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Section 816.22 (c) Continued. Keir'Nditfi"Area Within the Kerr North Area to be disturbed there are areas to which this subsection applies. The first area concerned is that classi- fied as Cryorthenta and identified ae unit R60. Soil handling in these areas is detailed in Section 816.22 (b) above, and further explained below. The Cryorthenta (R60) area within the Pit D1 area is similar in soil chemical and physical properties to the adjoining Pit S1 soils to be salvaged, and will consequently be salvaged to a depth of 6 inches. Details of the chemical and physical analysis are found in Table 42, Soil Chemical and Physical Properties Lab Analysis Kerr North Area. Emphasis concerning these parameters was placed on the texture class of the soils, and in particular the clay percentage. As outlined in Wyoming DEQ Guideline No. 3 and in numerous studies, • texture type is important in moisture movement and retention, com- paction when handling, erosion potential, plant root penetration, and other features. The Coalmont (X73) soils within Pit I!1 were found to be extremely clayey and poorly developed. Because of these features, only the top 6-inch layer of soil material will be stripped from this area. Table 42, Soil Chemical and Physical Properties Lab Analysis Kerr North Area, exemplifies this fact, as does Exhibit 26, Soil Profile Descriptions. The Cryorthenta found in the area within Pit ~l2 are significantly contrasting from adjacent soils in the Pit l~2 area to be salvaged, such that none of this material will be salvaged. Again,• the textural class is the determining factor. 'In this Pit the surface soil has a clay content of 54Z within the Cryorthent area, and an extremely gravelly surface. Adjacent soil areas within Pit 82 have 26 to 29 percent clay in the surface horizons and no gravel on the surface. 816-11