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<br />Page 2 <br />April 26, 1995 <br />c. Soil Mapping Unit 33 - Forelle Loam, 3 to 8 percent slopes. <br />This deep well drained soil is on terraces and uplands. It <br />formed in eolian and alluvial material derived dominantly from <br />sedimentary rock. Typically, the surface layer is loam 4 inches <br />thick. The upper 12 inches of the subsoil is a clay loam , and <br />the lower 5 inches is a loam. The substratum to a depth of 60 <br />inches or more is a loam. Runoff is medium and the hazard of <br />water erosion is moderate. <br />d. Soil Mapping Unit 106 - Zoltay clay loam, 3 to 6 percent <br />slopes. This is a deep, well drained soil on fans and terraces, <br />formed in alluvium derived dominantly from sedimentary rock. <br />Typically, the surface layer is a clay loam B inches thick. The <br />upper part of the subsoil is a clay loam 5 inches thick. and the <br />lower 18 inches is a cobbly clay loam. The upper 9 inches of the <br />substratum is a cobbly clay loam, and the lower part to a depth <br />of 60 inches or more is a cobbly loam. Runoff is medium, and the <br />hazard of water erosion is slight to moderate. <br />Sufficient topsoil is present on the site, which should be <br />saved and stockpiled to be used during reclamation. <br />2> VEGETATION - The site is within the Rolling Loam Range Site. <br />This is a shrub-grass dominated plant community. The dominate <br />' ~ species found on the site are big sagebrush, western wheatgrass, <br />needle grass, slender wheatgrass, and bottlebrush squirreltail <br />grass. Other species present include Kentucky bluegrass, low <br />larkspur, death camas snakeweed, phlox, and numerous other minor <br />fortis and annuals. The vegetative ground cover is approximately <br />20 percent. The annual vegetative production is about 800 <br />pounds/acre air dry during favorable years. <br />3) RECLAMATION RECOMMENDATIONS - The following reclamation <br />recommendations should be considered at the time the gravel pit <br />is closed, to insure a more successful revegetation of the site: <br />The site should be contoured and smoothed to slopes no <br />steeper than 3:1 and preferably flatter, where practical. The <br />flatter the slope, the better the opportunity for revegetating <br />the disturbed area. Areas which were compacted during mining <br />should be ripped and tilled. <br />Topsoil which was stockpiled should be spread evenly over <br />the site to a minimum depth of 6 inches. The site should then be <br />tilled and firmed to prepare a suitable seedbed. <br />Seeding of the site should be done in the late fall (October <br />15th or later) prior to the soil freezing. The seed should be <br />drilled with a grass drill having double disk openers and packer <br />wheels. Drilling should be preformed as much as possible on the <br />contour. The planting depth should be approximately 1/2 inch. <br />If the seed is broadcast instead of drilled, then the following <br />recommended rate must be doubled. If broadcasted, the area <br />should be harrowed or dragged after the seed is spread to <br />incorporate the seed into the soil. Mulching the site is <br />