2012-01-06_PERMIT FILE - C1982057 (16)

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Furthermore, each map unit was fully described end the following items were also addressed: • slopes (their length if important and percentages) • • physiography type • erosion hazard from wind • erosion hazard from water • surface runoff All map units were compared with existing NRCS Routt County map units. SCC has maintained a complete and legible field notebook that describes the soil characteristics lin an appropriate method of field notation) for holes that were dug during the field mapping and sampling programs. This product provides additional site-specific information end is valuable for several reasons. It provides survey-area-wide data beyond the standard point- specific sampling data. This information is valuable for soil series range of characteristics report discussion, as well as for more specific topsoil suitability evaluations and subsequent topsoil volume calculations based on percent inclusions, as well as major map unit components. It also provides a written record of field work that can be utilized in any subsequent field review. The soil observations were sequentially numbered in the field book and plotted on the 1:4800 11" = 400') scale topographic base map. Soil Sampling and Profile Description. All soil taxonomic units appearing in the soil survey legend and occurring within the projected disturbance area were described and characterized. Soil sample sites were located primarily within or adjacent to the anticipated disturbance area. Sufficient samples per taxonomic unit were collected to adequately characterize each map unit and to follow or exceed sample intensities recommended by SCC and DMG. Samples were collected in the field and analyzed in the laboratory in accordance with DMG- approved procedures for topsoil analyses as outlined in Table 9-1. The information presented in Table 9-1 is a synthesis of material from the approved scope of work and Peabody Central Laboratory (PCLI and Inter-Mountain Laboratory (IML) standard procedures for topsoil ar~alysis. 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 IA, E, B, and CI were separately described, sampled, and analyzed. In certain instances, portions of paralithic material C~ 10 Revised 9198