec. 34, T. 7 N., R. 90 W. A1-0 to 10 inches; very dark grayish brown (10YR 3/2) clay loam, very dark brown (1OYR 2/2) moist; strong fine granular and fine subangular blocky .structure; hard, firm, sticky and plastic; mildly alkaline; clear smooth boundary. A2-10 to 17 inches; grayish brown (1OYR 5/2) clay loam, very dark grayish brown (10YR 3/2) moist; moderate medium and fine subangular blocky structure; hard, firm, sticky and plastic; mildly alkaline; gradual smooth boundary. Bw1-17 to 27 inches; brown (10YR 5/3) clay loam stratified with a 1 inch thick. layer of pale brown (1 OYR 6/3) loam, dark brown (1 OYR 3/3) moist; moderate medium subangular blocky structure; hard, friable, sticky and plastic; mildly alkaline; clear smooth boundary. Bw2-27 to 30 inches; pale brown (1 OYR 6/3) loam, brown (10YR 4/3) moist; common fine prominent. strong brown (7.5YR 5/6) mottles; weak medium subangular blocky structure; hard, friable, sticky and plastic; mildly alkaline; abrupt smooth boundary. 2C-30 to 60 inches; light yellowish brown (10YR 6/4) extremely gravelly sand, yellowish brown 283 (10YR 5/4) moist; single grained; loose, nonsticky and nonplastic; 60 percent gravel, 10 percent cobbles; mildly alkaline. Range in Characteristics Depth to a seasonal high water table: 2 to 3 feet from April through June Thickness of the mollic epipedon: 16 to 25 inches Note: Some pedons may contain thin discontinuous horizons, which are slightly effervescent. Bw and C horizons: Texture: loam, sandy clay loam, or clay loam; thin layers less than 2 inches thick of sandy loam sometimes are present Reaction: neutral or mildly alkaline Note: Bw horizons are absent in some pedons. 2C horizon: Texture: very gravelly sand or extremely gravelly sand; a layer of sand 2 to 10 inches thick may overlie these textures Depth to the 2C horizon:20 to 40 inches Arches Series Map unit(s): 226 Depth class: very shallow to shallow Drainage class: excessively drained Slowest permeability. 6.0 to 20 in./hr. (rapid) Landform: hills Position on /andform: footslopes, toeslopes Parent material: eolian deposits derived from sandstone Elevation: 5,100 to 6,000 feet (1,554 to 1,829 meters) Slope: 5 to 40 percent Climatic data: Mean annual precipitation: 8 to 12 inches (203 to 305 millimeters) Mean annual air temperature: 45 to 49 degrees F. (7.2 to 9.5 degrees C.) Frost-free period. 110 to 140 days Taxonomic class: Mixed, mesic Lithic Torripsamments Typical Pedon Map unit in which located. Arches-Mespun-Rock outcrop complex, 4 to 40 percent slopes, from the Dinosaur National Monument Soil Survey Location in the Dinosaur National Monument-survey area: about 1,200 feet east and 800 feet south of the northwest corner of section 28, T. 3 S., R. 25 E., SLBM latitude 40 degrees, 32 minutes, 5 seconds N. and longitude 109 degrees, 7 minutes, 18 seconds W.