2010-05-25_REVISION - C1981008 (4)

Home Browse Search

8. Soils and Geomorphology —1998 The study area included the Morgan property located within the original 1988 survey and additional areas north of BB Road that were not surveyed in 1998. This survey updated map unit delineations and provided detailed topsoil salvage depths on the Morgan property as well as detailed baseline soil information on properties located north of BB Road. The geology and geomorphology are similar to that located in the original 1988 survey. 9. Methodology Tasks performed to accomplish project objectives included: • review of existing soils information • detailed field mapping of soils • soil sampling and profile description • evaluation of soils for reclamation potential The methodology used during the soil surveys followed standard techniques and procedures of the National Cooperative Soil Survey. In connection with the 1988, 1996, and 1998 studies, samples were collected in the field and analyzed in the laboratory in accordance with CDMG- approved procedures for topsoil analyses as outlined in Table 2.04.9 -1. The information presented in Table 2.04.9 -1 is a synthesis of material from the approved scope -of -work, InterMountain Laboratories (IML's) and Colorado State University Soil Lab standard procedures for soil analysis. Sample site locations were selected to most accurately represent the sampled soil series and to provide for adequate sample site distribution across the projected disturbance areas. Transition zones between map units, road edges, fence rows, or previously disturbed areas were avoided. Representative profiles were selected on the basis of medial characteristics for physical and chemical soil characteristics, parent material, landscape position, and vegetation. The major soil horizons (A, E, B, and C) were separately described, sampled, and analyzed. Portions of paralithic material (Cr), if present, were also (Revised October 09) 2.04.9 -10