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G . Soils Resource Information <br /> 1 . General description <br /> In general, the soils of the area are a sandy loam <br /> type of soil overlying Mancos shale and/or sandstone out- <br /> crops . The soils are quite uniform in texture and class <br /> throughout the basin with only minor localized variations . <br /> They appear to have been formed from alluvial and windblown <br /> deposits of weathered sandstone over Mancos shale from <br /> surrounding sandstone uplifts . <br /> Where the soils have been undisturbed , the organic <br /> matter content is relatively high due to the lush vegetation <br /> litter . The "A" horizons of the soils are shallow on the <br /> steeper slopes of the area and range to quite deep on <br /> flatter slopes and in and near stream beds . The "B" horizons <br /> are generally sandstone fragment soils over a layer of <br /> Mancos shale. In some cases , the fragments are quite large . <br /> In several areas the Mancos shale has been exposed and has <br /> been weathered into a silt loam type of soil . It remains a <br /> relatively impermeable rock layer where it has not been <br /> exposed . <br /> The abundance of vegetation indicates at least a <br /> good quality soil with respect to toxic substances and <br /> elements . <br /> Soils in the permit area have been inventoried , <br /> tested , and analysed by several soils consulting companies <br /> commencing in 1979 . See Appendices III-F-1 through 5 to <br /> 1 <br />