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<br />As the pipeline corridor exits Hatch Gulch and progresses east toward the Greasewood <br />Compressor Station, it intersects four different soil types: Rentsac channery loam, <br />Yamac loam, Piceance fine sandy loam, and the Irigul-Parachute complex (SCS 1982}. <br />Rentsac channery loam and Yamac loam are described above. Piceance fine sandy loam <br />is found on uplands and broad ridgetops. This soil unit is moderately deep and is well <br />drained, with moderate permeability and moderately low available water capacity. <br />Slopes are 5 to 15 percent. The water erosion hazard is moderate to high, and the wind <br />erosion hazard is high. The potential for soil erosion is the main limitation for this soil. <br />The main limitation for seeding is low precipitation in summer (SCS 1982). Typical <br />topsoils are 4 inches deep, with an additional 18 inches of subsoil. The Irigul-Parachute <br />complex is located on ridges and mountainsides. Soils of this complex are shallow to <br />moderately deep loams that are well drained with moderate permeability. Slopes are 5 <br />to 30 percent. Water erosion hazard is slight to very high, and wind erosion hazard is <br />very slight to none. The main limitations are slope, water erosion, and shallow rooting <br />depth. The main limitations for seeding are slope, shallow rooting depth, and a short <br />growing season (SCS 1982). Irigul topsoils are typically 5 inches thick; Parachute <br />topsoils are typically 4 inches thick, with an additional ZS inches of subsoil. These soils <br />are considered fragile. Temporary disturbance of these soils for pipeline construction, <br />including the occurrence of Rentsac soils identified below, is estimated at about 42 <br />acres. <br />The pipeline corridor enters Collins Gulch in T2S, R96W, Section 16, where it re-enters <br />Glendive fine sandy loam (SCS 1982). The pipeline remains in this soil type along <br />Collins Gulch until it crosses Piceance Creek. <br />As the pipeline corridor continues south from Piceance Creek, it crosses a hillside with <br />Rentsac channery loam as the dominant soil type. It then enters Stewart Gulch and re- <br />enters the Glendive fine sandy loam soil type where it remains for approximately 2 <br />miles. The pipeline corridor then proceeds south along the ridgetop between the <br />Middle Fork and East Fork of Stewart Gulch (Barnes Ridge) where the dominant soil is <br />the Redcreek-Rentsac complex (SCS 1982). Temporary disturbance of the Redcreek- <br />Rentsac complex for pipeline construction is estimated at about 24 acres. <br />The pipeline corridor then crosses one drainage to the east where it remains on top of a <br />ridge all the way to Davis Point, in this section being situated in Parachute-Rhone <br />loams. The Parachute-Rhone loams are on ridgecrests and mountainsides. These soils <br />are moderately deep to deep and are well drained with moderate permeability and low <br />to high available water capacity. Parachute loams, which make up 55 percent of this <br />complex, typically have topsoils 5 inches thick, with an additional 24 inches of subsoil. <br />Rhone loams, which make up 35 percent of this complex, typically have 28 inches of <br />topsoil and no subsoil. Slopes are 5 to 30 percent. Water erosion hazard is slight to <br />moderate, and wind erosion hazard is very slight to slight. The Parachute soils, at <br />lower depths, contain a high percentage of coarse fragments (SCS 1985). Limiting <br />factors include slope and low available water capacity, and a short growing season may <br />I-5 <br />