Laserfiche WebLink
west Elk Mime <br />movement is difficult to predict, howe~°er, and usually is triggered by some changes in groundcwater <br />movement. <br />It should be emphasized that the following soil units have the potential for mass movement. <br />lvtoreover, not all areas mapped as a given unit have the identical potential. Thus unit 31 on a five <br />per+rent slope may be very stable whereas the same unit on a 30 percent slope may have a <br />considerable potential to slide. <br />From the standpoint of soil character alone, the soils of units 5,17, 30, X30, 31,X31, and X32 have <br />the greatest potential for mass movement Units 30 and X30 have the lowest potentia] and have <br />been listed primarily because in some landscapes they tend to be Sher textured in the lower solum <br />and C horizon than would be anticipated by their family classification which is based on a weighted <br />average of the B2t horizon <br />Sot! Prodrrctivi[v <br />In their natural undisturbed state, most of the soils of the area are suitable for growing natural <br />vegetation Natural fertility decreases with depth in most soils of the area and is not adequate for <br />vigorous growth in the lower solum and C horizons. Even though natural fertility seems to be <br />adequate in the upper horizons of many soils, it is believed that some supplemental fertilization <br />should be applied to all seedbeds to insure the best possible growth during early states of <br />reclamation <br />. The soils of the area have moderate W strong grades of natural soil structure. The preservation of as <br />much of the soils' original structure as is possible during the disturbance, transportation and <br />redistribution of these earths is considered an important management goal in all of the soils and is <br />extremely important in the use of some of the finer texnn~ed ones. <br />The productivity and capability of each mapping unit to support a variety of uses can be related <br />directly to that soil's suitability as a topsoil material. Table 23 and the mapping unit descriptions <br />provide such information for each unit <br />Ouantifalive Soil Malysis <br />Table 23 is a breakdown of the soil occurring on the survey area and an assessment of their <br />topsoiling suitability, stripping depth, and general limitations. Average topsoil stripping depths are <br />based on the depth of material arrmean'ng suitable for topsoiling material when holes were augered <br />during maPP~S- <br />20i/35 /N4 PROS; &94 7871; Revised./io~. /995 PR06; .Nmch 2606 PR/0 <br />