Laserfiche WebLink
4-2B <br /> level to steep benches and hillslopes. These soils are loams, <br />• sandy loams, or gravelly loams. <br />4.4.3 Soil Map Unit Descriptions <br />Table 4.4-2S lists the important characteristics of each map <br />unit. Seventeen map units consisting of consociations and <br />complexes are delineated within the proposed permit area. The <br />map unit symbol, name, and composition are listed. Other char- <br />acteristics include slopes and terrain, erosion hazard for bare <br />soil by wind and water, surface runoff, and land use. The table <br />contains all the information usually reported in SCS map unit <br />descriptions. <br />4.4.4 Evaluation of Topsoil Material <br />4.4.4.1 Method of Evaluation <br />The criteria for evaluating soil for use as topsoil are given <br />in Table 4.4-35. The criteria include sodium adsorption ratio <br />• (SAR), salinity recorded by EC, toxic materials, soil reaction <br />(pH), available water-holding capacity, water erodibility fac- <br />tor (K), wind erodibility group, texture, and coarse fragments. <br />4.4.4.2 Soil Chemical and Physical Properties <br />Chemical and physical data for 21 pedons are reported in Table <br />4.4-45. The samples with an alphanumeric symbol were tested by <br />F & L Labs. Samples with "Sheridan" followed by a numeric <br />notation were analyzed by Colorado Analytical Consultants. Para- <br />meters reported are particle size (very fine sand, fine to very <br />coarse sand, silt, and clay), textural class, organic matter, <br />saturated paste pH, electrical conductivity (EC), soluble <br />cations -- calcium, sodium, and magnesium -- sodium adsorption <br />ratio (SAR), saturation percentage, and boron. The original <br />data as reported by the laboratories are presented as part of <br />Appendix Es. <br />• <br />