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2.U SOIL INVENTORY • <br />L.1 Soil Series Descriptions <br />2.1.1 Burnette Loam <br />This soil is a deep, well drained, slowly to moderately permeable <br />soil formed in colluvium derived from shale. It occurs on broad <br />uplands and mountain sideslopes on slopes of 15 to 6U percent. The <br />native vegetation is serviceberry, big saye, and yrasses. The <br />available water hoidiny capacity is moderate to high. <br />In a typical profile, the surface layer is black, loam to clay <br />loam about 6 incnes thick. The subsoil is dark yrey brown to brown, <br />clay loam to clay about 36 inches thick. The substratum is yellowish <br />brown to brown, clay to clay loam about 18 inches thick or more. <br />Depth to bedrock is greater than 60 inches. The series is within the <br />tine, montmorillonitic family of Argic Pachic Cryoborolis. <br />The mollic epipedon ranyes from lti to 44 inches thick and <br />averages 21 inches. The quality of the lift 1 material is mostly <br />good. The lift 2 material tends to be somewhat fine textured so it is <br />rated fair or marginal, in a few locations. <br />This series occurs in map units JBB, JBC, NBD, and RBD. It was <br />sampled in typical pedon number 4 and in composite sample numbers <br />96/188 and 159/63. Average lift 1 thickness is 21 inches, average <br />lift "L thickness is 39+ inches, for an average total salvayable <br />thickness for the series of 60+ inches. <br />2.1.2 Castner Cobbly Loam <br />This soil is a shallow, well drained, moderately to highly <br />permeable soil formed in residuum derived from sandstone. It occurs <br />on narrow rolling ridges and mountain sideslopes on slopes of 5 to 50 <br />percent. The native vegetation is big sage, serviceberry and <br />oakbrush. The available water holding capacity is low. <br />In a typical profile, the surface layer is very dark grayish <br />brown, cobbly loam to sandy loam about 2 inches thick. The subsoil is <br />dark brown to dark yellowish brown, cobbly to very cobbly or channery <br />loam to sandy loam about 12 inches thick. Tlie substratum is hard <br />flaggy sandstone at a depth of 14 inches. Depth to bedrock is less <br />than 2U inches. The series is within the loamy-skeletal, mixed family <br />of Lithic Haploborolls. <br />n <br />U <br />Coarse fragments are typically 35 to 6U percent (by volume) and <br />the surface is flagyy. Because of the flaygy surface, the Castner is <br />not recommended for use as lift 1 material. It is suitable but <br />marginal as lift 2 material from the surface to the sandstone or shale <br />contact. The surface of the Castner in places may be too stoney for <br />salvage. <br />B' <br />