2017-02-03_PERMIT FILE - C1980004 (25)

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• Map Unit ESC:East Salt Creek • Map Unit DL: Disturbed Land • Soil Substratum samples MC1C and MC2C 3.1 Map Unit H: Cameo fine sandy loam, 1 to 4% slopes Cameo fine sandy loam (Map Unit H) is the dominant soil on the project study area and is a very deep (>60 inches to bedrock), welldrained soil that is mapped on terraces of East Salt Creek and adjacent gently sloping alluvial fans.Cameo fine sandy loam is developing in calcareous, somewhat stratified, local alluvium from mixed sources. Map Unit H is dominated by greasewood vegetation but includes mixed grasses and some areas with silver sagebrush and big sagebrush. Small inclusions of "Cameo taxadjunct" are present on the slightly higher and older parts of the map unit area. The Cameo soil on the project area is the same as Cameo fine sandy loam in Map Unit 15 as mapped by NRCS in the "Soil Survey of Douglas Plateau Area, Colorado, Parts of Garfield and Mesa Counties" (Alstatt, 2003). In fact, the NRCS "Type Location" for the Cameo soil series is located less than one mile to the southwest near the junction of Munger Creek with East Salt Creek near the center of Section 29, T.7S., R.102W. Because of the close proximity to the Cameo "Type Location", this is one situation where the NRCS Order 3 delineation of Cameo on the project study area is very similar to the more detailed Order 1 delineation of the current survey, except that delineations of Map Unit I and ESC were mapped out within the larger area of Map Unit I (Cameo fine sandy loam). Cameo fine sandy loam was fully described and sampled at threerepresentative sites in the project area:MC21, MC23, and MC25.Soil inclusion sample site MC24, Cameo taxadjunct, was alsodescribed. In a typical profile, Cameo has a very pale brown fine sandy loam "A" horizon surface layer about 4 inches thick. The underlying "C" horizon substratum material to a depth of 60 inches or more is light yellowish brown, stratified sandy loam to Ioam.Cameo fine sandy loam has high available water holding capacity and moderately rapid permeability. The effective rooting depth is 40 inches or more. Runoff is low,the hazard of water erosion is slight to moderate, the hazard of wind erosion is moderate to severe, and the map unit is subject to rare flooding for brief periods in its lower areas. The capability class is 3e, irrigated, and 6e, nonirrigated. Cameo is in the Saltdesert Overflow ecological site (Range Site) #407. Cameo is an established soil series of moderate extent mapped in Western Colorado, LLRD, MLRA 34.Cameo is classified as a "Coarse -loamy, mixed, superactive, calcareous, mesic Ustic Torrifluvent". The official NRCS soil series description for Cameo, dated July 1998, is on file.