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Mapping Unit SSA <br />• Silas loam <br />Silas loam is a deep, well-drained soil in nearly level to strongly <br />sloping valley floors. It formed in alluvium of mixed sources. The <br />only tract of this soil on the proposed permit area is along Middle <br />Creek east of the 16284 Lease Area. The area there is currently being <br />used as hayland. <br />Small areas having 15 to 35 percent by volume cobbles and stones occur. <br />Typically the surface layer is a very dark grayish brown sandy loam <br />about 14 inches thick. The underlying material is grayish brown sandy <br />clay loam to 60 inches or more. Depth to watertable is 40 to 50 inches. <br />U <br />Permeability is moderate. Available water capacity is moderate. Effec- <br />tive rooting depth is 60 inches or more. Surface runoff is slow and <br />erosion hazard is slight. <br />• <br />-12- <br />