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published" Order III soil survey that the NRCS has conducted in the area. Detailed map unit <br />descriptions can be found in Attachment 2.04.9-9, Soil Map Unit Descriptions. <br />The 1998 soil survey did not proceed far enough south on the Morgan Property within the <br />permit. However 1988 soil mapping data is available to confirm soils. The small (11.9 acres) <br />area between the 1998 soil survey (black line) and the permit boundary (magenta line) on Map <br />2.04.9-1 does not have soil sample points for depth. <br />Map unit 98A (Begay fine sandy loam) occurs on alluvial terraces formed along Tuttle Draw. <br />Profiles were described to 72 inches. Some areas may have soil deeper than 72 inches and yield a <br />slightly greater amount of salvage material. This unit is considered prime farmland soil as of the <br />2008 NRCS determination. <br />Map unit 98B (Valleycity - rock outcrop complex) occurs on steep mesa side slopes. Hardness of <br />bedrock varies depending on the underlying strata. Coarse fragments range from boulders to <br />cobbles and are residual and colluvial in nature. Valleycity soil has the same physical and <br />chemical properties as those soils similarly named in the survey area. Valleycity is outside the <br />range of characteristics compared to the survey area, in that it occurs in an area of 5 to 8 inches <br />mean annual precipitation. <br />Map unit 98C (Monierco fine sandy loam) occurs on mesa summits, ridges and crests. Hardness <br />of bedrock varies depending on the underlying strata. <br />Map unit 98D (Bowbac - Bowdish complex) has thinner Quaternary eolian deposits than map <br />unit 98E with a mean depth to bedrock of 30 inches. These deposits have developed cambic <br />horizons, weak argillic horizons and secondary accumulations of carbonates. The accumulation <br />of carbonates is reflected in a higher pH in the Bk and Btk horizons. The pH in A, Ap, ABt, Bw <br />and Bt horizons (Lift A) averages 7.7 and in the Bk Btk and C horizons (Lift B ) averages 8.1. <br />Map unit 98E (Darvey-Bari complex) consists of areas of deep Quaternary eolian deposits. <br />These Quaternary deposits overlie Dakota Sandstone and Burro Canyon Formations with depth <br />to bedrock ranging 40 inches to greater than 72 inches with a mean depth of 53 inches. These <br />deposits have stabilized and formed cambic horizons and in some places weak argillic horizons. <br />Additionally, they have developed secondary accumulations of carbonates. The accumulation of <br />carbonates is reflected in a higher pH in the Bk and Btk horizons. The pH in A, Ap, ABt, Bw and <br />Bt horizons (Lift A) averages 7.7 and in the Bk Btk and C horizons (Lift B) averages 8.2. Soil in <br />this map unit is used primarily for irrigated pasture and hay crop. Barx soil is the second <br />component (30 percent) in this map unit. The Darvey and Barx soil types are both prime <br />farmland soil in San Miguel County, Colorado if the soil is irrigated by an adequate and <br />dependable water supply. <br />January 2016 (TR -70) 2.04.9-10 <br />